Thanks to this video I managed to perform this repair on my JV-80. And learn how to solder which I hadn't done since I was kid. Be careful when fastening the screws to the board. I had to re-solder a few buttons (with board in place) because stress on the board caused the solder joints to fail With new confidence I also managed to repair my Boss DR-660 drum machine. It had broken solder joints under the power input plug. Thank you!
Excellent and well detailed video which allowed me to sucessfully make this repair to my XP-50.I also have studied the capacitor replacement video and purchased parts but that project is not necessary at this time.I am grateful to you for sharing your knowledge and skill to keep these wonderful old synths and processors alive to jam another day:)Top notch info Brad, thank you!
Hey Brad, thanks so much for the step-by-step instructions. It's people like you that make CZcams so great. I thought my old JV-80 had seen its best daysyears ago. Now it works like new...and I only have a few 'spare' screws left over!
Seen a few of your other vids, most excellent work you're doing! I'm happy you included the technical sheet pages in the vids, that clued me to what parts to get from where. For someone with little electronics experience finding the right part number to replace the old one is my biggest challenge. Thank you!
Just did this today- took me 7 hours all up 😅😅 Definitely labeling each pile of screws and photographing each single step is a must! Working perfectly again now. Thanks mate, great tutorial. Much obliged.
This synth is just beautiful and I am super happy that I found this video by accident. Have the button problem on mine and didn’t really use it for years because of that. Thanks a lot!
So I came across a JV-80 in the trash room inside our apartment complex. Excitedly took it home as I now have a new fix-it project. No way would anyone toss these if it’s working. Plugged it in and...no sound. Then an “internal RAM error” message kept on popping up on the display. I couldn’t even get the system into the diagnostics mode. After thinking about the situation, I opened up the cover and found that the battery back up coin cell was dead. Replaced it and powered it back on. Same “internal RAM error”. Decided to try and re-initializing the RAM by holding down the number ‘8’ key while powering up the system. It will ask you if you want to re-initialize the memory, press ‘enter’ button. Memory initialized, rebooted the system, and YAY! Sound! I then decided to run the diagnostics mode to check CPU/RAM/ROM, bender PCB, audio PCBs, check parametric slider encoding, buttons...etc etc etc. You can enter the diagnostic mode by holding down the ‘1’ + ‘8’ + ‘write’ keys while powering up. You can switch back and fourth the diagnostics modes using arrow keys. Anyhoo, got to the switch check mode where it lights up all the LEDs. Press the button to make the LEDs go out. Found 18 bad switches. Came across this video and now, imma buy some switches from digikey! Thanks for this!
Thank you; I followed your instructions and changed all 64 switches on my JV-80, ordered from the same supplier you reccomended. The synth now works beautifully. Thank you for a great video: you are the best :-)
Thanks for inspiring me to do the inevitable. I was given this JV-80 as the glue that holds the weights under the keys had broken down and was everywhere. Luckily, at the time, Roland was stepping up and replacing the entire key assembly for the install cost (they would not send me the replacement as I am not an authorized service center - just a DIY'er). So, for a hundred bucks, I could not pass it up. The only problem was the switches started acting up. I found your excellent video and decided to overhaul the switches. I checked the switches through Digi-Key and the part number provided is now "obsolete". The recommended replacement is Digital-Key P/N: FSM4JRT-SI-ND (SWITCH TACTILE SPST-NO 0.05A -24V). Same dimensions as the obsolete switch and everything now works as it should. Note: After assembly there was no output from any of the patches though the demo songs worked fine. Did a factory reset (power on with No.8/16 switch depressed then "Enter" then" Write") and everything works. Great video and thanks again!
Great video, thanks for sharing this! I just bought a JV-80 for a cheap price due to the fact that most of the buttons are not working. To my surprise, it included the vintage synth expansion as well as a 32k RAM card, each justifying the price I paid for the synth. Now the switches have been ordered, and I will follow your instructions to get it fixed.
Thank a lot for sharing this. You are very patient and good with electronics. I am having the same problem with the D20. Very helpful. Much appreciated.
Beautiful job!!! i have the same prob on my JV-90 and took the back off a few years ago to repair ("i mean, how difficult could this be???") and very quickly decided i'd rather have a few uncooperative keys than a boat anchor! Thanks for the 1st class video!
Fantastic video - same problem on my JV90. Disappointed how much of a pain it'll be to take it apart, but really nice to know what to expect should I go through with it. Thanks for the video!
Great video. I have a Roland D5 with the same switches and exactly the same switch failure mode. I opened one of the switches and it has the same stains/wear.
Maybe late and something totally different, but I am busy repairing a JV-80 as well. But before order, I had to open it up to see what the damage in total was. There was also a faulty key, which I tought it was only the matter of ordering a new keyspring. But it turned out the key was snapped off. So, hence why I had to open it up. I also have a few buttons faulty, some of them turned faulty in a few days time I got the synth. So I have to replace them. Thanks to your video I know what I am up too, and already ordered a few buttons. I am not going to replace all, yet.However I've encountered another issue AFTER I opened it up. It could be coincedence, or something I did, But after turning on the JV, after 10 seconds or so, the keys get stuck in a sustainmode. ( without a pedal connected to it) With panic mode, or switching from patch to performance mode the sustain is gone and the synth works fine. But everytime after I turn the power in, after 10 seconds, no matter what patch or setting, it gets stuck in sustain. Already tried factory settings but no avail. I have absolutely no clue what is causing it. Do you, or anyone else have a clue!?
I have the XP-30 and have had the same problem for well over a decade and even the encoder knob was all over the place when browsing patches, I always thought it was dust and dirt that got in there because it works intermittently, one time I opened it up and saw how complicated it looked and decided to put it back together before I killed it.
Opening that synth is madness, removing all the boards to get to the buttons... I did it once to replace some switches and when another switch started to fail, I sold it.
Thanks Brad for sharing this information. I need to do this for two of my Roland D-50 Linear Synthesizers, and they use the 4 pins. I'm hoping I can still order these. I have no idea what the part number is for these replacement switches.
hi very nice video..i have a Roland prelude..the Munu button just go inside and cannot work with button.its just a hole instead of menu button on roland prelude...is it possible to be fixed?
it is cool to experience things that I didn't know now I know how to clean my piano hopefully I can learn and somebody can learn from my experiences I'm trying to play and I'm trying not to be embarrassed I'm trying to acknowledge who cares what anybody thinks or say if they like it they like it if not it's okay cuz I can't stop being who I am just because of someone else God bless everyone and keep my kids and family safe and everyone else's keep up the good work everybody
Brad, can you give me a heads up on materials I need for this repair on my MC303? I have all the parts from digikey... but what sort of soldering iron would you recommend / solder brand...?
Hi, I have a Boss Br900cd. Some of the tactile switches don't work at all. I've replaced them and still no luck. And one that I replaced that was working doesn't work. The switches are the correct switches needed. Any suggestions to what might be going wrong would be much appreciated.
Hi, I have the same problem, plus glue melting under the keys :(. Checking digikey now, that switch models alerts "this part is in the End Of Life status". Do you know if there's some other newer model to replace the old 21505R? Or should I buy all the stock?? (As Elaine on 'The Sponge' Seinfeld's episode ;-P). Thanks for your video!!
Would you know if power runs thru those two pin tactile switcthes (mine are small round ones) in the off relaxed position something tells me no . I have a Yamaha P-125 and one tactile switch doesnt show continuity and is broke internally. My piano on /off light comes on only when I hold it and wont powerup. Any help would be appreciated. I did order a new PNL board for my unit($11.00)... Great Video!..regards Glenn
A good video helped me with the repair I was looking for, now I'm consulting and it turns out that I have the same problem. Roland jv-80. The fault is that none of the red lights turn on to make contact. What can be the fault? ? Thank you... Un buen video me ayudó en la reparación que estaba buscando, ahora hago una consulta y resulta que tengo el mismo problema. Roland jv-80. La falla es que ninguna de las luces rojas se enciende para hacer contacto. ¿Cuál puede ser la falla? ? Gracias...
I bought a 1988-89 Roland D-20 Linear multi-timbral multi-track sequencer with floppy disc for a $100 (digital dinosaur) kind of a music work station before they were called that ! Anyway had the same problem with some of the buttons (tact switches) so I bought a pack of 37 for around $30 watched a video and became a soldering expert and replaced all 37 (4 pin) then I bought a four disc floppy set of 64 presets per disc and a multi timbral section for $25 so for $155 I have a very clean perfectly working D-20 with extra presets and it sounds great....... for what it is..........I think I got a good deal !
Hi, I love the video and would also like to repair my JV80 and clean the red glue thing under the keys, hope you can help me. The switches you are using are out of stock and will not be replaced since panasonic will not produce them again. I have no idea how to find an alternative. Can you please help me?
The switches on my JV-1000 - which is actually an advanced JV-80 with built in sequencer and disk drive - kept breaking time after time when it was still new and under warranty. Also the plastic buttons broke out of their holding frames, probably due to bad engineering - too much space between the housing and pcb, resulting in too much travel, which Roland of course denied; I was pressing the buttons too firmly. In the end Roland was so fed up with the repairs that they gave me a bag full of switches and buttons. After a while I too was done with the replacement of the buttons, mainly those of the built in MC-50 MKII sequencer, so I replaced them with PB86 switches which last till today.
The Keyed JV series does not get as much love as they should since the XP were so popular, but there still totally usable today especially if you’re covering 90’s stuff, entire records were made on JV-1080’s, it’s got that sound.
I have an ep9. I dont have as many switches as you do but all mine are not working although they are all getting 5v. Could it be a coincidence they are all not working?
Did you notice any difference in force required to operate the red switches compared to the black switches as the colour normally denotes the force required to operate. I made some IO boards for a project and ended up buying a couple of each colour/force to determine the best action. I have a Juno 106 and a couple of DW8000 I need to replace the tactile switches on and have wondered whether they'd benefit from a firmer switch action, which would last longer? Enjoyed the video.
Korg uses tactile switches as well. i own a pa800 , and i have replaced till now 6 of these switches on my instrument.It appears that these switches go faulty due to humidity and age. I once disassembled a faulty switch to view any sign on damage , However , same as in your case everything seemed normal inside. This is really a weird piece of hardware.
Great job! I would also suggest downloading a service manual in which are several handy schematics. The JV-80 TEST MODE has a button test: power on while pressing WRITE, 1 and 8. Now press 4.
I have a Roland JV 90 that has the same issue, with the switch is not working, but it also has another issue. When you turn the volume low on the slider, the audio comes out of the right channel. When you turn the volume slider up, the audio comes out of the left channel. I have since just kept the synthesizer in storage and was able to acquire at a fair price secondhand both a Korg N1 and a Roland JV 1080. My question is, what it be worth trying to figure out how to fix the unit, or just try to sell it as is? And if I go the selling route, what would be the best avenue to go about selling it?
tengo un xp50 y no prende creo que es la fuente de poder ¿pueden hacer un video de como repararlo es desde venezuela que no existe servicio tecnico roland..gracias
thanks for sharing my jv 80 has same buttons problem but also some kind of glue is coming of its keys which is worse because don`t know if i`ll be able to fix that anyway i learned a lot from your video thanks!
This synth is notorious for the semi-weighted keys glue deteriorating over time leaving a huge mess under the keys. This typically happens when the synth is exposed to more humid and hot climates. Easiest solution for this is to remove every key, clean up what red glue you can, then and add some silicone caulk to the undersides of each key locking in the metal weight and what is left of the nasty red glue.
Hello. How can i get in contact with you? I have a Korg aM50 that have some problems and i m out of ideas about how to repair it. Maybe you can help me please. Thank you.
About the buttons , it's something really odd . I almso experience it on my integra , they still work good , but when you verry slightly adjust pressure and feel the clicky sound ..you can make it so that the values are not altered . Maybe it's because they are 2 legged switches , . Seem to be the same 2 legged push as used in jv series and xv series and probbly the integra syntaur.com/roland_xv.html Funny really , cheap consumer electronics like my 20 year old nokia still works flawlesly , and it must have had a a gazillion button presses
09:03 Noppes , the rack models of the xp series are NOT the xv's , it's the jv series .1080/2080 jv1080 = xp50 jv2080 = xp 80 The xv series rackmount modules ( xv 3080 and 5080 ), had only 1 keyboard equivalent ..the xv 88 which is basically an xv 3080
My first synth, amazing and that one looks brand new. The buttons are a nightmare and the sliders do not send CC via midi... what a scam. But still a great synth.
Hi I'm from Maryland. I've a Roland D-70 Keyboard, some keys are lose, not working. Power turn on and but stacked. like some lights are one and not functioning properly. I'm a student, can't effort too much cost for repair. Can you please fix it. if I can ship to you can you please fix it. I can pay, but not too much...
here is a quick fix!!! Get a cheap hand massager , put it at the maximum setting and go through every button for 1-2 minutes. all of the dirt caked in will instantly break. thank me later!!
Thanks to this video I managed to perform this repair on my JV-80. And learn how to solder which I hadn't done since I was kid.
Be careful when fastening the screws to the board. I had to re-solder a few buttons (with board in place) because stress on the board caused the solder joints to fail
With new confidence I also managed to repair my Boss DR-660 drum machine. It had broken solder joints under the power input plug.
Thank you!
Excellent and well detailed video which allowed me to sucessfully make this repair to my XP-50.I also have studied the capacitor replacement video and purchased parts but that project is not necessary at this time.I am grateful to you for sharing your knowledge and skill to keep these wonderful old synths and processors alive to jam another day:)Top notch info Brad, thank you!
Hey Brad, thanks so much for the step-by-step instructions. It's people like you that make CZcams so great. I thought my old JV-80 had seen its best daysyears ago. Now it works like new...and I only have a few 'spare' screws left over!
Seen a few of your other vids, most excellent work you're doing! I'm happy you included the technical sheet pages in the vids, that clued me to what parts to get from where. For someone with little electronics experience finding the right part number to replace the old one is my biggest challenge. Thank you!
Just did this today- took me 7 hours all up 😅😅
Definitely labeling each pile of screws and photographing each single step is a must!
Working perfectly again now.
Thanks mate, great tutorial. Much obliged.
Glad to hear it was helpful, thanks for watching!
This synth is just beautiful and I am super happy that I found this video by accident. Have the button problem on mine and didn’t really use it for years because of that. Thanks a lot!
So I came across a JV-80 in the trash room inside our apartment complex. Excitedly took it home as I now have a new fix-it project. No way would anyone toss these if it’s working. Plugged it in and...no sound. Then an “internal RAM error” message kept on popping up on the display. I couldn’t even get the system into the diagnostics mode. After thinking about the situation, I opened up the cover and found that the battery back up coin cell was dead. Replaced it and powered it back on. Same “internal RAM error”. Decided to try and re-initializing the RAM by holding down the number ‘8’ key while powering up the system. It will ask you if you want to re-initialize the memory, press ‘enter’ button. Memory initialized, rebooted the system, and YAY! Sound!
I then decided to run the diagnostics mode to check CPU/RAM/ROM, bender PCB, audio PCBs, check parametric slider encoding, buttons...etc etc etc. You can enter the diagnostic mode by holding down the ‘1’ + ‘8’ + ‘write’ keys while powering up. You can switch back and fourth the diagnostics modes using arrow keys.
Anyhoo, got to the switch check mode where it lights up all the LEDs. Press the button to make the LEDs go out. Found 18 bad switches. Came across this video and now, imma buy some switches from digikey! Thanks for this!
Thank you; I followed your instructions and changed all 64 switches on my JV-80, ordered from the same supplier you reccomended. The synth now works beautifully. Thank you for a great video: you are the best :-)
Thanks for inspiring me to do the inevitable. I was given this JV-80 as the glue that holds the weights under the keys had broken down and was everywhere. Luckily, at the time, Roland was stepping up and replacing the entire key assembly for the install cost (they would not send me the replacement as I am not an authorized service center - just a DIY'er). So, for a hundred bucks, I could not pass it up. The only problem was the switches started acting up. I found your excellent video and decided to overhaul the switches. I checked the switches through Digi-Key and the part number provided is now "obsolete". The recommended replacement is Digital-Key P/N: FSM4JRT-SI-ND (SWITCH TACTILE SPST-NO 0.05A -24V). Same dimensions as the obsolete switch and everything now works as it should. Note: After assembly there was no output from any of the patches though the demo songs worked fine. Did a factory reset (power on with No.8/16 switch depressed then "Enter" then" Write") and everything works. Great video and thanks again!
Great video, thanks for sharing this! I just bought a JV-80 for a cheap price due to the fact that most of the buttons are not working. To my surprise, it included the vintage synth expansion as well as a 32k RAM card, each justifying the price I paid for the synth. Now the switches have been ordered, and I will follow your instructions to get it fixed.
My xp30 have this issue now. My previous XP60 had it too. Dude im saving your video on my playlist cuz this is very helpful info. Thank you so much
Nice work. That's a big job ! I'm just now finishing up a JV-1000, which has roughly twice the buttons plus some with the LEDs in them.
Thank a lot for sharing this. You are very patient and good with electronics. I am having the same problem with the D20. Very helpful. Much appreciated.
Beautiful job!!! i have the same prob on my JV-90 and took the back
off a few years ago to repair ("i mean, how difficult could this be???")
and very quickly decided i'd rather have a few uncooperative keys
than a boat anchor!
Thanks for the 1st class video!
Fantastic video - same problem on my JV90. Disappointed how much of a pain it'll be to take it apart, but really nice to know what to expect should I go through with it. Thanks for the video!
This video is also good and helpful for other push button replacement works. Thanks man.
I have a JV90 and had a D5. The switches had been are an issue in both. I will try to fix it. Thanks for recording the repairing process.
Great video, love the technical details.
Thank you.
Pro tech work all the way , Great job !!!
Great video. I have a Roland D5 with the same switches and exactly the same switch failure mode. I opened one of the switches and it has the same stains/wear.
Thanks for sharing. I have an old JV-80 which I am the original owner and have this problem too. Will be doing this soon.
excelente trabajo!
Thanks so much, friend. Really appreciate your work.
Glad to hear, thanks for watching!
great video
Maybe late and something totally different, but I am busy repairing a JV-80 as well. But before order, I had to open it up to see what the damage in total was.
There was also a faulty key, which I tought it was only the matter of ordering a new keyspring. But it turned out the key was snapped off. So, hence why I had to open it up.
I also have a few buttons faulty, some of them turned faulty in a few days time I got the synth. So I have to replace them. Thanks to your video I know what I am up too, and already ordered a few buttons. I am not going to replace all, yet.However I've encountered another issue AFTER I opened it up. It could be coincedence, or something I did,
But after turning on the JV, after 10 seconds or so, the keys get stuck in a sustainmode. ( without a pedal connected to it) With panic mode, or switching from patch to performance mode the sustain is gone and the synth works fine. But everytime after I turn the power in, after 10 seconds, no matter what patch or setting, it gets stuck in sustain. Already tried factory settings but no avail.
I have absolutely no clue what is causing it. Do you, or anyone else have a clue!?
Thanks for this video 👍
I have the XP-30 and have had the same problem for well over a decade and even the encoder knob was all over the place when browsing patches, I always thought it was dust and dirt that got in there because it works intermittently, one time I opened it up and saw how complicated it looked and decided to put it back together before I killed it.
Ah cool thanks, this is very useful. I have JV-90 and my buttons need replacement too.
Opening that synth is madness, removing all the boards to get to the buttons... I did it once to replace some switches and when another switch started to fail, I sold it.
Thanks for the video! I think LEDs can be also replaced with any color to customize synth. Would you advise part numbers for LED?
Thanks Brad for sharing this information. I need to do this for two of my Roland D-50 Linear Synthesizers, and they use the 4 pins. I'm hoping I can still order these. I have no idea what the part number is for these replacement switches.
awesome vdo my JV-30 uses these too I hope- I just ordered mine from Digitkey too....
hi very nice video..i have a Roland prelude..the Munu button just go inside and cannot work with button.its just a hole instead of menu button on roland prelude...is it possible to be fixed?
Muuuuy bien!
it is cool to experience things that I didn't know now I know how to clean my piano hopefully I can learn and somebody can learn from my experiences I'm trying to play and I'm trying not to be embarrassed I'm trying to acknowledge who cares what anybody thinks or say if they like it they like it if not it's okay cuz I can't stop being who I am just because of someone else God bless everyone and keep my kids and family safe and everyone else's keep up the good work everybody
Thank you
Hi do these button caps found in Jv 80 (not the tact sw but the button cap) also can replace a few buttons on my Roland D 70 ?
Brad, can you give me a heads up on materials I need for this repair on my MC303? I have all the parts from digikey... but what sort of soldering iron would you recommend / solder brand...?
very good . thank
Hi, I have a Boss Br900cd. Some of the tactile switches don't work at all. I've replaced them and still no luck. And one that I replaced that was working doesn't work. The switches are the correct switches needed. Any suggestions to what might be going wrong would be much appreciated.
Hi, I have the same problem, plus glue melting under the keys :(.
Checking digikey now, that switch models alerts "this part is in the End Of Life status". Do you know if there's some other newer model to replace the old 21505R? Or should I buy all the stock?? (As Elaine on 'The Sponge' Seinfeld's episode ;-P). Thanks for your video!!
Will this be the same for the juno d? Most of my buttons are not working anymore, Thanks!
merci
Would you know if power runs thru those two pin tactile switcthes (mine are small round ones) in the off relaxed position something tells me no . I have a Yamaha P-125 and one tactile switch doesnt show continuity and is broke internally. My piano on /off light comes on only when I hold it and wont powerup. Any help would be appreciated. I did order a new PNL board for my unit($11.00)... Great Video!..regards Glenn
A good video helped me with the repair I was looking for, now I'm consulting and it turns out that I have the same problem. Roland jv-80. The fault is that none of the red lights turn on to make contact. What can be the fault? ? Thank you...
Un buen video me ayudó en la reparación que estaba buscando, ahora hago una consulta y resulta que tengo el mismo problema. Roland jv-80. La falla es que ninguna de las luces rojas se enciende para hacer contacto. ¿Cuál puede ser la falla? ? Gracias...
I bought a 1988-89 Roland D-20 Linear multi-timbral multi-track sequencer with floppy disc for a $100 (digital dinosaur) kind of a music work station before they were called that ! Anyway had the same problem with some of the buttons (tact switches) so I bought a pack of 37 for around $30 watched a video and became a soldering expert and replaced all 37 (4 pin) then I bought a four disc floppy set of 64 presets per disc and a multi timbral section for $25 so for $155 I have a very clean perfectly working D-20 with extra presets and it sounds great....... for what it is..........I think I got a good deal !
Hi, I love the video and would also like to repair my JV80 and clean the red glue thing under the keys, hope you can help me. The switches you are using are out of stock and will not be replaced since panasonic will not produce them again. I have no idea how to find an alternative. Can you please help me?
The switches on my JV-1000 - which is actually an advanced JV-80 with built in sequencer and disk drive - kept breaking time after time when it was still new and under warranty. Also the plastic buttons broke out of their holding frames, probably due to bad engineering - too much space between the housing and pcb, resulting in too much travel, which Roland of course denied; I was pressing the buttons too firmly. In the end Roland was so fed up with the repairs that they gave me a bag full of switches and buttons.
After a while I too was done with the replacement of the buttons, mainly those of the built in MC-50 MKII sequencer, so I replaced them with PB86 switches which last till today.
hellow i gat a jv90 bud sound low, can you tellme what is the problem ??
how long would it take to just replace 1 button including dissasembly and assembly ? good job
This buttons may be aplicable for XPS30 synth?
The Keyed JV series does not get as much love as they should since the XP were so popular, but there still totally usable today especially if you’re covering 90’s stuff, entire records were made on JV-1080’s, it’s got that sound.
Hi Bradthx - You have inspired me to fix my JV-80, but the switches you mention are discontinued. Do you have a replacement you can recommend?
Do you repair for others? If so, what region?
I have an ep9. I dont have as many switches as you do but all mine are not working although they are all getting 5v. Could it be a coincidence they are all not working?
sir please help my Roland keyboard jv 80 si a enter, write, rhythm, release,8,8 no.,button not work please solutions sir..........
The silkscreen markings on the power conversion board read +12V, -12V next to the connectors :D
Hi, I have xp 60 & there only enter, shift ,0, 1, 2, 3 buttons are not working please can you give the solution for this,
Thanks
What is the parts # for the switches? I've been looking everywhere! Great video and look inside! :)
Did you notice any difference in force required to operate the red switches compared to the black switches as the colour normally denotes the force required to operate. I made some IO boards for a project and ended up buying a couple of each colour/force to determine the best action. I have a Juno 106 and a couple of DW8000 I need to replace the tactile switches on and have wondered whether they'd benefit from a firmer switch action, which would last longer? Enjoyed the video.
They felt the exact same to me, only very light touch is needed like the originals. Thanks for watching.
Korg uses tactile switches as well. i own a pa800 , and i have replaced till now 6 of these switches on my instrument.It appears that these switches go faulty due to humidity and age. I once disassembled a faulty switch to view any sign on damage , However , same as in your case everything seemed normal inside. This is really a weird piece of hardware.
Great job! I would also suggest downloading a service manual in which are several handy schematics. The JV-80 TEST MODE has a button test: power on while pressing WRITE, 1 and 8. Now press 4.
I have a Roland JV 90 that has the same issue, with the switch is not working, but it also has another issue. When you turn the volume low on the slider, the audio comes out of the right channel. When you turn the volume slider up, the audio comes out of the left channel. I have since just kept the synthesizer in storage and was able to acquire at a fair price secondhand both a Korg N1 and a Roland JV 1080. My question is, what it be worth trying to figure out how to fix the unit, or just try to sell it as is? And if I go the selling route, what would be the best avenue to go about selling it?
Replace that fader- hopefully that solves it!
Just repaired all switch on a JV-90. If a few are bad replace them all. Dust gets in to the switches. I have tried to clean them but does not work.
tengo un xp50 y no prende creo que es la fuente de poder ¿pueden hacer un video de como repararlo es desde venezuela que no existe servicio tecnico roland..gracias
thanks for sharing my jv 80 has same buttons problem but also some kind of glue is coming of its keys which is worse because don`t know if i`ll be able to fix that anyway i learned a lot from your video thanks!
This synth is notorious for the semi-weighted keys glue deteriorating over time leaving a huge mess under the keys. This typically happens when the synth is exposed to more humid and hot climates. Easiest solution for this is to remove every key, clean up what red glue you can, then and add some silicone caulk to the undersides of each key locking in the metal weight and what is left of the nasty red glue.
Hello. How can i get in contact with you? I have a Korg aM50 that have some problems and i m out of ideas about how to repair it. Maybe you can help me please. Thank you.
If Roland doesn't have a 2-prong power cable, Hosa makes the PWC-178 cable that will work.
I wish music keyboards have PC keyboard type (at least F1 -F12 keys style) buttons. They are far better and will not malfunction so easily.
excelente se pudiese subtitular en español.
My XP30 still works fine.
About the buttons , it's something really odd .
I almso experience it on my integra , they still work good , but when you verry slightly adjust pressure and feel the clicky sound ..you can make it so that the values are not altered .
Maybe it's because they are 2 legged switches , .
Seem to be the same 2 legged push as used in jv series and xv series and probbly the integra
syntaur.com/roland_xv.html
Funny really , cheap consumer electronics like my 20 year old nokia still works flawlesly , and it must have had a a gazillion button presses
09:03
Noppes , the rack models of the xp series are NOT the xv's , it's the jv series .1080/2080
jv1080 = xp50
jv2080 = xp 80
The xv series rackmount modules ( xv 3080 and 5080 ), had only 1 keyboard equivalent ..the xv 88 which is basically an xv 3080
You are correct. The JV-880 was also the rack version of the JV-80. Couldn't remember the model at the time.
No prob man :)
Correction - the time code on this video is 08:51.
My first synth, amazing and that one looks brand new. The buttons are a nightmare and the sliders do not send CC via midi... what a scam. But still a great synth.
Hi I'm from Maryland. I've a Roland D-70 Keyboard, some keys are lose, not working. Power turn on and but stacked. like some lights are one and not functioning properly. I'm a student, can't effort too much cost for repair. Can you please fix it. if I can ship to you can you please fix it. I can pay, but not too much...
Dang. I can't find a company in Germany that provides these switches. :(
จะแกะซ่อมปุ่มครับ กดไม่ไป
or you can load them up with contact cleaner. TU
I'm thinking of drowning mine in contact cleaner spray because I can't be bothered doing all this.
Did you try the contact cleaner? I'm thinking of trying that first before replacing them.
here is a quick fix!!! Get a cheap hand massager , put it at the maximum setting and go through every button for 1-2 minutes. all of the dirt caked in will instantly break. thank me later!!
Thank you!!! This worked!!!