Question about RCA F36648 36" TV

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Oscillate dark to light and back again

When the TV is on the screen starts to go dim and then it lights back up again.

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If you get the problem initially when you switch on the tv means improper misalignment of screen control or screen control malfunction. Problem continuous means check filament supply when the screen in dim condition. There is no supply around 3v change filament supply resister and check any dry contacts.

Posted on Sep 09, 2007

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Posted on Jan 02, 2017

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Have a element 40 inch model number ELDFT406 screen dark or dim on left side


Two things to check. The T- Con board and the back light strips. The T-con board can cause dimming on parts of the screen. A bad section of back light LEDS can do it also.
Parts can be found here: TV Parts Universal TV Stands DLP Chips ShopJimmy

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Why does my TCL tv stay dimmed and very dark screen? I've reset it and everything?


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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1 Answer

Television screen turns dark


A lot of these smart televisions have an autoset configuration where you can go in and set it to auto dim when the outside ambient light changes. It can also be put on a timer. Saying it is at random may be because of both of these features being active at the same time. I would go into the settings and check these settings.

Lastly, the signal you are receiving can change which can cause the auto dim to kick in.

If this does not resolve you issue, you may have a back light going out and I would recommend taking it to a reputable repair shop for evaluation.

Hope this helps.

Apr 25, 2017 | Samsung Televison & Video

1 Answer

My LED tv screen is dimmed on the right 1/3. After some use it eventually goes totally black?


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
Some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

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1 Answer

TV LCD 42" POLAROID TLX04244B (RED LIGHT ON, NO CHANGE TO BLUE AND NOT START)


Double check your connections. General rule of thumb, if the problem changes after you are in the set, it is probably something you did.
As for your original problem, it sounds as if you either have a bad capacitor or the tcp onthe panel is going bad.

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1 Answer

Monitor dims when we turn lights off in room.


You need to give a more detailed description of the problem.
The LG 47LH90 is an LED backlit TV with 'local dimming' technology. This means that there are lots of white LEDs behind the screen and these can be controlled in groups to allow localised areas of the screen to be dimmed to produce better contrast between light and dark. It is very likely that when the room is dark, this local dimming is more noticeable. The actual individual LEDs cannot be controlled and so the area that is dimmed will generally be greater than the area that is required to be dark 'blooming effect'. In addition, LED backlit displays only maintain their contrast through a tight viewing angle. If you sit too farto the right or left, then light from non-dimmed LEDs will leak through and the screen will look lighter.
In short, there may not be any fault with your TV.

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1 Answer

Skin tones oscillate every 5 seconds, Samsung HL-67A510 67" DLP


Go to this Website and type in your Model number they will List Parts/Prices for your TV, They also have CD Service Manual you can order!
Encompass Parts Distrubtion 1-800-638-3328

When you know Part number you can go to Ebay ,Look under Electronics ,Thats where I find alot of Parts Cheaper then what companys want for them.

You might be Looking at replacing Light Engine or the Dmd Moduel Order the CD it will help you out alot.If one side of screen starts turning Green and wrong flesh tones it is the Light Engine

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2 Answers

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Time to replace your DLP lamp!  Expensive ($200 and up)!  Good luck!

Jul 31, 2008 | Sony Grand WEGA KDP-65WS550 65" Rear...

1 Answer

Dim screen


If its very dark and you can barely see anything its probably a bad back-light. I'd suggest to take it to your local Best Buy. And yes, they can look up PSP#'s with your credit card, but even easier by telephone number.

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1 Answer

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A grinding noise in that model usaully means the light engine is defective or it could be the color wheel. But light engine is most suspect as there have been some issues with the light engine assemblies

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