Hi I have a 50" LG 50PN6500, I found next to my dumpster and took it in to find it powers on has sound but the picture is bad. Any signal on any input is showing up but in just rainbow pixels and blackness, so I opened it up pulled the y-sus and z-sus board and soldered most joints that I thought were suspect cold solder, it did not fix it. I'm currently at work but will attach pictures once i get home, there are no lines and no missing sections the entire display is doing this. I'm going to check the voltage and make sure they are at the correct levels also once i get home. Any input is greatly appreciated, i know i don't have pictures yet, but I think i was pretty descriptive. Pics in a few hours.
-
-
Re: LG 50PN6500 Rainbow pixels
Pictures are worth one million times more than your description fact. To me sounds like Xmain is failed but with out images I couldn't say.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/ -
Re: LG 50PN6500 Rainbow pixels
Thank you for the quick reply, I know the pictures are going to help alot, now the xmain is also referred to as z-sus sometimes correct?Comment
-
Re: LG 50PN6500 Rainbow pixels
Yes known as quite a few things, depends on the panel manufacture. Heres a few.
Lg: Ysus=Ysustain Xsus-=Xsustain
Samsung: Ysus=Ymain Xsus=Xmain
Pioneer: Ysus=Ydrive Xsus=Xdrive
Panasonic=: Ysus=SC Xsus=SS
Known as alot of things but does the same job.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
-
Re: LG 50PN6500 Rainbow pixels
Here is a couple pics of the screen...Attached FilesComment
-
-
Re: LG 50PN6500 Rainbow pixels
don't mind the cat
Comment
-
Re: LG 50PN6500 Rainbow pixels
Zsus for sure, possibly erc coils have broken solder joints. Re,ove the Zsus and inspect for broken solder joints.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
-
Re: LG 50PN6500 Rainbow pixels
Ok I will remove again and inspect, ive re-soldered most components on the board already but did not see anything right off the bat, thank you.Comment
-
Re: LG 50PN6500 Rainbow pixels
No worries if not you possibly have some shorted parts on the Zsus bud
Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
-
Re: LG 50PN6500 Rainbow pixels
Ive circled two components... are these the erc coils?Attached FilesComment
-
-
Re: LG 50PN6500 Rainbow pixels
Yes mate
Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
-
Re: LG 50PN6500 Rainbow pixels
Alright man, Thank you for your help.Comment
-
Re: LG 50PN6500 Rainbow pixels
So I have examined the coils solder joints, they are good, now if there are shorted components, is there any I should focus on? I see no scorch marks, caps are not swollen, everything visually checks out so I don't know where to start, any advice would be great but if it's not something that I can pin point I will just buy a replacement board since it's only $24.99Comment
-
Re: LG 50PN6500 Rainbow pixels
Ok what voltage do you get on the Ve test point on the Zsus ?Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
-
Re: LG 50PN6500 Rainbow pixels
Ok, Im not the best with these terms but the Ve test point? I can't find one cause I'm not sure what it is.... but I did take pictures of the pin outs, if these are the test points then great but I'm not sure where to test the voltage. Thanks in advanceAttached FilesComment
-
-
Hi it looks like everything works don't know where to test except the 390v in the 2 capacitor in the hot side of the power supply and the weird 180v in the diodes in the cold side that should be discharged it is writin on the circuit no more you can read what is written on the circuit quite srrange color mixiing yellow and white
anyhow i couldn't t read anything else
the backlight is on strong and the screen does not get dark or very dark but no pictures
the mainborad feels a bit hott on the black part i test it to 52 degree's against 34 to 40 on the rest of it
... -
The 55" LG has been in the basement for a few months without being used. Turned it on yesterday, set came on as it should and showed a complete screen for about 5 seconds (was on a broadcast channel but no antenna was connected), then the screen went mostly dark with about 1/3 of the screen on the right lighting up with brighter lines in that lit part (sorry, no pictures of that). Power LED was cycling too, preventing the TV from fully powering up.
Pulled the back off, all boards looked OK. Pulled the LED connector, turned the set on to see if it would power up but I don't belive it... -
Hello,
would someone kindly tell me if the TV panel has dead pixels problem?
I attached the photo, if you zoom it you can see the several dots...
Thanks in advance
Bad_IC... -
Recently my VT65 has started exhibiting sparking/misfiring pixels, it manifests as sparkling white pixels in the black area if there's brighter pixels in the same horizontal area (e.g. the smart viera boot screen, white credits on a black background).
On inspecting the screen closley you can see pixels misfiring in the upper area of the screen at all time, it just gets lost in normal content.
I've tried (without success) replacing the P/SS/SC board (refurbished boards) and re-calibrating the VSUS (including setting it to HIGH) but none has made a difference.
... -
Hi friends,
I am trying to take good quality pictures of rather large desktop motherboards for a project I'm working on. I had a brilliant idea of scanning them with a flatbed scanner I have but it only focuses on the bits of the board that are flush to the scanning glass. And the through hole components tend to lift the main board from the scanning glass. Everything else just looks out of focus. So it seems that that option wont run.
I have been capturing the images with my iPhone 11 and it's okay but wont capture the whole board. I have to grab it in sections and...
Comment