In this video we take a look at a know problem with the 101ZD VFO Support us on Patreon: / theradioshop Contact information: gokarters.com/smf/index.php?to... Discuss on site: gokarters.com/smf/index.php?to...
Another fine video i like the attention you pay to circuit board repair fine lesson for those getting into both beginner restoration and let us not forget the professionals as well Buddy all round a nice video .
thank you for a brilliant video on the repair of the 101zd, I have two of these classics and had the very problem that this video concerns I did the repair as you did, and cured my fault too! still running my mk3 101zd today at least these are work on able! thanks again M0TJP Devon...
Solder joints sometimes go bad but not your videos Buddy. Another excellent one added to the list . Thanks for the time and effort you give providing all these great videos .
Another amazing example of your Wizardry, Buddy. After watching a number of your videos it has become apparent that it is very important to do a lot of observing before opening up the radios. Observing the symptoms and understanding how the different circuit modules work and interact together gives you a lot of significant information about where to start looking for the cause of the problems in the radio. Excellent video Buddy. Thank you for sharing it with us. 73 DE K7RMJ Frank
Frank, Looks like you perfectly understand my thinking and game plan. Observations of the symptoms are very important. Will save lots of time troubleshooting. This is why I always say find out what works instead of looking for what does not work. Gives you a personal relationship with the unit you are working on. Thanks for the kind words my friend.
An other great video Buddy, I will be taking my TS-830's VFO out and inspect the solder joints as it does jump frequency to and drifts a little. Thanks for all the best tips.
Hello and thank you for this video and tip. Just picked up same vintage MK0 and brought it up on a variac. The MOX clicks in/out too. So will do your trick. Looking forward for more of these tip bits of info to help me keep this one going.
I have a small drift problem on mine (even when the radio is well warmed up)... need to check it out but this is very useful as it may be in the same area... great video as always... thanks
Great job Buddy, I had one of those once upon a time ago and it had a similar problem, turned out to be a bad crystal lead solder joint. That one was a pain to trace without the proper test equipment. Well done Buddy!!
I'm just learning that. But I guess to keep it in perspective, it is a 1970s radio. By contrast, my wonderful '71 Buick convertible gave up the ghost years ago. ;)
Great job , and very helpful to me. Today I have the same story of freq jumps on my 101ZD. I' ve started by checking voltage, cleaning the VFO switches, with no result. Then the RIT board off, cleaning switches, relay and re-soldering board. It has been stable for two hours. If the problem continues, I know the way to access to the VFO innards. Thank you very much.
Thanks for watching. Hope you hit the problem. Thought I did at first on this one but it later started drifting around again. That is when I found the bad solder joints. Good luck with yours.
Hello, Buddy. I had one of those rigs quite a while back. Also, the 101b, 101e, and the 101ee. All I have now is the amp, the FL-2100B, and haven't used it in a very long time. Thanks for the video, and 73...Dan w4mnc
I just discovered your channel this morning, thank you for the great education. I’ve got a nice ZD that I really enjoy. Do you know where I might be able to find replacement lamps for that radio?
hi i am from Denmark and i also have a yaesu ft 101zd where i can only get audio out of it in jack jacket but is low plus can not send it comes only ckik but not effect out of the 73 and super job to you
Hi. I have one of these 101zd but the large relay down below the bfo clicks on/off like a machine gun, checked more or less everything even change all the boards except for the two rectifier boards, only happens when I key the mike, also the frequency changes, from normal to some real high number, receive ok but no transmit. maybe you have some ideas on what could course the relay to do this. Great video btw. Thanks.
Have you ever wondered if they design solder joint failures to happen on the hardest to get to boards. In radios like this it's never the board where you can just pop off the cover and go, A HA, there it is and fix it. It's always the board that's one of the most difficult to get to.
I agree Dino. Looks like perhaps the VFO boards were wave soldered. Most likely some contaminates on the leads prevented the solder from adhering to the circuit board. As Mike would say, flux flux flux.
Wow have a problem like that on a FT-902DM that drifted and that the display frequency was off from the actual frequency. I will look in the VFO unit to and the 6 volt power supply. Thanks Buddy for another great video
I what u found wrong in the mox why it was clicking on & off was it a component failure especially a cap pulling relay to ground ground would be interested Buddy otherwise an excellent video.
had same issue on readout. so i seen video and opened the vfo. same issues on board also... but still didnt fix the numbers issue on display for 30m for the zd mk3 i have. grrrr.... more hunting down something i havent a clue to look for lol
havent got that far. still learning... tho 30m went hay wire again. all other bands work find. no manual for the 101zd mk3 made. seems they stoped at mk2 lol
I also have a 901D with VFO that has a little backlash and feels lumpy to turn. Have taken out before but it was tricky. I can live with this but the bigger annoyance is this model tunes the opposite direction to every other radio I have ie counter clockwise to move up in frequency. If I could convert this to regular clockwise it would make operation simpler.
I found this Video very interesting I have just bought an ft-101zd mine has an rx fault I haven't tried it yet as I'm waiting for a copy of the service manual, I enjoyed looking at your video, de Barry G4DIP.
Love all your videos. keep them coming!
Thank you mike. Appreciate the comment.
Always a great video.
Love the show....and I really like my 101 ZD
Another fine video i like the attention you pay to circuit board repair fine lesson for those getting into both beginner restoration and let us not forget the professionals as well Buddy all round a nice video .
thank you for a brilliant video on the repair of the 101zd, I have two of these classics and had the very problem that this video concerns
I did the repair as you did, and cured my fault too! still running my mk3 101zd today at least these are work on able! thanks again
M0TJP
Devon...
Nice rig. I have the one with am/fm.
Love the audio on sideband.
It stands on the shelf, being a treasure of the good old times.
Old rigs are so fun. Great audio. Thanks for stopping in.
Solder joints sometimes go bad but not your videos Buddy. Another excellent one added to the list . Thanks for the time and effort you give providing all these great videos .
Thanks for the nice comment Todd and for taking time to watch.
Another amazing example of your Wizardry, Buddy. After watching a number of your videos it has become apparent that it is very important to do a lot of observing before opening up the radios. Observing the symptoms and understanding how the different circuit modules work and interact together gives you a lot of significant information about where to start looking for the cause of the problems in the radio. Excellent video Buddy. Thank you for sharing it with us. 73 DE K7RMJ Frank
Frank, Looks like you perfectly understand my thinking and game plan. Observations of the symptoms are very important. Will save lots of time troubleshooting. This is why I always say find out what works instead of looking for what does not work. Gives you a personal relationship with the unit you are working on. Thanks for the kind words my friend.
Great video, learned a lot, many thanks EI9GT
Another great video Buddy thanks
another old goodie saved from the scrap heap nice work buddy
Appreciate it Donald. Got to keep these running.
An other great video Buddy, I will be taking my TS-830's VFO out and inspect the solder joints as it does jump frequency to and drifts a little. Thanks for all the best tips.
Good deal Lyle. While you are in there look those caps on the board also. There is an upgrade for those somewhere on the web to limit drift.
Hello and thank you for this video and tip. Just picked up same vintage MK0 and brought it up on a variac. The MOX clicks in/out too. So will do your trick.
Looking forward for more of these tip bits of info to help me keep this one going.
Thanks. Hope it turns out ok for you.
Another good tip that I will store away for future use. Thanks Buddy. 73 Doug.
Thanks Doug.
I have a small drift problem on mine (even when the radio is well warmed up)... need to check it out but this is very useful as it may be in the same area... great video as always... thanks
Thanks David. Voltages may be out a bit.
Great job Buddy, I had one of those once upon a time ago and it had a similar problem, turned out to be a bad crystal lead solder joint. That one was a pain to trace without the proper test equipment. Well done Buddy!!
Appreciate that Chuck. yes a bad connection on a crystal will cause this same problem.
Very nice analysis and fix buddy thanks for sharing...
Thanks for watching
Thank you for sharing . Good work.
Nice one buddy big thumbs up . look like your getting through them radios
Thanks allan. Two more came in today lol...
I've got a TRIO-Kenwood TS-120V with the same problem, but it will receive and transmit. Great video.
Lots of bad solder joints in those rigs.
I'm just learning that. But I guess to keep it in perspective, it is a 1970s radio. By contrast, my wonderful '71 Buick convertible gave up the ghost years ago. ;)
Excelente muchas gracias por compartir , un abrazo desde Lima Peru OA4 DWG
Gracias
Thanks for sharing--I just bought one of those radios.
Thanks for wacthing Rick
Great job , and very helpful to me. Today I have the same story of freq jumps on my 101ZD. I' ve started by checking voltage, cleaning the VFO switches, with no result. Then the RIT board off, cleaning switches, relay and re-soldering board. It has been stable for two hours.
If the problem continues, I know the way to access to the VFO innards. Thank you very much.
Thanks for watching. Hope you hit the problem. Thought I did at first on this one but it later started drifting around again. That is when I found the bad solder joints. Good luck with yours.
Another good job but you always seem to do a good job so I enjoy watching K1emw
I appreciate that
Hello, Buddy. I had one of those rigs quite a while back. Also, the 101b, 101e, and the 101ee. All I have now is the amp, the FL-2100B, and haven't used it in a very long time. Thanks for the video, and 73...Dan w4mnc
Thanks for sharing Dan. Great old rigs and fun also.
Great repair buddy :)
Thanks Grant.
Nice job on the USB hand cam. I just wish you were working on my remote Kenwood VFO! Another amazing job
Where are you located Rico? You could possibly send it in and let me have a go at it. Should not be difficult
I live in Marblefalls Texas. And I would love to get it fixed. It's a Kenwood remote VFO-230. Hw do we do Business?
Got your mail. Will reply soon.
How did it turn out?
I just discovered your channel this morning, thank you for the great education. I’ve got a nice ZD that I really enjoy. Do you know where I might be able to find replacement lamps for that radio?
Love to see more FT-101ZD vids if you can fit any in Buddy...your work is fantastic...were you were over here in the UK.
Nick.
hi i am from Denmark and i also have a yaesu ft 101zd where i can only get audio out of it in jack jacket but is low plus can not send it comes only ckik but not effect out of the 73 and super job to you
It is the poorly soldered through hole connections that drive me mad... Good find!
I agree!
Hi. I have one of these 101zd but the large relay down below the bfo clicks on/off like a machine gun, checked more or less everything even change all the boards except for the two rectifier boards, only happens when I key the mike, also the frequency changes, from normal to some real high number, receive ok but no transmit. maybe you have some ideas on what could course the relay to do this. Great video btw. Thanks.
Beware high voltage charges on the smoothing caps !!! They stay leathal high voltage hours after power off.
Have you ever wondered if they design solder joint failures to happen on the hardest to get to boards. In radios like this it's never the board where you can just pop off the cover and go, A HA, there it is and fix it. It's always the board that's one of the most difficult to get to.
I'm trying to figure out how that one fillet failed with that blob on top...'course the most important thing is that it's fixed, great job Buddy!
Hi Mike,
Amen to that. :-)
Still watching the other videos you uploaded today. Almost done. 73 WB3BJU
Murphys law prevails LOL
Funny how it always seems to work that way. Never a simple to get through thing lol.
I agree Dino. Looks like perhaps the VFO boards were wave soldered. Most likely some contaminates on the leads prevented the solder from adhering to the circuit board. As Mike would say, flux flux flux.
very interesting may I ask you what Desoldering Station Vacuum you use or recommend please thank you kind
vy 73
I am using an older Pace unit.
Tempted to buy one of these. Good proper radio. What accent is that bud
Bell Labs discovered that cutting the soldered lead after soldering damaged the flow around the lead. I usually reflow those as well. 73
Thanks for that information.
where can you get a faceplate for the yaesu ft-101zd
Hi..i have 101ZD and do they same thing.. drifting when receiving and transmit..is in the vfo the problem??is very interesting your vídeo..
I am about to buy a Yaesu FT101-ZD If I get it will you please go over it and tune it up .. Did you say in your video above no AM or FM?
Wow have a problem like that on a FT-902DM that drifted and that the display frequency was off from the actual frequency. I will look in the VFO unit to and the 6 volt power supply. Thanks Buddy for another great video
Thanks Lyle for taking the time to watch my friend. Let us know what you find.
I what u found wrong in the mox why it was clicking on & off was it a component failure especially a cap pulling relay to ground ground would be interested Buddy otherwise an excellent video.
had same issue on readout. so i seen video and opened the vfo. same issues on board also... but still didnt fix the numbers issue on display for 30m for the zd mk3 i have. grrrr.... more hunting down something i havent a clue to look for lol
All voltages correct?
havent got that far. still learning... tho 30m went hay wire again. all other bands work find. no manual for the 101zd mk3 made. seems they stoped at mk2 lol
Hi Buddy,
Just the video I need. I have a 901DM that has a stiff dial movement and I need to remove the VFO to clean the gears. 73 WB3BJU
Yep, tons of old grease in there. Wash it out good and will come back to life. Thanks Donald.
I also have a 901D with VFO that has a little backlash and feels lumpy to turn. Have taken out before but it was tricky. I can live with this but the bigger annoyance is this model tunes the opposite direction to every other radio I have ie counter clockwise to move up in frequency. If I could convert this to regular clockwise it would make operation simpler.
i have a ft 101 zd when i turn the rf gain control to the left the meter goes to the right
Correct, that is how it is designed to work.
Hi, Does anyone in Australia know someone that knows something about these ft101zd mk1????????????? help needed, Thanks
:)
:-) Back at you Sue.
11.36
how does such bad soldering even leave the factory?
I don't know how many times you have to sit in the Vfo has a problem he can just get to the damn fix
Not sure if I understand your comment.
Thanks for videos, and pronouncing solder with an "L" 😄
Thanks Alan. I hear many say sodder lol.
I found this Video very interesting I have just bought an ft-101zd mine has an rx fault I haven't tried it yet as I'm waiting for a copy of the service manual, I enjoyed looking at your video, de Barry G4DIP.