kapton tape on capacitors next to heatshield

[Logon]

Call it curiosity.

I perfectly understand you!
For unstoppable curiosity I destroyed disassembling it and no longer succeeding in rebuilt it more than a device.
Just as an example, I do not know if you remember a MP3 Player named COWON D2+, well just for my curiosity in experimenting then I "had" re-bought 3 units... 😀

 

[DozyProduction]

At least it was a great "learning experience"! 😉 the approach will to be keep it simple stupid and hopefully not burn anything out lol.

 

[wolf_teeth]

I am going to say carefully that this is an Ali product, so there could be issues. At the same time, this is a Class D board because it has output filter chokes, and the chip is not supposed to make much heat in the first place.
YMMV

 

[Logon]

Good point. 👍

However, I don't know why, but IME FWIW if Class D sounds at high volume it remains cold, if in idle then it warms... 🙄