Hi,
I've been given a non working Stanmore JN3018 loudspeaker.
The power supply part works normally, I have all voltages on all chips. But no sound is coming out.

I tried to track the audio signal from the inputs to the loudspeaker.
Unfortunately, it's not easy, as most signals are PWM. But the analog part is working, and I can track the PWM at the inputs of the TAS5508c.
At the TAS5508c output, I only have pulses which I can find on the input of the final amplifier TAS5342a.

Can somebody help me to resolve this problem ?
Thanks

Hi,
Being a radioamateur since 1976, building a lot of equipments, antennas, etc...
Found your forums while searching some infos to repair a Marshall Stanmore JN3018.
I hope to find some help...​

Hi,
Being a radioamateur since 1976, building a lot of equipments, antennas, etc...
Found your forums while searching some infos to repair a Marshall Stanmore JN3018.
I hope to find some help...