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First One - mosFET amplifier module

Nothing really much you can do now, there's full bunch of SMD parts on bottom of PCB. TP1-TP2 mV adjustment should be trivial, can not imagine how a spark came into equation. Was multimeter set to A instead mV?

I consider myself experienced in this regard but I always approach to setup adjustments with max caution.

Did you like the sound in that 20 hours session or it was just powered without the signal?

Multimeter was set to voltage I am very sure. R 35 10 ohm and T 16 is blown. Can I buy thoose from you? Or is it better to send it back for repair?
 
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3,9 kohm resistors to measure at the open end for improved security. I solder the leads for the multimeter to the end. Hope Lazy Cat will forgive me.
 

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