Silent Marshall AS50D Acoustic Amp

[Don P]

Have one, myself, and its the same description. No sound out, and lights up. Found the dual pushbutton switch on the right side of the front face of the amp, is defective. Mirrors, your same description. Now, looking for the part number to the switch, as it a dual pushbutton, (one piece, two switches stacked on top of each other) SW2

https://amprepairparts.com/marshallswitches.htm

[g1]

I then connected the line out jack to the external amp, and not only did I get sound, the reverb and Chorus circuitry works as expected. At this point, I've hit a dead end, and not sure what to try next, or what direction to turn to.

There is not much left. From the line out it goes to the master vol. pot, then on to the output IC (LM3886). Have you verified the speaker is good?
You will probably get more response if you start a new thread and describe the actual symptoms for your amp.

[Don P]

There is not much left. From the line out it goes to the master vol. pot, then on to the output IC (LM3886). Have you verified the speaker is good?
You will probably get more response if you start a new thread and describe the actual symptoms for your amp.

Ooops, yes, my omission... I did the "9V Battery"test on the speakers... TY, I guess I could start a new thread....