Sharp LC-32SB24U- SHUTS down on start up-

[jackslater]

Hi all,

Pick nice new sharp TV - like try fix


Sharp LC-32SB24U- SHUTS DOWN on start up-

Green blinking lights- two power , one opc -( something like that )

If i use the protection override - tv start - works plays fine-
I can turn off and on once.
- Second time goes back into protection.



with back off -
all bulbs seem to be light and working

Have all 3, 5 12 volts on rail -

pictures coming in next day

part #
Power Supply/Back light Inverter <- single board
RUNTKA448WJQZ
sub RUNTKA397WJQZ

I heard sharp has lots problems with ccfl - Can be tested power off with DVM , if so how ?

I think voltage to ccfl may low or high - causing shutdown - first thought

I have re soldier the Power Supply/Back light Inverter- No change : (

* I would rap on tv and would come on- but very rarely would work do that - like bad solider joints *

If i use the factory protection override button pushes - TV start - works plays fine-I can turn off and right back on once.

- Second time goes back into protection.