Bush LCD42F1080P

[dick_barton]

Hi,
I have a power supply from this set which has the 3.3v missing. I've replaced the psu since I could not read the IC's that were damaged which were on the 3.3v line but was able to identify their part numbers when the replacement board arrived.

The two IC's have been replaced but I still don't have the 3.3V supply.
To test the other supply voltages I tied 5Vs pin to ON pin. (connector P201)
Do you have to do something similar to switch on the 3.3V supply.

Power supply board number is 6709900016C which I believe is also used in the Wharedale 42F1080P set.

The testing has been done with the power supply on the bench and all cables removed except for the power cord and the one jumper mentioned above.

If the circuit diagram is available then better still.
Thanks

[ReeceyBurger123]

Re: Bush LCD42F1080P

Firstly thats not the psu that comes with this tv in the picture !

[ReeceyBurger123]

Re: Bush LCD42F1080P

The supply should be a 17pw16 for the model tv.

[dick_barton]

Re: Bush LCD42F1080P

Hello ReeceyBurger123,
Thanks for pointing out my error. My fault in that I labelled the power supply incorrectly before putting it away. The picture is of the power supply I'm attempting to fix and on double checking it came out of an LG37LB1DB-EC set and not a Bush as I original stated.
Thanks for pointing it out for me.
Again if anyone has the schematic for the supply and would be willing to share I would appreciate it.
Regards

[ReeceyBurger123]

Re: Bush LCD42F1080P

No problem haha we all make mistakes. I will see if I can get a schematic for you

[dick_barton]

Re: Bush LCD42F1080P

Thanks.

[ReeceyBurger123]

Re: Bush LCD42F1080P

Hmm cant seem to find one for the psu, however I do remember there was a tread about this psu with the exact same issue as you have so will see if I can find it.