Pioneer VSX-521 AV Receiver 'NO Audio' Repair

Today we will be repairing Pioneer VSX-521 AV receiver, it turns on and does everything it suppose to but there's no audio coming through, lets see what the problem is...

[@arindamdas936]

Really appreciate the efforts you have made to make this video. Very informative and the service manual is the cherry on top.

[@stephenb4411]

Thanks Max, that was one technique I have not tried for this type of ic. Will try it. 👍👍

[@megatmohdazlanzahari9573]

Thanks for the such informative video.. now instead of meddling around with my old vsx323, i’ll just throw it away.. 😂

[@zxman1234]

Great video. My VSX-329 AV receiver has the same problem with this one, it turns on but no sound but I wonder if it has the same chip that is available right now.

[@cruisysoozi]

Thanks so much for sharing this.

[@mervynstent1578]

Adapter Port is for the Pioneer Bluetooth Adapter! The little Bluetooth Module is worth more than whole AV Receiver today!

[@mosi24]

This is amazing skills!

[@hoptoad]

Thanks for this video I have an issue where the audio works about 50% of the time - it often requires a power cycle or changing the input a few times before the "click" happens, and then a few seconds later audio stream starts. Does this sound like a failing component I could replace?

[@MaxELECTRONICS]

It could be electrolytic capacitors or bad voltage regulator. Check power rails on voltage regulators.

[@matteo_9573]

I have Pioneer vsx-919ah, is probably the corrispective cip "BD3473KS2"? I have the same problem, identical

[@asankafernando5066]

@Max, I have VSX-324, if i plug hdmi input then the audio is comimg but no audio if connected to analog inputs, even the tuner sound is not coming, any tip on this?

[@MaxELECTRONICS]

Try doing hard reset, if that doesn’t work then I think it would be ether AD/DA converter or switching IC.

[@mikefishes6232]

having the same issue on a vsx 53.. no audio at all coming from it but hdmi inputs show up on the output.. it was acting really funny like not turning off even after hitting the power button it would click to shut off but the osd will be frozen and I have to pull the plug out to shut it off.. I did do a factory reset and the power seemed to fix but still no audio

[@andreipopa4122]

HI Max ELECTRONICS, Awesome video. I have a Pioneer VSX-827 and when I turn it on it sends a woom high signal to my subwoofer. I initially suspected the sub but now I thing the receiver is nor muting the preamp output when it gets turned off and when it gets turn back on the woom happens.. It's so loud it shakes my windows. I tried to enter the service menu, but nothing happens, nothing appears on the display no relay click noting. I tried to find the service manual for this particular receiver and I only found 7 pages. Could you please give me some pointers of what to do next.

[@larrydaigle5254]

I have a vsx 9700s! New to the newer stuff. Done my fair share of 60 and 70’s stuff , which I really prefer! My question is simple, how are the ribbon plugs disconnected? Is there a locking tab? Trying to pull on the plug, and doesn’t seem to release! Thanks, greatly appreciated

[@MaxELECTRONICS]

Most of the time they just pull out, you can tell usually by the socket, sometimes the have a tab that you need to pull up, most of the time it’s just a simple direct pull up, that’s for the FPC flex cable

[@larrydaigle5254]

Thanks for the reply! I really appreciate it! I also enjoy your videos, they are very informative and helpful! Thanks again!

[@vonzen]

Thanks very informative. My pioneer elite went into protection mode, now it’s not making a sound. The amp board seems ok. I checked every component. I suspect the audio board is not good. I tried heating up the dts chip with hot air gun but no luck. How do you diagnose the audio board?

[@MaxELECTRONICS]

You can use signal tracer on analog lines

[@johncameron4172]

I have a Pioneer VSX-D514 that had some Hawaiian Punch spilled in it. I quickly unplugged it but it was too late. It wouldn’t power up. I used the “power + advance surround” combo and it now powers up. However, I have no audio and it says “phones in”. I have tried plugging in headphones and unplugging them several times but no luck. I believe that the Hawaiian Punch has gotten on the sensor for the headphones and made it stick. Where is this sensor and what do I clean it with?

[@MaxELECTRONICS]

Alcohol 99%. You can buy it in spray can, unplug the amp, spray into the headphone jack generously and keep plugging and unplugging headphones to clean, spray again and repeat.

[@soosaisteven3984]

Thanks for the informative video. Congratulations for the successful repair. My question, where do you buy that IC from?

[@MaxELECTRONICS]

AliExpress has lots of them

[@soosaisteven3984]

Thank you brother.

[@Choot247]

Hey could u please tell how to restard the TV one is the the same way as the rest

[@maheshdanushka6688]

Hi just to know I have same problem with my pioneer home stereo but the thing is I got sound from both main speakers only no sounds from other speaker even sub is not make any sense Changing the import souse and function still same result. It could be the ic failure ?

[@MaxELECTRONICS]

Sounds like D-board, the IC I’ve replaced is a switching IC,

[@rollyavecilla]

Hello, I am happy to have found your channel. Do you have service manual for the VSX-D752S? Or can you please point me to the right direction to get the manual? Mine needs tapping to the side where the volume knob is located for the amplifier to have sound. This happens a lot. More power.

[@MaxELECTRONICS]

I can’t font this exact one but I think they very similar with 4900 model, possibly identical just different name, pioneer likes to release same equipment under different model names in different countries. Try this SM: drive.google.com/file/d/1kFei2EnotnnTX7nWB97mGoIWA8OOHvm6/view?usp=drivesdk

[@user-lq5dv2db3n]

​@@MaxELECTRONICSGreetings, dear Max! Can you explain how to replace the dsp processor with the pioneer vsx 521, is it required to flash it or do you only need to flash the 29lv160 flash memory? The service menu does not show the dsp firmware version, it shows dashes. Now I'm waiting for a programmer for flash memory firmware, and if you need to replace the dsp, what should I do?

[@MaxELECTRONICS]

@user-lq5dv2db3n usually dsp from OEM would already have firmware on it, or probably can be uploaded with USB once installed in the amp.

[@user-lq5dv2db3n]

@@MaxELECTRONICS I want to buy a DSP processor on Ali express, but unfortunately there is no USB for pioneer vsx 521 from the factory.

[@Anthony-pv7jd]

max my VSX-521-K isnt putting out any sound from the bare wires. if i plug into the RCA out lines I get sound. I have lost the remote so im not sure if this is a harward issue or a setting. any suggestions?

[@MaxELECTRONICS]

Try “direct through” function, if that doesn’t work Try factory reset, amd if still no sound it would be your D-Main board.

[@jeffchan1901]

thank you very informative. guess my Pioneer surround amp has a faulty chip which is funny since I didnt play it at all since it last worked

[@gaborkovacs189]

Hi Max, thanks for the video. I have a VSX-421. tested with 2 android box. I have to power on/off a couple of times either the android or the receiver to get sound via hdmi. And even after I get sound it can break when the audio type changes. (I am not sure I use the right term here). Do you have any idea what's wrong? Thank you!

[@MaxELECTRONICS]

Sounds like ether compatibility issue or a weak signal through the cable, try changing cable and check that hdmi on both ports are clean, try plugging same setup directly to tv and see if there’s same issue, that’ll help you pinpoint if it’s an amp or cable or something else.

[@gaborkovacs5095]

@@MaxELECTRONICS Thank you very much for your answer. I tried a lot of things in the past months, but nothing really helped. Currently I added an optical cable next to the hdmi and it is more stable, but the same issue is still happening, just not as often. If the sound is gone there is no sound even if I switch to tuner or any other input source. Sometimes it is enough to go a circle with "signal sel", sometimes an on/off isn't enough. So the issue is with the amp and I had an another anrdoid tvbox earlier which caused the same.

[@MaxELECTRONICS]

Possibly bad capacitors or dry solder joints inside the amp

[@jameskropf2493]

Looking for a little help. I have a Pioneer VSX-453 receiver I just bought. The right channel is staticky and distorted, but am getting power decent power. I cleaned the pots and boards. It still sounds like that. Left channel is fine.

[@jameskropf2493]

Could this possibly be a bad resistor? Also, it's not the input. It doesn't matter if I am using tuner, CD, ect. Staticky distorted right channel. The further I turn it up, the worse the right channel sounds.

[@muhammadali4154]

I bought pioneer private pro ax 720 amplifier but it is not giving sound to the speakers but when i turn on the amplifier there is a slight vibration in the amplifier. Plz tell how can i fix

[@MaxELECTRONICS]

Hi it’s hard to say, could be power rail, or shorted amp, or bad caps.

[@shinshulancha]

Thanks for all your hard work. I think I've killed two Receivers by plugging in HDMI cables whilst the unit was powered. Now both units have no sound. How much did that chip cost?

[@MaxELECTRONICS]

They are around $70 from AliExpress

[@MaxELECTRONICS]

For the DSP

[@acat6821]

I have a pioneer vsx-527, suddenly no sound output or hdmi, the hdmi board ontop does not have power, 1.4v only. Would you recommend any way to fix or what would cause this?

[@MaxELECTRONICS]

It probably the power supply board, check the voltage regulators and make sure all power rails are present.

[@aquamanglb]

Hi Max, congrats for the nice work. Could you please give an advice please, I have a VSX-921-K AV receiver and only works on pure direct sound, also the hdmi doesn´t connect to the led tv screen. I tried factory reset but still the problem. Thank you in advance

[@MaxELECTRONICS]

Hi that would be the D board (digital board) check that all power buses have correct voltage. If they do, then it’s ether crystal, or ic

[@MaxELECTRONICS]

Here’s a service manual that has step by step guide to troubleshoot the D board drive.google.com/file/d/1kxU0J7WaNyxXJAqajkpPiQuWi6IipRAt/view?usp=drivesdk

[@aquamanglb]

Thank you @@MaxELECTRONICS I will check the digital board

[@aquamanglb]

@@MaxELECTRONICS Really appreciate you help and the manual, thaks again

[@loris.badeau]

@@MaxELECTRONICS Hi man, i've been having problems with bluetooth on a vsx 921. Its stuck on "starting" "retreiver air"

[@MrBali123456]

My vsx-329 has no sound. Since i am not a technician, the first thing what i do is the speaker setup, set channel setup auto mode. It won't bother the input, as it produce the buzzing sound from itself to test and set the volume for each channel. No buzz sound, but the center speaker has a very very soft buzz sound (need to have ear touch the speaker) which on and off each time the channel change to L C R rearR, rearL then sub. I factory reset it, then problems gone. But not after 24 hours, the same thing happen again, no sound. This time, factory reset unable to solve the problem anymore. I wish you can help to tell me what might be happening on the receiver. Thank you for the video, Sir.

[@ALLMIGHT_PLUS_ULTRA]

Hi Max, I have a Pioneer VSX Elite 52, has this same exact issue, no sound output. Do you think they have the same IC as with yours? Also, where can I buy the IC?

[@MaxELECTRONICS]

I’m not sure if they have same ic, but you can buy the Ic’s on AliExpress

[@ALLMIGHT_PLUS_ULTRA]

@@MaxELECTRONICS thanks.

[@ALLMIGHT_PLUS_ULTRA]

@@MaxELECTRONICS replace the IC. Same issue. Next component I should check?

[@MaxELECTRONICS]

Diagnose D-Mail board

[@MaxELECTRONICS]

Have you checked that amp PCB is working?

[@rezidentbivrip]

I have this exact receiver. I get sound through the tuner, but nothing through HDMI. This happened before and there was a setting I could change, but I don't remember what it was and cannot find it.

[@MaxELECTRONICS]

Try resetting the amp to a factory default

[@yusuframadhan6543]

Hi max, I have a pioneer av receiver vsx-rs320 with the same problem of no sound I tried checking for errors and found overload 028 I tried reseting but didnt work, I disconnected all wires and connected them back but the error is still shiwing and still no sound. Please advise what to do next

[@MaxELECTRONICS]

It could be the amp problem, check the amplifier side of it for shorted transistors and check that all the voltages on the power supply board are correct.

[@yusuframadhan6543]

@@MaxELECTRONICS will do that and get back to you. Thanks.

[@Innovate-Games]

I have the pioneer vsx 821 sometimes get audio by hdmi and sometimes not at all, same with the optical cable. Tried factory reset many time, what should I do next? Help me before im throwing it to the garbage.

[@MaxELECTRONICS]

Check that all the caps are fine and check all power rails are okay, if all good then probably reflow the DSP chip

[@DhakaMusicOmar]

I have audio but only on pure direct & the rest doesn't have sound, do u have a fix for the fault. pioneer vsx 1020

[@MaxELECTRONICS]

It sounds like DSP chip on the D-Board

[@DhakaMusicOmar]

so what do i do next?@@MaxELECTRONICS

[@MaxELECTRONICS]

Probably the easiest for you is to replace the D-Board, other way you need to diagnose and repair it yourself but it’s time consuming and delicate process unless you have all the equipment to replace the IC’s. You could look at the board model number on it and Google it, but before you do try resetting the amp to factory default, sometimes it’s a software glitch.

[@DhakaMusicOmar]

thank you, i tried everything, i think the dsp chip is failing@@MaxELECTRONICS

[@jonaldrin9145]

good day. anyone know what DC: 047 error in a Pioneer Receiver?

[@canalgamingchannel5132]

Where can I buy the chip for pioneer vsx-321

[@MaxELECTRONICS]

EBay or AliExpress

[@hen-vladnortey4380]

Hi Max, please I have pioneer SC-LX58 and I’m having code 1-290006513121… When I try to turn the volume up then it’s starts to change to ADV.SURROUND and STEREO, back and forth. If I turned the volume to zero then it works as normal. Could the problem be the volume or a faulty component? If yes, please do you do repairs? Thank you.

[@MaxELECTRONICS]

Sounds like could be loose connectors on interface pcb or bad power on power rails, check connectors and check voltages on low voltage rails. Unfortunately I’m still renovating house after floods and unable to do any repairs at this time.

[@cristina2372]

Hello. I have a pioneer vsx 922 team. and it gives me a UE22 error. We have managed to make it sound once by resetting it but now it no longer works, the error reappears. we tried to make the backturn on to see the error and it doesn't work. thanks greetings

[@MaxELECTRONICS]

Hi, you need to replace DSP ic’s

[@sunnyjay137]

pioneer VSX-1020 pqls flashing--- 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.

[@MaxELECTRONICS]

It’s probably bad capacitors on power supply board, PQLS means there’s something wrong with voltages, usually bad caps, maybe V-Reg.

[@sunnyjay137]

@@MaxELECTRONICS Thanks Max

[@nikoss450]

Hello from Greece, I just got the specific model for 20 backs and thought give it a try, so we're dud you buy the chip from, thanks in advance, Greece is watching🇬🇷 keep up!

[@MaxELECTRONICS]

They’re available from AliExpress

[@nikoss450]

@@MaxELECTRONICS Thank you my friend for the quick reply, subscribed🙏

[@dhanushsurya7274]

Do you have extra hdmi board for pioneer vsx 521 I have been searching for it

[@MaxELECTRONICS]

Unfortunately no, all digital board for amps are hard to find, try eBay.

[@dhanushsurya7274]

@@MaxELECTRONICS thank you if it comes don't forget me 🤝🤝🤝

[@MaxELECTRONICS]

You welcome to join chat in live stream this Saturday

[@MaxELECTRONICS]

Sounds like loose hdmi port

[@akasam5278]

i have a pioneer vsx 329k that powers on fine in short terms one channel is dead no static noise at all only one channel works on the speaker terminals what should i do how do i fault find ? the other channel is fine works perfect

[@MaxELECTRONICS]

Check the amp section for open transistor’s and capacitors

[@spec4157]

Hello. I have a Pioneer 422. The receiver turns on, after 10 seconds the relay clicks, but no sound appears. You need to wait 5-10 minutes, after which the sound appears and everything works stably. The audio cable is optical SPDIF, I tried changing the cable, to no avail. Any thoughts or guesses?

[@MaxELECTRONICS]

Could be capacitors, it sounds like they “reform” after 10 min and start working. Check power rails if all voltages are correct.

[@spec4157]

@@MaxELECTRONICS Thanks for the answer. I had the same thoughts that there was something wrong with the capacitors. They also say that these receivers often have problems with minus mass. Minus Mass has poor contact with the body over time.

[@MaxELECTRONICS]

@spec4157 what do you mean by “minus mass”?

[@spec4157]

@@MaxELECTRONICS GND

[@spec4157]

@@MaxELECTRONICS GND throughout the body

[@limtk55]

Great video. Learnt much. I have a VSX422 which shuts down on its own. Likely in protection mode. Is there a list of codes that describe each type of fault? How does one begin to troubleshoot the error?

[@MaxELECTRONICS]

You need to get into service menu and see what is the problem, it will tell you of its power supply or amp or other board.

[@gaborkovacs189]

I know it is a one year old post, but maybe this helps someone: you can accidentally set an auto power off delay in the settings. it happened to me :)

[@tigerelectronics5966]

I think I have accidentally done that to mine, do you happen to know how to disable it?

[@eses1231230]

hello my av receiver from Pioneer vsx 924 flashes the red MCACC what can I do

[@MaxELECTRONICS]

Try doing a full reset, see if that fixes it

[@DhakaMusicOmar]

technics sound distortion on su a800. can you tell me where to start, it's built with a svi 3205

[@MaxELECTRONICS]

Check capacitors

[@Avatar8o]

I kinda have the same issue, except for I do have audio through my headphones. I believe the person before me hooked up a car speaker to it,

[@trolleysinc.6708]

Hey I'm getting an error code on mine it says over 034 and I can't figure out what the problem is and can't figure out what the error code means

[@MRocPerine]

do you accept boards for repair? I have a pioneer that needs help.

[@MaxELECTRONICS]

Unfortunately no, I’m located in Australia and shipping is very expensive. I can recommend an amazing repairman in US

[@MRocPerine]

@@MaxELECTRONICS thanks for the reply. I would actually love both options seeing to it that I would be only sending a board and not the receiver. Either way, please do give me the info for the US repair person. Thanks!

[@MegaFREEAIR]

i repair a lot of car amps and pioneer ones never burnt their porwer transistor, just somtimes power supply mosfet, because they use high quality components, only u can find some small capacitors out of range with the pass of the time or other small and stupid fails, but the power transistors use to be good and strong.

[@alesstefe2615]

hi me have pioneer reciwer sc lx 75 and on display see va 22 and no sound what to do please

[@eugenenephtalimagsalin7298]

hi max electronics...i have a pioneer vsx 522 and has no audio...already clear the error, what should i do?

[@MaxELECTRONICS]

Check power rails, and transistors/amps, could be the D board also

[@eugenenephtalimagsalin7298]

My tech told me that I have to replace the HDMI control board?

[@MaxELECTRONICS]

That’s the D Board, you can still fix it. You don’t have to replace the whole board

[@SDsailor7]

I have and old Pioneer vsx-516-k home theater receiver and i am having the same problem. No sound output. I reset the receiver to factory specs and still no sound. Anyone have any ideas as to what is the problem? Thank you

[@MaxELECTRONICS]

It could be ether the ic shown in the video, or the DAC ic or the digital switch ic it needs to be diagnosed, check that all the voltages to D-Board are okay and all the ICs are supplied with power,

[@SDsailor7]

@@MaxELECTRONICS Thank you will do.

[@MrRufos86]

how did you end up finding that the chip was off ?

[@MaxELECTRONICS]

The audio signal was going into it but nothing was coming out of the chip. Just scope it out,

[@maigugelacct4769]

sir paano po kaya yung Pioneer vsx 522 namin, yung sound ng sorround speaker sa front speaker din sya lumalabas?

[@vukvukovic7064]

was it working in pure direct mode before repair?

[@MaxELECTRONICS]

No, there was no audio, it was coming to the chip but not out of the chip.

[@vukvukovic7064]

@@MaxELECTRONICS I have similar model vsx 329-k, it works but only in pure direct mode... Great sound, also headphones not working... Do you know what's the problem??? Thank you!

[@MaxELECTRONICS]

That would be digital board, it could be ether the A/D converter IC or processor or simply a crystal. Check all the power rails are present and with in range. If they are then check the A/D and then crystal and then processor.

[@vukvukovic7064]

@@MaxELECTRONICS Thank you very much, I think it is the DSP chip... but I will check it all.

[@z_polarcat]

What made you suspect the chip?

[@MaxELECTRONICS]

Just used signal tracer and see where signal stops

[@joseluisgoncalves4230]

Hi, how much is the fix for this problem? is too expensive?

[@MaxELECTRONICS]

No, the IC was $6 aud from ebay

[@behnaz59]

I have a 2.1 pioneer system with 522k amp. When I play a song the subwoofer doesn't sound and I need to set speakers in the amp menu to make subwoofer works and after turning the amp off and on again, the subwoofer doesn't sound again. Can you help?

[@MaxELECTRONICS]

Try resetting whole thing to default factory setting and set up again

[@behnaz59]

@@MaxELECTRONICS I did but the problem still exists

[@MaxELECTRONICS]

Have you looked at the troubleshooting guide in service manual?

[@behnaz59]

@@MaxELECTRONICS The subwoofer works correctly but the amp doesn't output signal from subwoofer pre out. How is it fixed?

[@MaxELECTRONICS]

Try injecting 100hz signal and trace it using signal tracer. See if that would help.

[@xxsh1ro149]

recently got a VSX-1124-k Pioneer Reciever and it displays video through the hdmi ports but i get no sound through any port including my tv and optical out but when i turn the volume up on certain modes like stereo i hear the ticking of the volume being turned up and the speakers make the humming sound due to getting power please help

[@MaxELECTRONICS]

It’s hard to tell without diagnostics, check all power rails inside if they all are at proper voltage.

[@xxsh1ro149]

@@MaxELECTRONICS are you located in the us? If so do you do service on receivers for people i would pay for shipping to you and back if you do that sort of thing?

[@MaxELECTRONICS]

Unfortunately I’m located in Australia and shipping would be astronomical, try contacting @MrCarlsonsLab he’s located in US, checkout his channel too, he does an amazing repairs.

[@xxsh1ro149]

@@MaxELECTRONICS awesome thank you i will

[@MaxELECTRONICS]

Don’t forget to mention my channel to him

[@darrengerman5761]

What's the chip you used

[@MaxELECTRONICS]

It’s R2A15218FP in QFP package.

[@darrengerman5761]

@@MaxELECTRONICS thank you, appreciated. I have the no sound issue also

[@MaxELECTRONICS]

Check that it’s not a main board first

[@moni.gheorghe9999]

Hello. I have had a PIONEER VSX 527 K for about 10 years and it bothers me, meaning it no longer reads music from USB and, it doesn't connect to the net, I can't listen to radio on the net (as if it doesn't receive an IP address) , the net cable has been replaced but in vain, the same problem. If you can help me with any information, contact me. Thank you.

[@MaxELECTRONICS]

Sounds like there may be a problem with power supply board inside, have a look if there’s any bloated or leaky capacitors inside. Also try doing a factory reset

[@moni.gheorghe9999]

@@MaxELECTRONICS Tanks. I did a reset, all in vain. It's annoying that I can't update it, and I can't find any firmware to download ...

[@MaxELECTRONICS]

Have you tried hard reset by holding down buttons on front panel or just using a menu on screen?

[@moni.gheorghe9999]

@@MaxELECTRONICS I tried and did that kzbin.info/www/bejne/pX2oiImVh551ba8

[@moni.gheorghe9999]

Is there another method?

[@alvarolourenco7036]

👏

[@marcump]

Plug in headphones to check the preamp section

[@DavidStrange-hx9yu]

It’s good

[@zex019]

11:13 They are not mosfets, they are darlington transistors. It is clearly written on the board B, C, E (base, collector, emitter), not G, D, S (gate, drain, source)...

[@MrShitrope]

bjt's

[@kittenkittycomel850]

What's the serial number of this chip..tq

[@MaxELECTRONICS]

I’d have to pull it apart to have a look as it’s individual to every chip, would be no use anyway as it’s for manufacturers purposes only.

[@user-vz7cv6oi5r]

Salve, nel mio funziona solo la radio, cosa posso fare?

[@ronbushnell415]

I have a pioneer vsx 80 with the same problem

[@pankajbanga4948]

Can you please help me Sc-lx

[@blackimp4987]

it' s a little late for answering but to me any part, even disassembling, is interesting

[@mastertechlima1067]

its vary rare its damage.its volume ic. 99% of problems are.on hdmi board.

[@ByKaMa4Dj6]

A me esce errore temp1:0002, l’ho resettato ma non si sente l’audio

[@SDsailor7]

So the problem was a bad IC?

[@MaxELECTRONICS]

Yes

[@SDsailor7]

@@MaxELECTRONICS Excellent troubleshooting and work!

[@DavidStrange-hx9yu]

My 521 will not come on can u help me

[@MaxELECTRONICS]

Is standby light on?

[@DavidStrange-hx9yu]

No I have it plug up and nothing is on

[@DavidStrange-hx9yu]

The dues is not blown

[@MaxELECTRONICS]

@DavidStrange-hx9yu try checking the fuses inside

[@jagadeesha.n.jagadeesha9756]

Poineer vsx 529 surround notwarking

[@obadiahwashington7060]

Did anybody notice that he caught a "Mosquito" @7:00...🤔🤔🤔

[@himalayannekocattery703]

good day sir where to buy pioneer vsa-ax3 main control assy board part number AWK 7781

[@MaxELECTRONICS]

Hi, try eBay or AliExpress. That’s where I usually source them.

[@mastertechlima1067]

its not use Mosfet.its Pnp and npn bipolar tansistors.

[@valeriom76]

It was a great video, until at 20:37 you jump from a bad cap to a bad chip with no explanation whatsoever. Nice! Why did you completely cut out how you troubleshot it was a chip issue?

[@spec4157]

Да, тоже было очень интересно. Почему так поступил автор.

[@MaxELECTRONICS]

It was filmed “on the fly” and not in the lab, I simply used signal generator that I’ve injected into inputs and signal tracer to see where signal goes, and no Mater what I did signal never went any further then that switching IC, that was a good indicator that IC was dead.

[@spec4157]

@@MaxELECTRONICS Class. Well done!

[@BruceLee-zw5ue]

So my clown friend, how did you figure out it was a chip that was the problem?

[@user-ud6sw5cp4w]

921 pioneer-14transistors 😵‍💫

[@richardmcfarlane1220]

The problem is in the remote not the recover.

[@failingup4907]

If your receiver is older, your not doing this.. Get a new receiver with newer tech. You can get a decent receiver for $600-1000. Patching up a 7 yr old receiver doesn't make any sense.

[@MaxELECTRONICS]

I have hi-end receivers at home, I’m didn’t fix this for myself, I did this to keep it out of landfills and out of passion.

[@thevikig420]

Hey man I got a barbecued receiver no job cuz I’m hurt and a fuck load of time to tinker lol

[@failingup4907]

@@thevikig420 Nothing wrong with that. 👍

[@jmdds]

I have one exactly the same unit.The sound is working well but I get a very high pitch sound (like a bursting capacitor)coming from the speakers about every 30 seconds scaring the shit out of my dogs.The high pitch sound mainly the left speakers.what can it be ?

[@MaxELECTRONICS]

It sounds like an amp section, but worth checking all power rails to make sure all low voltages are correct on power supply board

[@OlegZhigan]

Подскажите ,у меня модель 422,звук появляется и пропадает,появляется спустя 2-3 часа..

[@MaxELECTRONICS]

Check all power rails to make sure there’s correct voltages and check all capacitors. Check for discolouration of solder joints, there’s a possibility when it gets hot bad solder joints expand and lose connection.