Logic 3000D blown caps

I have trouble finding the fault of this amplifier all the good and source output transistors, I have audio at the output but at idle without any loudspeaker or RCA I have +47 and -47 but I intrudusco a signal in RCA and I raise gain and voltage - It starts to rise and arrives until 80v and it is protected, I guess that is why the capacitors were blown, it has 63v 1000uf already checked drive and change all the double pre amplifiers I have +15 and -15, does anyone have any idea what it will be?

The low-side drivers are likely defective. This generally just causes the negative rail caps to fail. On this board, I think they are Q35 and Q36. They are MPSA42.

To upload photos click the following:

Go Advanced
Manage Attachments

Repeat as necessary

Preview post to see how the post will look.

Click Submit Reply to send it to the forum.