Amplifier TDA8954TH in protect

[yoppi]

Hello

I am trying to repair this amplifier. is in constant protection, but raises rail tension to + 33v and -33v. I have replaced the 2 TDA8954TH as a precaution, but still in protection.

Has anyone repaired this amplifier with similar problem?

 

[Perry Babin]

Find which output pin on IC2 on the PS board is going high and remove the diode that connects it to the PS driver IC.

That should allow you to test the audio section to see if something there is causing the amp to go into protect.

 

[yoppi]

I have removed circuit D9 and D2, but the problem continues .....

 

[Perry Babin]

If the protect LED is on, follow it back to the PS board and see what's driving it. Work backwards from that to see what's driving the protection circuit on.