hi all, my first time here. I have a vizio p42hd plasma TV that came in dead. after i repaired the power supply, when plugged in and press the power switch, the z-sus heat sink would get warm but the y-sus would stay cold. testing showed blown fuse on the y-sus. all P.S. voltages were spot on so I replaced the y-sus. after replacing the y-sus, the tv will power on, with led going from amber to green, screen lights up for a few seconds then goes faint with no video, no graphics. now the z-sus and the y-sus heat sinks stay cold. all the voltages are still spot on. the service manual says to replace the graphics board, (which i have done 2 times), and if that doesn't correct the problem it is a bad panel. is the service manual right, even with a panel that lights up? I have checked the voltages on the power supply over and over, i have replaced the graphics board, the z-sus and y-sus and the left and right buffers. of course all the replacements were supposed to be from working tv's with damaged panels. I do not have a lot of experience with plasmas and i would like to know if a panel can light up with the z-sus and y-sus heat sinks remain cold and have a defective panel? i really could use any help anyone can offer. thank you in advance
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Hi all,
I am trying to fix my plasma TV which is not powering on due to damaged IGBTs. I have changed two igbts and 2 IC drivers on the zsus and also two igbts on the ysus.
Now everytime I plugged the ZSUS and the YSUS boards to the power board, the two 30f124 IGBT on the ZSUS are damaged and the TV stays in standby mode. When I plug the ZSUS board alone the TV turns ON but I do not see pictures. When I plug the ZSUS board without the two 30f124 IGBTs and the YSUS board, the TV powers on with a picture.
I am lost, should I change the YSUS board? Is the YSUS board damaging... -
vizio e650i-a2 (LWJAOZBP Serial) led backlight flashes then turns off, has video (via flashlight) and audio.
panel: au optronics T650HVN05.4
72 led total on 12 strips, 6 led per strip wired in three groups of 24 (led driver board has three anode and three cathode pins)
link to datasheet: https://datasheetspdf.com/pdf-file/8.../T650HVN05.4/1
Vizio 56.04219.641G (liteon PA-3231-01WN-LF) Power Supply Unit
https://www.shopjimmy.com/vizio-56-0...-power-supply/
Vizio 55.75J01.001G (91.75J10.004G) Main Board... -
Hi guys,
I post my problem here because I think it could be a capacitor related issue (Asus support on this particular subject is non-existing).
So the computer is a Zephyrus-S17-GX735LXS-26T and the strange behavior is seen.
On cold start most of the time the internal screen is detected and a picture it works fine until shutdown, sleep or deep sleep.
Then the screen won't work for a long period of time.
If I wait 1 or 2 hours it work again most of the time.
When it doesn't work the batterie indicator blink 3 times white stop and the same schematic is repeated... -
Make and Model: LG 60PB6650-UA
Issue: Turns on, no backlight, can hear static (no channel)
I've been repairing TVs for a couple years now. I know how to use a multimeter for the most part and know how to test most components for shorts.
The power board connects to the ZSUS and then connects to the YSUS. The ZSUS is where I believe the failure is because the 16v line is only 3.8V, even when I disconnect the ZSUS from the YSUS.
This particular model seems to have a common failure with its YSUS. My goal earlier was to prove the YSUS was bad so I could... -
Hello there,
I recently bought a Panasonic th-42px60en plasma TV second hand. The problem is :
The TV takes time to turn on from cold (being unplugged from the night for example), it tries to turn on with the clicking sound, then shuts off, then retries and so on. The TV is still working, just it takes time to boot.
From what I've read it seems to be bad capacitors on the power board, but I just want to see if anyone had the same problem with this TV.
Thanks in advance.
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