Need Help with a LG 37LC7D

[landyboy]

I picked up a LG 37LC7d that wont turn on green light just blinks. Doing a little preliminary testing I do not think I am getting the 3.3 voltage feed. The pin designated as 3.3 is testing 0 vdc. On the bottom of the PS Board I found a Mosfet that both leads circled test 0 ohms to ground. Is this a normal situation?

[landyboy]

Re: Need Help with a LG 37LC7D

Please ignore the bad solder work on the replaced caps It was not mine...

[tom66]

Re: Need Help with a LG 37LC7D

Remove the MOSFET to confirm it is shorted. Upper one may need replacement too if it is open.

[martyparish]

Re: Need Help with a LG 37LC7D

What year is this TV? If it's 2007, check out the attached PDF. It actually helped me repair a 42LC7D and I'm fairly sure it would aply to yours if it's 2007.

[landyboy]

Re: Need Help with a LG 37LC7D

Thanks, I looked at the reference and my board has two HDMI ports. Are the coils located on the PS board or the main?

[truep]

Re: Need Help with a LG 37LC7D

main I believe.

[martyparish]

Re: Need Help with a LG 37LC7D

Yes, on the main board. On mine, there were a few near the connector from the PSU and there were more near the HDMI I believe. For me, it was the ones near the connector that fixed the problem.

It's a tricky little job, at least it was for me! I had one jumper shorted out and had almost given up then saw it and corrected it and boom, TV working perfect. Ended up giving it to my mother.