Hello,
I'm trying to repair a Kenwood micro hifi system, but I'm facing some issues.
EDIT: I forgot to write that the I am trying to repair the system, because I would turn it on and after a few seconds it would shut down by itself.
In order to isolate the problem, and since everything's ok with the board marked with the green square, I'm powering the transformer, marked with the red square, directly. (pict1)
What happens, and I can't understand the circumstances, sometimes instead of reading the values marked with the red circles, I get 0V and the point next to D8 is shorted to Ground. (pict2)
What could be the issue?
Thank you.
Kind regards,
Marco