Fender FM15DSP no output

[ca7922303]

There is no sound at all, headphones do not work.Can you tell me what location of pin#1 you are referring to and could you describe how to test Q1 & Q3? Thanks fir your help.

[ca7922303]

What I mean by location is, for example P11.

[Enzo]

The power amp pin 1 I referred to is pin 1 on the five legged power amp IC.

[ca7922303]

Also, checked with known good speaker.

[ca7922303]

Appreciate your help. I'm assuming pinout is left to right 1-5 but I will look up data sheet.

[vintagekiki]

Better find a qualified repair service center in your area.

[ca7922303]

Wondering if I connect L in to L out on P11, will I be able to bypass dsp with connecting R in to R out(which I don't see on P11)?

[ca7922303]

Meant without connecting R in to R out*

[g1]

I think if you connect (jumper) the L in to the L out, it should do the bypass. Can't hurt to try.

[vintagekiki]

There is no sound at all, headphones do not work.Can you tell me what location of pin#1 you are referring to and could you describe how to test Q1 & Q3? Thanks fir your help.

I assume that checked ⁺/_- 15V and ⁺/_- 22V voltages, and that speaker is connected to ⁺/_- SPKR (_- SPKR is not gnd).
Before any test, check that power amp TDA2050 works by connecting the test signal (50mV and more) to J1 (Aux In).
With this test you check the correctness of U2A, U1A, U1B, TDA2050 and jack J2.

[ca7922303]

Responding to G1s #24 post, I was about to jumper L in to L out on P11 and see that there is a L out + and a L out -. What would you suggest I jump L in to? Thanks fir your help.

[g1]

Responding to G1s #24 post, I was about to jumper L in to L out on P11 and see that there is a L out + and a L out -. What would you suggest I jump L in to? Thanks fir your help.

Lout+

[ca7922303]

Jumping L in to L out + didn't produce any output.

[vintagekiki]

And what schematic say?