Hi there!
I'm new here so I hope I'm posting this in the right place. I have a MacAudio Car audio amplifier z4100 which I'm trying to fix.
It seams I have high voltage coming from Protect signal to TL494 IC controller , turning the overload red led ON. There isn't audio at any of the outputs.
There are some set of transistors (C5198 & A1941 pairs) getting extremelly hot together with their 5W ceramic resistance. (mainly Channel 3 and 4)
I uploaded some Schematics thet I found of z4200 model which is quite similar. The marks in red were not done by me. So, it doesn't refer to my problem.
Any help will be appreciated!
Thanks!
I'm new here so I hope I'm posting this in the right place. I have a MacAudio Car audio amplifier z4100 which I'm trying to fix.
It seams I have high voltage coming from Protect signal to TL494 IC controller , turning the overload red led ON. There isn't audio at any of the outputs.
There are some set of transistors (C5198 & A1941 pairs) getting extremelly hot together with their 5W ceramic resistance. (mainly Channel 3 and 4)
I uploaded some Schematics thet I found of z4200 model which is quite similar. The marks in red were not done by me. So, it doesn't refer to my problem.
Any help will be appreciated!
Thanks!
