Hi yall. I have a bit of a problem with my lg 50pk540. It powers up and atays on but this mess is all i get instead of a picture. I hope the pic i attached shows up. Thanks in advance for any help.
Attached Files
-
-
Re: Little help with lg plasma 50pk540 please?
Looks like multiple problems starting with lower buffer board or whacked ysus. -
Re: Little help with lg plasma 50pk540 please?
If its multiple problems but still powers up, Could that be a lightning hit? Or one of the kids knocking the tv over and not telling me? With the power board good should i start replacing the other boards or just sell the power board and junk the rest?Comment
-
Re: Little help with lg plasma 50pk540 please?
Here is a second pic if that helps any.Attached FilesComment
-
-
Re: Little help with lg plasma 50pk540 please?
Whats been done to set between the first and second picture...?TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!Comment
-
Re: Little help with lg plasma 50pk540 please?
The up and down blur follows where the lg logo bounces around the screen. The wole screen blur is when i hit any button and the lg screen saver goes away.Comment
-
Re: Little help with lg plasma 50pk540 please?
I've seen something similar on another lg plasma. It was the mosfets on the buffer boards. Post pics of each board inside your set.Comment
-
Re: Little help with lg plasma 50pk540 please?
2Attached FilesComment
-
-
Re: Little help with lg plasma 50pk540 please?
3Attached FilesComment
-
-
Re: Little help with lg plasma 50pk540 please?
Im not seeing any out of place on the boards.Attached FilesComment
-
-
Re: Little help with lg plasma 50pk540 please?
On picture 3
You see 2 resistors marked -Vy and vsc.
Please measure across this resistors and post the voltage.Comment
-
Re: Little help with lg plasma 50pk540 please?
I will as soon as a get back home. Thanks.Comment
-
Saved this beast from the landfill this weekend.
Manfactured July 2013 in Mexico.
I love working on plasma TVs.
Its been a while but I was lucky enough to find 2 this week.
The TV powers on and stays on but no picture. Havent checked for sound yet.
No bulging caps although the insides are pretty dusty and the boards are discolored from many years of high heat.
Will start troubleshooting tonight.
... -
Hey guys, I recently acquired a Hitachi 55HDX99 plasma TV that doesn't work. The TV powers on and eventually goes into standby which is indicated by the blue power led changing to orange. If I plug a VCR into it to keep it awake, I can feed an audio source in and it will play the sound no problem. The volume controls on the TV work as well so it is obviously just a display problem.
I found the Hitachi service manual online which is also hosted on tom66's manual archive. Compared to the Panasonic service manual I had for the last plasma I worked on, this one is underwhelming to say... -
Hello all,
I'm stumped on this guy, so wanted to see if anyone has any further ideas:
Intro:
This is an Acer Nitro 5 AN515-55-55M1 with unknown prior history (bought "as-is" on eBay). It charges the battery and powers on from both AC adapter and battery, so I think this rules out main power issues.
Upon attempt to boot, it will "reboot" (meaning powers down and then powers on again) only once, and then stays stuck in a status of lights on / no post / no monitor. Powering on with fn+esc maxes out the fans on first boot attempt,... -
Powers on as normal shows an image then powers off after 10 seconds
I have to unplug it from the wall and replug to get it to turn back on but then shuts off
No blown caps
I searched for this model but nothing comes up...11-29-2024, 11:21 PM -
Hello,
I am having Samsung PS51E550 Plasma TV. While the TV was working, a crackling sound heard & video went off with audio still ON. After switching it off & ON, the red LED on TV blinks six times & then off.
Opened TV cover & observed foll
a) Green LED on the small PCB blinks at @5-6sec ON & off for 3-4 secs. Red LED on logic board ON
b)Vs & Va on power supply board raises momentarily to 209v & 58v resp & then drops.
c) Cold test on Y-main board shows all 3 pins of FGPF4536 IGBT short to Grnd.
How to confirm Y -Buffer board...
Comment