Seeking ideas for Technics SU-V460 with a blown SVI3205 power amplifier module...

[kapitiaudio]

I've got a Technics SU-V460 with a shorted SVI3205 power amplifier module.

I was just wondering if anybody has any bright ideas on how it could be brought back to life?

Has anybody been able to crack open this module and repair it using normal parts?

Unfortunately, the B+ lines seem a bit high (+/-45.5V) to substitute with an LM3886 or similar board.

Please see schematic below... any ideas welcome.

Thanks,

 

[Kay Pirinha]

The TDA7293 chip can handle supply voltages this high.

Best regards!

 

[kapitiaudio]

Thanks for the tip,I'll look into it.

 

[Kay Pirinha]

Yes. But be aware the NFB loop in this gear isn't a textbook one 😉 .

Good luck!