I've been working through an issue with my 42"LG. The initial symptom was that I had lost the picture but still had sound. I jumped on this forum and with some searching it looked like a Y or ZSUS board issue. I found an open fuse on the YSUS board but all looked good on the ZSUS. My other observation was that I got a sag in Vs (168Vdc) just before shutdown. I checked the power supply outputs and all were spot on otherwise. I sent the suspect board to Coppell for repair, but after re installation the same symptom remained. At this point I ordered a ZSUS board from Coppell and a buffer board. So long story short after installing these components still have the same issue. So now I'm looking at the control board and have made a few observations. First, if I disconnect the input to the control board the set will remain on with a white screen and a normal Vs of 186Vdc (per sticker on chassis). Also I noticed that there are four LEDS marked D12 through 15. All are solid green except D15 which is not lit. Is this normal or am I looking at a bad board. Any input from you guys would be appreciated. Warren
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Re: LG 42PC3D control board issue
Anyone have experience with this issue in particular normal state of LED's D11-15 on the control board? Thanks, Warren -
Re: LG 42PC3D control board issue
Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problemComment
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Re: LG 42PC3D control board issue
Will do. ThanksComment
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Hi everyone,
I am trying to fix a samsung washinmachine power supply main board.
I already replaced it with another one to fix the machine but i want to try understand the issue with the old board.
Therefore i hope to be able to get some help to explain what to check in order to troubleshoot.
The power supply board reference is the following: DC41-00189a
I have followed one thread (https://www.badcaps.net/forum/troubl...ingmachine-rel... -
Hi everyone,
Im looking for some advice regarding my Samsung UE55MU8000 TV with main board model BN94-11606C. The TV suddenly stopped turning on and now shows no signs of life at all not even the standby light at the bottom.
Initially, I suspected an issue with the PSU, so I took it to a repair center. They tested it and confirmed that the PSU works perfectly, even on other TVs. Based on that, I started investigating the main board.
I disconnected the main board from the PSU, and the backlight turned on, which seems to confirm the main board is the issue.... -
Customer plugged in samsung monitor into the board and used it as a power supply, killed UG800 and UG400. I replaced those two with an exact donor board we had In stock and working, board pulls 5volts and then gets like 2.89 amps on the left side. The singular port is the port that failed. Used a perfectly working chips from donor (board was locked) Now I only get 5volts 0 amps on that power and then 20volts 0 amps on the two left side ports, I checked for DFU and nope nothing, computer not turning on. No shorts present anymore. I am confused as I used the exact components from an identical...
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Customer plugged in samsung monitor into the board and used it as a power supply, killed UG800 and UG400. I replaced those two with an exact donor board we had In stock and working, board pulls 5volts and then gets like 2.89 amps on the left side. The singular port is the port that failed. Used a perfectly working chips from donor (board was locked) Now I only get 5volts 0 amps on that power and then 20volts 0 amps on the two left side ports, I checked for DFU and nope nothing, computer not turning on. No shorts present anymore. I am confused as I used the exact components from an identical...09-10-2025, 03:15 PM
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming...
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