Yamaha HS80M AMP-CN603

Hello,

I have some issues with my lovely Yamaha HS80M Speaker. When I power it on, there is no sound. The heat exchanger gets hot within minutes. When I power it off, the big woofer pops a lot. (The issue seems to be nearly identical to https://www.diyaudio.com/forums/multi-way/341630-fix-yamaha-hs80m.html)


I disassembled the speaker. I did not find any issues, besides the amplifier board. Here is an image of the amplifier board:

WeTransfer


I asked Yamaha for support, but they replied, there would be no option to buy the components, but the whole board for nearly 200$, which I find pretty annoying.

Please let me know, wheter I can repair the board and what I need to do for repair:

Which tools do I need?
Which components do I need to buy?
Where to buy them?

What do I have to do for repair?


I have very, very basic electrical and no soldering skills, but I am willing to learn.



Thank you for your time.