Audio Gods 4 channel amp in protect

[chrisg4]

Hi all,

I have the below amplifier in protection. I narrowed it down to a shorted transistor. there are no markings on the transistors. What can I use as replacements?

 

[chrisg4]

Update: Transistors are 2SA1941 & 2SC5198

 

[Perry Babin]

Look at the FJA4213 and FJA4313

 

[chrisg4]

Thanks Perry

 

[Osvaldo de Banfield]

Which transistor(s) are bad: voltage booster or audio output?

 

[chrisg4]

Audio output (2SA1941) was bad.

 

[Osvaldo de Banfield]

And the previous one? Diodes and resistors around it?

 

[chrisg4]

Didn't find anything else shorted in that area, replacing the pair of transistors returned the amp to normal operation

 

[Osvaldo de Banfield]

And it continues in alarm state?

 

[chrisg4]

No, it is working normally.