When I turn on it is a big pop in the loudspeakers.
After this there is only silence.
The LEDs are lighting and the power on button works.
Everything works except for the complete silence.
After this there is only silence.
The LEDs are lighting and the power on button works.
Everything works except for the complete silence.
A non simulated real life error! Start by measuring the voltages of the PSUs. Also check if the loudspeaker relay comes up and what the voltage before that relay is.
@avtech
I am sure you are right.
The bop at turn on indicates DC on the output.
But now there is not even a bop.
Now it is all silent.
I think one output transistor blow. This caused the strong bop in the loudspeaker.
Now there is no more sounds.
Except for the relay turning on.
I took away the cord for the supply from the wall outlet.
Now it is possible to open amp and have a look.
But I save this for another day.
What is strange is that both channels seem to be gone.
If it was only one transistor that blow.
I am sure you are right.
The bop at turn on indicates DC on the output.
But now there is not even a bop.
Now it is all silent.
I think one output transistor blow. This caused the strong bop in the loudspeaker.
Now there is no more sounds.
Except for the relay turning on.
I took away the cord for the supply from the wall outlet.
Now it is possible to open amp and have a look.
But I save this for another day.
What is strange is that both channels seem to be gone.
If it was only one transistor that blow.
@jean-paul
What I did.
1. Opened up the amplifier without plugging it in.
2. Touched a few cables. For example the positive and negative supple connection
3. I powered on
4. Amplifier magically started playing again !!!!!!
5. I replaced the cover - but without screwing it in place
Let us see for how long it will play.
I am prepared to see it fail again. I no longer trust it 🙁
What I did.
1. Opened up the amplifier without plugging it in.
2. Touched a few cables. For example the positive and negative supple connection
3. I powered on
4. Amplifier magically started playing again !!!!!!
5. I replaced the cover - but without screwing it in place
Let us see for how long it will play.
I am prepared to see it fail again. I no longer trust it 🙁
Prepared to see it fail again? What about repairing it before semis to south?
Not repairing by touching but actual measuring and diagnosing. Certainly a better approach when you don’t trust it anymore.
Please make some pictures of both sides of the PCB.
Not repairing by touching but actual measuring and diagnosing. Certainly a better approach when you don’t trust it anymore.
Please make some pictures of both sides of the PCB.
I cant repair it.
It is so crowded and most points are sitting under the big PCB.
The problem is/was loose cables. When I sqeezed them into place it works.
It is so crowded and most points are sitting under the big PCB.
The problem is/was loose cables. When I sqeezed them into place it works.
