Planet Audio TQ1601D

[S Merlington]

Amp powers up Relays enguage I get both + - rail and regualted voltages..

But i get no output..

Any ideas where to start ?

 

[Perry Babin]

Post a photo of the board.

 

[S Merlington]

Heres a couple of pics of the board

 

[Perry Babin]

Do you have rail-rail oscillation on the output transistors?

 

[S Merlington]

No

 

[Perry Babin]

I quit working on the amps like this and the one that uses another potted module because the modules seem to be the first things to fail. I can't say with 100% certainty that the modules are the problem but I could not find any other faults.

I'm assuming that you've checked the outputs and none have failed.

 

[S Merlington]

All outputs text fine in the amp none have failed..

There isnt a muting transistor in this amp is there??

All i see is Q9 (J108)

Q7 (2N3904) that sits right behind the black box