LG 60LB5200 will not turn on

[budm]

Re: LG 60LB5200 will not turn on

The picture in post #5 is the back of my board. I can take a picture of the front, if you would like. However, I'm thinking CMS has covered both sides and the back of the TV.

It is odd that it looks as if the EN pin is not actually connected to anything.

Yep, something is not making sense right now since EN trace on the power supply board is connected to anything, unless the power supply board has detection circuit that turns the power supply fully on when heavy load is detected.

[WTRWLKR]

Re: LG 60LB5200 will not turn on

As far as I can tell, the EN signal is not used. Following the traces on the back, there is no R7, Q1, C8, or R10.

Looks like they must have made some revisions to the original circuit.

[WTRWLKR]

Re: LG 60LB5200 will not turn on

There is reference to the power supply diagram (FA 168P-P5L031-W1.pdf) at this site but I'm hesitant to join up.

I joined the site. You cannot download files unless you pay for a premium membership or have a minimum of 250 posts... LOL

[WTRWLKR]

Re: LG 60LB5200 will not turn on

On the flip side, it looks like some places are beginning to stock the replacement board again. I see it for as low as $66.32 on Amazon https://www.amazon.com/s/ref=nb_sb_n...ds=COV32809701

[CMS]

Re: LG 60LB5200 will not turn on

Ordered the board. I will let you know as soon as it's installed. Cross your fingers.

[WTRWLKR]

Re: LG 60LB5200 will not turn on

I bought one a couple weeks ago (before I saw them on Amazon and other sites). Paid a bit more as well.. Now i just need to find time to install it.

[dinko87]

Re: LG 60LB5200 will not turn on

Hey guys, yes please let us know if the power board fixes the problem. Thanks

[CMS]

Re: LG 60LB5200 will not turn on

It worked. Thank you everyone for the help. Now, since I already replaced this TV... What do I do with an extra 60” TV???

[budm]

Re: LG 60LB5200 will not turn on

It worked. Thank you everyone for the help. Now, since I already replaced this TV... What do I do with an extra 60” TV???

Can you please provide the Voltage readings of this new working board so we will have that as future reference?

[dinko87]

Re: LG 60LB5200 will not turn on

Anything on this?

[dinko87]

Re: LG 60LB5200 will not turn on

Any feedback?

[11alon11@gmail.com]

Any feedback?

Hi
I am sorry to bother you but I do have a COV32809701 power supply with the same issue of low voltage on the 12v = 6.95V 24v = 15.64V and Both of the large caps are 163.2 VDC. I did replace d12 and checked other diodes and transistors with no help. it look as if tis is a common issue with the COV32809701 power supply. any suggestion.
thank you and I really appreciate your help.
Joshua

[11alon11@gmail.com]

Can you please provide the Voltage readings of this new working board so we will have that as future reference?

Hi
I am sorry to bother you but I do have a COV32809701 power supply with the same issue of low voltage on the 12v = 6.95V 24v = 15.64V and Both of the large caps are 163.2 VDC. I did replace d12 and checked other diodes and transistors with no help. it look as if tis is a common issue with the COV32809701 power supply. any suggestion.
thank you and I really appreciate your help.
Joshua

[tvfixer007]

Re: LG 60LB5200 will not turn on

Has anyone successfully repaired the power supply to this TV yet? I just acquired this same model TV with the green standby light flickering.

[Unspun01]

Re: LG 60LB5200 will not turn on

I'm repairing this power supply right now. My parts have not yet arrived so I have no progress yet. I will update with my story when I get them.

[tvfixer007]

Re: LG 60LB5200 will not turn on

I'm repairing this power supply right now. My parts have not yet arrived so I have no progress yet. I will update with my story when I get them.

Any luck? All this time and I got nowhere.

[Unspun01]

Re: LG 60LB5200 will not turn on

No parts yet. Hopefully soon as I am also tired of waiting...lol. ..I'll report back when they arrive

[tvfixer007]

Re: LG 60LB5200 will not turn on

I replaced the power supply since I found one for $35. The TV is alive again!

[Unspun01]

Re: LG 60LB5200 will not turn on

I still haven't received my parts. F@cking China... ughhh

[tvfixer007]

Re: LG 60LB5200 will not turn on

Yikes! I'll keep checking back here as I still want to repair my broken PSU. I got a good board to work off of but my multimeter crapped out.