Pioneer VSX-531 Receiver does not power on (HDMI light blinks)

Question

Receiver

An audio/video receiver (AVR or home audio receiver) is a consumer electronics component used in home theaters that convert signals into sound.

crwdns2934591:020crwdne2934591:0 crwdns2934593:0crwdne2934593:0

Lou Bolanis @lounatech

crwdns2934065:0crwdne2934065:0: 25

1

crwdns2931729:0crwdne2931729:0: Ndz 15, 2018

crwdns2933897:0crwdne2933897:0

Pioneer VSX-531 Receiver does not power on (HDMI light blinks)

Pioneer VSX-531 AV Receiver

5.1-channel receiver with 5x130 Watt, 4 HDMI ports, HDCP 2.2, MCACC automatic calibration, Advanced Sound Retriever, Bluetooth and USB

I have a digital copy of the user manual | Need a schematic or wiring diagram

Expert researcher / Novice electrical repair experience (I know enough not to be dangerous, and can fix most basic electronics given enough time)

Source: Found “Free” on OfferUp

Issue:

Unit does not power up
When plugged in, HDMI light flashes (indicating error state)
No other lights illuminate, standby/on button doesn’t function

Error Diagnosis:

(Per user manual): The HDMI indicator blinks and the power does not turn on.

The receiver may have a serious problem. Do not try switching the receiver on. Unplug the receiver from the wall and call a Pioneer authorized independent service company
That’s helpful…?

Troubleshooting:

Able to temporarily clear error by simultaneously pressing “Advanced Surround” and “Standby/on” for 5 seconds
- After doing so, unit clicked, initialized, something got hot & smoked for a second
- Unit went back into safety power off
- Back to HDMI flashing error state

What I’ve done:

Isolated component that was getting hot (smoking): Resistor R14FL
Uninstalled the MOSFET / heatsync daughter board (720-07995-000-0S) from the unit, this board contains the overheating resistor
Resistor tests same ohm resistance (.34) as adjacent resistor on neighbor MOSFET

Pix

Burning Resistor (circled in red)

Photos of the MOSFET / heatsync daughter board (720-07995-000-0S)

Really appreciate any help that the forum can offer :-)

Cheers,

Lou

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0

crwdns2889612:0crwdne2889612:0 2

crwdns2944067:03crwdne2944067:0

Thank you very much, your answer was helpful, with appreciation.

crwdns2934271:0Kul 26, 2020crwdnd2934271:0 eugen nicolescu crwdne2934271:0

Hello sir i was wondering did you ever end up figuring out the pioneer reciever. I had mine over heat also going into protection mode. Same resistors went out and that channel the transistors were bad too. I replaced them all and then soldered it all back together and reset it and the protection still comes on. Im at my witts end. Any insight would be great i really thought i had it whooped. I was able to download a service manual off manuallibs or something and its for a vsx530 and had very similar boards and parts so ive been hsing it to check curcuits.

crwdns2934271:0Maw 16, 2021crwdnd2934271:0 Garrettwright87 crwdne2934271:0

Hi - I had the same issue where the HDMI light flashes and the unit turns off. I tried a factory reset, and now it won’t turn on at all (makes the click sound when you press the power button and then the similar power down noise). Any ideas?

crwdns2934271:0N'w 6, 2023crwdnd2934271:0 George B crwdne2934271:0

crwdns2934285:0crwdne2934285:0

crwdns2933315:02crwdne2933315:0

Thank you very much, your answer was helpful, with appreciation. — eugen nicolescu
Hello sir i was wondering did you ever end up figuring out the pioneer reciever. I had mine over heat also going into protection mode. Same resistors went out and that channel the transistors were bad too. I replaced them all and then soldered it all back together and reset it and the protection still comes on. Im at my witts end. Any insight would be great i really thought i had it whooped. I was able to download a service manual off manuallibs or something and its for a vsx530 and had very similar boards and parts so ive been hsing it to check curcuits. — Garrettwright87
Hi - I had the same issue where the HDMI light flashes and the unit turns off. I tried a factory reset, and now it won’t turn on at all (makes the click sound when you press the power button and then the similar power down noise). Any ideas? — George B

score 1 · Answer 1 · 2018-09-16T07:20:03-07:00

crwdns2934057:0crwdne2934057:0

Abrsvc @abrsvc

crwdns2934065:0crwdne2934065:0: 4,2crwdns2936485:0crwdne2936485:0

ABR Services

3

2

crwdns2931729:0crwdne2931729:0: Ndz 16, 2018

crwdns2933897:0crwdne2933897:0

What makes this a bit tricky is that the component labels on the board do not match the schematic. Can you post the numbers on the transistor to the left of the circled resistor in your picture? Also, what are the color bands on that resistor and the one next to it?

This portion of the board is for the front left channel of the amp. It looks like the outputs for that channel are shorted and causing the amp to go into “protect” mode. Can you test the transistors in that area for shorts? These should be numbered B1560 and D2390 (on the parts themselves). This is shorthand for the actual part numbers: 2SB1560 and 2SD2390.

With the transistor number requested, I can verify that I am at the correct point in the schematic.

Thanks,

Dan

crwdns2934105:0crwdne2934105:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0

crwdns2889612:0crwdne2889612:0 1

crwdns2947414:01crwdne2947414:0:

so I have the 531 as well and did the exact same thing so I van uninstall that peice and it will still work fine? please could really use the help I just bought this from craigslist and it has the same problem you just posted

crwdns2934271:0Sun 26, 2019crwdnd2934271:0 m.bujdoso87 crwdne2934271:0

crwdns2934285:0crwdne2934285:0