Pioneer Model VSX-1021-K Stereo Reciever Repair
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- čas přidán 13. 02. 2015
- This video details that aspect of troubleshooting that involves systematically eliminating potential sources of trouble until the root cause is determined. In this case, a 2011 Pioneer VSX-1021-K surround sound stereo receiver did not have any power. A unique method of troubleshooting using a temperature probe revealed a single zener diode had shorted out causing the standby switching power supply to go into protection mode and not start up. (2/14/2015)
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Hi,
Thanks very much for taking all the time to show how to troubleshoot and solve this amplifier repair. I've got a Pioneer VSX-920 that was given to me. At first it worked for a few days, but now it's totally dead. I pretty sure your video will help me to get my VSX-920 up and running again.
Thanks for the well diagnostic troubleshooting performance you've shown me.
Good to see how you logically isolated the failed component prior to unsoldering anything.I wish you did more electronics vudeos. I would subscribe. Thanks for this upload.
Thank you very much for this detail video. I truly appreciate it. FYI, I'm working on a VSX-522-K model and the funny thing the same zener diode is bad on it, believe it or not, however the PS board is much smaller than the one you are working on this video, (less than 1/2 the size, its very very small Power Board, with very few components). This board has total of 7 diodes and 3 of them are Zener Diodes. and 1 of them on mine is shorted out on both way testing, and its located right next to the relay.Anyway, I thought I share that with you and your viewers for my model. Again, THANK YOU VERY MUCH, your video was a HUGE help.
That zener did its job. Its whole purpose in the circuit is to fail in an emergency. Zeners tend to fail by shorting out. That's why that zener has no resistor to limit its current. It acts as a crowbar and protects the rest of the device. At some point there was probably a surge that caused the zener to conduct and immediately overheat and fail, shorting the secondary, causing the current limiter in the chip to activate and shut it down.
Thanks for this video. I have to troubleshoot this amp for network and front USB not powering. Since everything else works, I suspect a power line failure down the board. Lucky I found the repair manual online. Now I have to apply my ohm-meter and weak skills to it.
Great video, and the timing on the song was amazing, right when it turned on. Glad you were able to save it.
Yes. That was one of my favorite songs as well. I wanted to crank it but didn't want to kill the tiny test speakers.
I love this vid !....And the best part is when it was plugged in for the first time after the repair and the tuner comes on playing "The Cars- Just What I Needed" it's like the amp was thanking you the best it could LOL.
Great lesson,I use the light bulb accross the fuse but never a battery to look for excess current draw thanks. Jim
Great Video as always.
Thanks for the vid, it actually reset my receiver when I used the power and auto surround buttons and now it works perfect. I don't understand why the mfg does not suggest this in their problem solving section.
Your comment just saved me! I saw other people saying that "enter" and "auto surround" fixed it, but that didn't do anything. Thank you! I was using some bigger speakers I don't normally use and turned them up pretty loud and it turned off with no sign of turning on. The fuse inside was fine so obviously I thought I needed to look inside(since everyone else's advice was wrong I thought I had no other choice). But nope. Thank you!
Kuddos to the video too, though. This is an incredibly helpful video for someone who doesn't even know much about hardware.
Hello, Can you please help me reset my receiver. I've tried all the ways but I'm not seeing a prompt to reset. What is the exact way to try the power+auto-surround button. Do we need to hold on one and press the other. Please help...
@@joshuacoleman6294 0
Man you know your stuff!! Im very impressed!! Subscribed :)
Great video, thank you
well done, congrats!
One of my receiver is the same exact model and it has been in service for 3 years, the features are excellent but sound output is average, bass is not solid, good for movie but not for pure music.
But it still is a very decent receiver just top high-end on sound.
There are some problem with its design, i.e HDMI pass-though works one of 10 time you try, network remote constantly doesn't work well, that explains on this thing, too many feature back in year 2011 was a pioneer but it does has some bugs on this unit.
It is not unusual for this happen if the previous owner plays load PCM signal for a long time to burn the power part
This helped me with my VSX-830-K, the shunt regulator KIA2431AP failed on it.
Way to go! That's what I call a proper attitude towards the Hi-Fi equipment. A lot of thinking and effort went into that sweet baby of Pioneer's so it's only logical to appreciate it and put some effort into diagnosing it and trying to repair it. Congratulations on the successful repair. I fix retro computers and other equipment from time to time, so I know what it's like to take care of electronic equipment that is dear to the owner. Greetings from Poland.
So I took mine apart and it looks like I have an issue with the same diode. Does anyone know the part number? According to the video it looks like MTZJ6.2A. I can’t find this as of 3/2018. I do see another part MTZJ6V2SA that may work but looks like it’s back ordered.
Does anyone have a good website or source for these parts?
Hi,a very educational video to me Thanks,if you didn't use the inductor what else could you use to check the millivolts
Good video. .. I have the same problem with my vsx 321 but my power board is such smaller do u think I can use the same steps you use to trouble shoot the 321
Hard to believe that a Little shitty 50 cents zener cause the total shutdown of the unit, before that i knew that the problem was the zener I was blaming the switch mode power supply some burn trace at the PCB,so it was a really great idea to hookup the temperatura test on that zener, anyway great job very clean and you did not have to spent in unecessary components, thanks for share
Do you know if pioneer receivers use battery backup for keeping preset stations in its memory
I have a Harman kardon avr1700. upon power up it lights for a second then turns off with a blinking orange light. if I disconnect the amp board it stays on. tested transistors with meter in diode mode. I found I can test them both ways. I tested one with probes on c and e and it tested very low. like 0001. thinking they are bad. any thoughts ?
Great Video. I have the same Pioneer model. The video comes on but the sound is gone. Which board would be the issue here. I would like to replace the faulty board. Any recommendation where i can get one? .
Hi I have a pioneer vsx doubtful receive 906s and when I turn it passes some four seconds and appears paweroff msg and off just what serar you sat?
Do you know if this receiver was showing the "DC error" after doing the error detection count?
(from OFF/STANDBY state) press & hold [PRESET
thank you
A very impressive job troubleshooting that zener diode issue. I have a Pioneer Elite VSX-50 that appears to be working with the exception of no audio out of the speakers or headphones. Do you have any suggestion as where I should focus my attention on this rather complicated receiver? I do not have the Pioneer remote but I have programmed a Logitech Harmony 650 for this device.
With all due to respect your efforts, this standby power supply could have been repaired in about 15 minutes maximum. You just needed to check output components: CAPS, diodes, voltage reference, zenner diode etc. Anyway, I appreciate your work here. Best regards.
Like his diode tester said @ 13:30 OUCH..... It takes 14 min to open the case and 18 min to find and print the data sheet then another 20 min to set up cameras and get all the tools out. OK it was 10 min of this zener is bad but this was a learning video not speedy fix it shop.
Have you encountered a receiver that works but the display doesn’t work? I have a VSX-816 with such a case. Any suggestion?
@shadowrider do you live in va? my classic rock station is 106.9!
Folks - I accidently connected my 110V AV receiver (Harman Kardon) into a 220V power supply. After about 5 seconds there was a pop sound and there was some smoke. Any idea which parts may have been busted? Or is the whole receiver junk now?
Thanks for video, Can you share the service manual pls....
I have VSX921, suddenly notices there is not audio from SBR and SR channel; I checked that there is audio at relay PIN. Other channels are working fine. could it be a problem with relay? any logic that is not turning relay on. Thanks in advance
Thanks for the trouble shooting class, I paid good money at teck school 38 years ago and never got a lessen like that. I'm gona take a looksee if you have any more videos like this, I have a pioneer VSX-90TXV receiver that the TV input's don't work, the HDMI or right/red, left/white, video/yellow, plugs. I have my TV connected up to the DVR/VCR1 input to get my sound through my receiver now, but there is no HDMI port for that input..... And I need to replace the power button (it will only turn on and off by the remote). Can you give me any advice or point me in some direction? If I can figure it out I don't even know where to by parts, maybe radio shack, and where did you get your schematics'? Any advice would be greatly appreciated.
I had same issue my VSH-819H No Power and No Display...but there's an input power for Main Transformers...PLS Kindly give me some ideas to fix it...thank you in advance!
Would you be interested in repairing a Centex by pioneer model number KH-5151? One channel out and back light not working.
Hi shadowrider have a same model giving out an error code ue22 any chance you might know where to begin trouble shooting with this code
Hello I have the same stereo it turns on but I get no sound from any channel including the "b" speakers. If I slap the side of the unit I get some static coming from the speakers for a second but that's it! Any clue where to start repairing this unit. I got it for free and I'd love to get it working any help would be phenomenal. Thanks in advance!
were can i get the diagram??
I have the same exact receiver and it wont turn on. I plug it in and the advanced MCACC keeps blinking in red. I press the power button on the receiver and it just keeps blinking and wont turn on. Ang suggestions on what that problem is?? I would appreciate it thanks
Does overheat protection circuit have to be high or low?
I had a flashing hdmi so. I disconnected the power amp board. I tested all the mosfets and transistors but they all tested ok.
I'm ready to replace the board, but with it unplugged I get an "overheat" error and then it powers off. I know that this is because of protection mode.
I seen an article that said to place a 300ohm resistor between the pins of The posistor to bypass the protection, but alas I have 3 wires, namely
Aso, radi_thermal, and tr_thermal.
I tried the resistor in between the triad in various configs and still get the overheat message.
So I'm wondering if it's normal to be getting an overheat error with the power amp disconnected. The only wire that is plugged in is the only for thermal (a 3 pin with 2 black and a white).
Any help would be appreciated.
check xprotect xolerr and xdcerr on the main power board those should all be 5 volts
nice amp but i still love my vintage amps. i repair/restore marantz,pioneer,sansui,toshiba etc.... in a electronic tech talk we call those receivers PPJ (plastic piece of junk)
I have a question looking at the schematics, there’s components label starts with B.
Does anyone keen to share what component that is?
There are loads of them, usually between the DC power source and voltage regulator.
It has no polarity, not resistive.
Thanks
First thing would be fuses?
Had no problems over past 11 years until the past couple of weeks. We now have a repeatedly shuts down and the blinking PQLS red light and will not power on. But when I power unplug and re-plug there is click in sound which show it was ON but only show blinking PQLS red light nothing else. I tryed all speaker and HDMI unplug but same as it is.
"just what i needed" suitable song! lol
I dont know why i am feeling happy inside for a 2015 video, but the ending was romantic. Thanks #shadowrider460 !!!
I have the same type of receiver #blinking FL off. i am not sure what the problem could be.
Go check the output relays for dry solder or the relay itself may be faulty.
Thank you very much, where can I get the 1021 source diagram?
Hallo aus Deutschland, habe das selbe Problem an meinem Pioneer VSX 1122 und hoffe das es auch die Diode ist damit er wieder funktioniert. Würden Sie Platinen auch reparieren ?
Grüße
i have a pioneer vsx-992-k and when i press the power button it just clicks but nothing lights up, what to check?
Can you make an amp that would power a speaker like the one at the begining of Back to the Future???? : D
LOL!! Give me some 3-phase 480V power and a ton of heat sinks and we can make it happen!
I have Pioneer vsx-1021-k recover, when I press on switch display power on and turn off, I check power board is ok 5volts is there and DC volts also, can any one help me to diagnose problem.
Shah Jiva
hi pal i just have this pioneer vsx 1021k totally dead with some issues after i change ths smd driver on the smps the connector supplies the 5,3 vdc but the last pin wich is the power key it does not close the circuit after you press the power button any clue where it goes to thanks in advance
I got error UE22 blinking on my pioneer 1021. any ideas on how to fix it???
ME TO 250$GONE TOSS IN FUCKN TRASH I HAVE ANOLDER 20YEARS IT LASTED I ROCKED THE FUCK OUT IT 3-4 HRS A DAY
Hi, nice video congratulations. Please I Have a Pioneer VSX d906s and when I push the power on buton after 3 seconds shows blinking "power off" and power off, just the stand by Led light comes up. Could you help me to fix my Receiver?
Use an ESR tester to test capacitors in circuit. I had a guy drop off a unit like this with a power-supply problem. I can take out this power-supply board, but I wanted to check the other high-voltage boards, such as the amplifier. I cannot figure out how to remove the top SMD IC board. The engineers have no consideration for techs who have to work on them.
Frank
Frank Reiser Video/Audio Service
Meu amigo tenho um reciver antigo pioneer Vsx 406 mais não tenho o controle vcs vendem e o valor
I have one of was on the way to the recycle bin. It needs repair.
Just my opinion. When see Samyoung caps in there, maybe those caps that cause zener diode to die. From my eperience servicing audio video equipment, Samyoung and Samwha caps are notorious from being bad and those caps not bulge at all.
Big capacitor on power supply are expensive maybe thats why a lot of company using cheap caps for power supply unit, and that is bad decision.
DSP will INTEGRATED CIRCUIT ....you help me please
alberto nakamichi QQW
i have a elite vsx-92thx model that just went out same issue no power
Hi from Russia! Nobody can help me with a solution( I hope for you! Pioneer VSX 923 Receiver randomly turns off on -30 - 26 dZb. and blinks FL OFF or Ipod light . Sound system - Monitor Audio Bronze BX5. It is switched off even at one connected channel.
Well there's my problem this wires got a little short in it!
high end it is not.i have unit from 2008 with bigger trafo and 7 identical poweramps.so mine have more power.it is a good mid end product.the same goes for mine.
you help me please
Can I send you mine?
My cheap $200 pioneer from Walmart lasted 18 months then started making these cut out ghosting echo noises. I called pioneer and they said it's not worth fixing!!! Unreal. I still have it on my shelf. Can I send it to you????
trash it ppj= plastic piece of junk
nigel mahabir it's long gone. Just dumped 900 into a new pioneer elite and it's still plastic!
Pioneer service manager to me the UE33 was not a firmware problem, but a motherboard problem, why can't they come right out and say that it needs factory repair , not covered by Pioneer cheap SOB'S
I have the VSX-1020k it will not power up it has a lil red light flashing that's says MCACC iv tried to reset it Idk what to do help me lol please its my baby.
+kevin towery I have the same issue. Did you get yours resolved?
He kept on saying that's an stereo receiver...with 7 amplifier channels ...
Does not look powerful to know that you was close to 0 on the sound numbers
You made this look so difficult but its simple get a tripod your camera made me DIZZY
i have a dead 1021 also, such a shame
They just add way to much junk options in those amps. I will keep my vsxd411 for that reason. Keep it simple.
Hi bro how are you
normally, if this diode goes, there is a reason that it happened...im sure it will blow soon again if you don't fix the real problem!
You need to equip you r lab with all necessary test equipment: LCR, oscilloscope, etc, but before that, get back to basics of electronics. Best regards.
LEC PLAY
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Good video but your movement but your camera made me DIZZZZZZY Get a tripod