Phillips 42pfp5532d
got this philips plasma, turns on, screen lights up, and sort of flashes light and dark, there is a buzz from the Y=SUS that seems to be in time with the screen flashing, but no picture, power supply is putting out correct volts, any ideas before i strip it down ?
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Re: Phillips 42pfp5532d
Check the Zsus its likely to be causing the issue described, sounds like the Ysus is charging the panel but Zsus isnt working and not discharging the pixels there for no image.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: Phillips 42pfp5532d
Can you take pictures of the back of the set please and upload them. Dont throw it away either it could be something simple like failed ipm !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
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Re: Phillips 42pfp5532d
ok, did'nt think Z-SUS was the problem, as it is the little yellow transformer that is buzzing on Y-SUS, but i disconnected the Z-SUS but left the Y-SUS connected and tv turned on, with no buzzing from the Y-SUS, screen never lit up,
also there was some bad caps, 6 on the power board, that i have replaced, just to rule them out,
i have added picsAttached FilesComment
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Re: Phillips 42pfp5532d
have you tested any voltages ?Comment
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Re: Phillips 42pfp5532d
Right ok do you know how to test for S/C (short circuit) ?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
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Re: Phillips 42pfp5532d
just had a quick look at this for five mins, looks like Y-SUS is the prob, due to only having
-20/33 volts on VSC should be 100 i think, volts from power board are fine, dont think its worth spending money on, what do you think guys.Comment
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Re: Phillips 42pfp5532d
Are there Mosfets on the Ysus. May be worth checking out.Willing to help but I'm no expert.Comment
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Re: Phillips 42pfp5532d
quick update on this, i knocked it of the table, broke the screen, so now down the dumpComment
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Re: Phillips 42pfp5532d
Shucks!!!Comment
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Greetings all!
Originally this set had the usual messed up video symptoms such as: horizontal lines, weak, grainy video, bottom and top of picture differ in intensity of problem. It also seemed to slow to turn on or show the messed up picture.
Seemed like must be YScan/buffer board failure. Ordered buffer boards from my distributor which were supposed to be original/new and also from another distributor, I ordered the YSUS because I wanted to replace it for preventative maintenance. (also, the YSUS had a bulged cap, so there was even more reason to suspect it could... -
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... -
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... -
LG42PC3D -UD originally with green lamp but no display or audio.
Owner says was working, then went 'pop'.
All 5V caps bulging. replaced.
All PSU output voltages within spec but -Vy is low on YSUS.
One of three parallel fets between SUS_OUT and SUS_DN is zenering,
eventually shorts DG. Replaced all 3 - -Vy now OK.
Y scan buffer test point does not follow YSUS output below -50V
Note: This unit seems to expect YSUS output to park at -Vy in between
drive signal pattern periods. A replacement drive signal board confirms this....11-18-2021, 11:49 AM -
Phillips OLED TV 55P0S9002/05 715G8886-P01-000-004Y Schematic
Brand: Philips
MPN: 55POS900255
GTIN: 8718863012352...11-05-2024, 02:45 PM
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