hi all i have an lg42le4500 tv will turn on and have picture and sound but sometimes picture goes black but still have sound.if i disconnect the tv from power source the longer i leave it the longer it stays on next time i turn it on, any help would be appreciated
-
-
Re: lg42le4500 screen issue
This model uses edge lit technology. Doubt it's an LED issue. More or less a mainboard issue. Very common BGA separation under main processor.
Do you still have backlights when picture goes out?Did I leave the soldering iron on?Comment
-
Re: lg42le4500 screen issue
If there is no backlights then if the TV is staying on long enough for you to go into OSD USER Menu setup and turn down the backlights level to as low as you can and then see if the backlights will stay on longer or not.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: lg42le4500 screen issue
thanks for the reply,do you think it could the processor over heating? as the tv can stay on for a few hours then clicks offComment
-
Re: lg42le4500 screen issue
Hello your problem is caused from bad solder under SoC. Reflow it and will fix it. ��Comment
-
Re: lg42le4500 screen issue
I've fixed a few TV's in my time and knowing how old / history is also important, it kind of eliminates certain issues. For example, I have a 42" LG tv, classic black screen/no sound but! it was working fine just before the lightening storm and is about 4 years old, little internal dust. I'm reluctant to spend £50 on a working board but realistically, unless we personally gain from a repair, it's all about minimizing costs which is a shame as you gain so much knowledge working out why a circuit has failed, swapping out boards is easy but less educational.Comment
-
I have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started ‘fading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.
I ordered a supposedly ‘new' Tcon board this time, and... -
Hello everyone,
I am experiencing a BIOS-related issue with my Dynabook Satellite Pro C50D-B-100. When I power on the laptop, the screen stays black, and there is no response from the system. I suspect a corrupted BIOS.
I have checked the forum and the available documentation but could not find a solution specific to my issue.- Brand & Model: Dynabook Satellite Pro C50D-B-100
- Part Number (P/N): PYU13E-00C00PFR
- Serial Number (S/N): 22028896H
- System Configuration (SC): A1PYU13E1127
- Motherboard Model: IP3_ACN16_MB_V21_20211222A
- Power Input: DC 19V –
-
Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!
My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.
This time the original cable broke too close to the screen, it can't be fixed without tearing the screen... -
Hi everybody
Since day one I'm having an unpleasant contrast/brightness issue on my Asus laptop.
Basically while watching movies, if subtitles appear on screen, the contrast or the brightness of the entire screen increases a lot (not sure if it'is brightness or contrast), disturbing the viewing of the movie.
Last year I replaced my screen because got damaged and this contrast/brigthness issue persists. It happens only on the laptop screen, in fact If i plug an external HDMI screen the issue does not occour on it.
It occours both on ubuntu and windows...01-01-2023, 05:12 PM -
Hello, Last week I bought the 50" Sony X80j tv everything was working fine, untill I plugged the tv in a ups power supply 650va the tv remote control became unresponsive and the TV became laggy after a while the picture quality isn't the same as before the tv seems less brighter and the picture is somehow blurry, people's faces don't look as natural as before, there is a mini orange-pink tint to the edge of people's faces especially in NETFLIX Dolby Vision like in One Piece ep1 Alvida skin tone, my intention was to protect the tv but something went wrong I checked the ups with a multimeter,...
Comment