Have a pic wondering if it's the main board or just a loose connections
Sharp LC-70LE650U
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by scubacamperI found another post on this site the other day which has been very helpful in troubleshooting this issue I am having with my tv. The left half of the screen is dark, and the other half is VERY slow to generate it's image - and it only generates part of its image at that.
Based on this yt video, I have narrowed it down to an issue (short?) on the left side of the display, somewhere in the system of ribbon cables.
when I remove the bezel and the rear cover, I can get the image to display correctly by manipulating the ribbon cables on the left side which connects the left lower display... -
by SmartSarahDear,
I can not pinpoint the following problem on my Sharp TV LC70LE747E.
While the left side of the screen is not affected at all the right side of the screen gradually fades to a kind of dark. I can best describe this darkness like a totally worn out CRT display or a gamma correction totally out of range. This darkness flickers like a flame, a dark one tough.
Sometimes when I restart the TV it disappears for a while.
The problem worsened over time the last few months.
I've replaced the t-con module without success. The problem remains.
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by howardc64Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached....-
Channel: Troubleshooting Computer Displays
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by Bdm634Please help
SHARP LC-70LE857U
First it started with the tv working fine for about 20-30 minutes. Then it would start getting moving horizontal lines and extreme dimming on the one side. I did some research and it pointed me to a bad main board but also some people said bad power supply board. After the last test I did, the tv would no longer turn on and was giving the 2-5 code
So I found a good deal on a power board and it came in today. I replaced the board. No luck. Still 2-5 code.
Then I did some more research and found a test where I was... -
by ttmi100xGreetings everyone,
I have a HANNSG Hi221 monitor that exhibits two seconds to black issues (backlight goes off, display is still on as confirmed by shining a flashlight on it) with some additional oddities...
The monitor failed on me with a standard "2 seconds to black" some time ago prompting me to initially replace most of the electrolytic capacitors (some of them were bulging/leaking).
Things kinda sorta worked for a night, then the problem returned along with some flickering and "buzzing" noises.
Upon closer inspection...6 Photos-
Channel: Troubleshooting Computer Displays
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