Board EAX36781601A-F
I'll buy a board if I can find one.
This is my own set, so I don't want to give up on it.
It failed while unattended. Hot smell and dead.
The two big caps were bad. Low value/ high esr.
Inverter MOSFETS shorted.
PS MOSFETS shorted.
4 diode packs shorted.
After that set would run but PS MOSFET and Transformer ran hot.
Quit completely after overheating.
Last thing I found was 3 1uf/50 volt caps bad. Weird as they were all different brands.
After that set and back light will come on for 2 sec when cold.
PS output reaches about half voltage and shuts down.
I don't have a way to ring transformer. Nor do I suspect it. Looks ok?
Next step if I don't get help from someone, is find data on PS chip and try to figure out what keeps voltage down. Zener bad ?
Any ideas?
I'll buy a board if I can find one.
This is my own set, so I don't want to give up on it.
It failed while unattended. Hot smell and dead.
The two big caps were bad. Low value/ high esr.
Inverter MOSFETS shorted.
PS MOSFETS shorted.
4 diode packs shorted.
After that set would run but PS MOSFET and Transformer ran hot.
Quit completely after overheating.
Last thing I found was 3 1uf/50 volt caps bad. Weird as they were all different brands.
After that set and back light will come on for 2 sec when cold.
PS output reaches about half voltage and shuts down.
I don't have a way to ring transformer. Nor do I suspect it. Looks ok?
Next step if I don't get help from someone, is find data on PS chip and try to figure out what keeps voltage down. Zener bad ?
Any ideas?