LG 34UM59 white “washed out” image

[occhia]

Re: LG 34UM59 white “washed out” image

Ok understood.. thanks a lot for the reply.
Do you mean the “SW0686” chip, correct?

Can I do something like this?
https://youtu.be/eA1qsnRuS_Q

[Davi.p]

Re: LG 34UM59 white “washed out” image

Sorry i've noticed now there's another chip, it's U51 i think

[occhia]

Re: LG 34UM59 white “washed out” image

Sorry i've noticed now there's another chip, it's U51 i think

Ok thank you, compatriot!
So, you suggest to try reflowing the RT6811 chip with Heathgun and see what happens?
And.. so, this is the DC-DC and gamma ic chip? I'm just asking to learn..

Thanks!

[Davi.p]

Re: LG 34UM59 white “washed out” image

I'm not really sure what it is but i think is a pmic+gamma chip, but just to be sure, on the leftmost i see those gamma testpoint named like V12,V8.. etc, check with dmm to which chip are connected.

[Davi.p]

Re: LG 34UM59 white “washed out” image

take the multimeter sat in continuity (beep), then place one probe on the test point the other on one of the two chips, if it beebs theme are connected.

[occhia]

Re: LG 34UM59 white “washed out” image

take the multimeter sat in continuity (beep), then place one probe on the test point the other on one of the two chips, if it beebs theme are connected.

Ok this evening I will check and post updates.
Thanks a lot, really.

[occhia]

Re: LG 34UM59 white “washed out” image

Hello everyone!
I did some testing.
For the continuity test between those points (from V1 to V14) some of them show continuity with some pins of the RT6811 chip (marked as U51 on the board). These point are V3/4/5 and 10/11/12. The other points do not beep with no one of the pins of that chip.
I also tried the voltages on those points and they all have tensions, decreasing gradually from about 11v to 1v (V1=11v, V2= 10.5v, V3=9.7v and so on..)

Thanks for help.

[occhia]

Re: LG 34UM59 white “washed out” image

No one has some suggestions?