Repair of KUSTOM KBA 100 Bass Guitar Amplifier TDA7293 100W

Kustom KBA 100 fix.
Transformer and TDA7293 IC Audio Power Amplifier  Replacement.

My PCB GY50 Evolution Power Hybrid Amplifier

Here my new circuit boards about Aloia's amplifier GY50.

Making of Audio Projects Testing Dedicated Power Supply

I'm working around board assembly.

Positive rail is ok, negative has to be tested ...I hope it'll be ok!!!

Linear Variable Output Voltage from 3V to 50V, Input voltage Max 60Vdc