I took out both big filter capacitors, and turned ON the receiver. (Relay also clicked in).
I repeat this test, and same scenario.
Still vibration noise, and still AC exists T test point #4 and not in test point #3.
Although its very small and simple circuit, i can't see what can be the cause.
Maybe one of the ceramic capacitors?
Ive checked them for short (on l-board) and they are'nt.
Ive tested the big filter caps out of the board.
First for short, they are not.
Then i measured them for capacitance, One of them showed 6600uf, the other 6200uf.
Later Ive charged both of them with external dc voltage supplier, and they both keep it and value go down slowly while measuring with dmm.
What do you think?
Thanks a lot
I repeat this test, and same scenario.
Still vibration noise, and still AC exists T test point #4 and not in test point #3.
Although its very small and simple circuit, i can't see what can be the cause.
Maybe one of the ceramic capacitors?
Ive checked them for short (on l-board) and they are'nt.
Ive tested the big filter caps out of the board.
First for short, they are not.
Then i measured them for capacitance, One of them showed 6600uf, the other 6200uf.
Later Ive charged both of them with external dc voltage supplier, and they both keep it and value go down slowly while measuring with dmm.
What do you think?
Thanks a lot