Yamaha AV Receiver No/Low Sound Repair. Not sure what has happened to this amp? | UK eBay Reseller

Trying to fix this Yamaha natural sound AV receiver RX-V620RDS I pick up from auction for £5. No one was bidding on this amplifier so I just click the Bid button and won this for £5. When I tested it there was no sound but you could just about here it when the volume was fully turned up.
Let's get this apart and see if we can see what's wrong with it and repair this amplifier.
Items I use:
IPA Isopropyl Alcohol - amzn.to/3j1PupR
Preciva 8786D 2-in-1 Hot Air Gun Rework and Soldering Iron Station - amzn.to/2ZI4bFQ
Perciva Soldering Mat - amzn.to/3dEMcIC
Soldering Iron Tip Cleaner - amzn.to/3dGxJvO
Magnifying Glasses - amzn.to/3r3UkGH
120pc Drive Belt Pack - amzn.to/3kWH0ld
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[@darrenrayner583]

Another interesting and informative upload so I thank you kind sir!

[@twintellect]

Great video on a small workbench.
Couldn't you glue the board and restore it's shape with some epoxy like material? What glue can one use for printed circuits?
Your solution was spot on by anyhow.

[@RetroElectronicRepair]

You could probably use some epoxy resin but it would probably just break off again.

[@tej262]

Bro teac 8800 av receiver only front lift right chanels not sound bro centre back sorrounding is good work but problem??? Plzz reply

[@RetroElectronicRepair]

Sorry, impossible to tell you what is wrong. Possibly a blown output transistor on that channel

[@thebaldconvict]

I have one similar to this, a 520 rds, I suspect the model down and I wonder if that front panel has been off before not because of that damage but due to another fault and that was caused while fixing the other issue?
So on these they use a capacitor on the display panel to help them remember all the settings like rear delay, rear volume levels etc (You need a remote for these) and that capacitor dries out and leaks. I swapped mine out which means rmoving all those cables and the large board in the front panel.
I wonder if somebody hamfisted has tried and failed?
Anyway, I hope that helps

[@RetroElectronicRepair]

Thank you for the comment, that's some useful information to know. 👍

[@chemskiesukvol.2covid19isbs]

Got a Yamaha RX-V373