I have a sansui that just started having a dim picture, adjusting backlight settings up or down have no effect on display. I went ahead and ordered some backlight strips for it but find it weird that changing the setting has no effect. Could it be power related. Where should I start? Thanks Michael 
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Got it apart, no backlights out hooked backlight tester up and it’s only pulling 52.8 volts. ;there are some bulging caps on the board so gonna go ahead and replace all those. The board has very few voltages listed on it so not real sure what to check. -
You bought leds for nothing, there was a cheaper way to do, test first the leds then eventually buy them, the caps havento be replaced, after only after you can continue diagnosingComment
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I gave $24 for the strips and $25 for the caps I ordered, so not a big expense to get it back up and running. Thanks MichaelComment
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Please show yours PSU Bl circuit from topside and down side too , you seem have sync SMD R Value changed to higherComment
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Cap kit got it back up and running. ThanksComment
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I have a sansui that just started having a dim picture, adjusting backlight settings up or down have no effect on display. I went ahead and ordered some backlight strips for it but find it weird that changing the setting has no effect. Could it be power related. Where should I start? Thanks Michael ...08-31-2025, 10:37 PM -
Hi guys! I realized you have a lot of knowledge here so i am hoping you could point me in right direction with my odd issue.
The Tv is a Philips 58PUS8545/12, it had no picture but working backlights.
Original T-con:
Opened the Tv and tested to unplug one ribbon cable at a time. With this test i could see that i got fine picture on both halves as long as there was only one ribbon cable connected, with two connected picture were gone.
First replacement T-con:
I thought it might be t-con and ordered new t-con from china(supposedly tested)... -
This was my main TV for the last 6 years. I'm not inclined to throw out a $2600 TV so quickly so I'm trying to investigate the issue.
Problem
TV was disconnected from power for 6 months during construction. When I plugged it yesterday picture was fine, after 30 seconds it dimmed then started developing horizontal lines, picture then starts to ghost vertically until it degrades into vertical streaks. TV always displays a perfect picture when cold. I can unplug TV for 5 minutes and plug it back in and picture is restored for 20 seconds. I can also keep it in standby mode... -
Hi, I have a Samsung UE50TU with:
- sound and backlight, but no picture
- when it arrived, it had a picture for a few seconds
- it keeps rebooting
- without ribbon cable between the two panel boards, it does not reboot but I have no picture
- without cable between mainboard and lcd panel, it does not reboot (but obviously i have no picture)
- when i try a tape fix, its keeps rebooting, unless I tape off pin 1 (the innermost pin). In that case it does not reboot but I have no picture.
- without cable between mainboard and lcd panel and with a jumpered... -
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...
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