|
hi guys.
I followed the recommendation of electronic m and replaced all electrolytic. One of them C2 under sams and 124 under rca and it did not have marking of what and where. I took one hour to find out what and where. Replaced all the rectifiers. jump the thermistor and it trip the breaker again. the hum is not as severe as before but it comes from the transformer.
I have a spare chassis, for parts, but changing the main transformer knowing that this one pushes about 330 volts with thermistor disconnected is like going fishing. schematic states 320vac and 7.7 ohms. there is another winding (255v) that goes to the sweep board. tomorrow I will check voltage in that area.
I guess from here if to get a variac and see where that take me.
any other part of the chassis that could trip the breaker, such as the other transformers.
|