Question about Coby TF-TV3217 32 in. LCD TV

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Coby dvd-1972 has a very dim picture

The TV has volume and everything works. the problem is the display is very very dim. I replaced the backlight board and it did not change.

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  • Coby Master
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Back light board are you meaning the inverter board or the screen ? if the inverter board has been change and there is no difference then it would be the screen lights them self. has it been flickering every now and then in a corner of the screen that is a singe that they are on there way out.

Posted on Sep 19, 2013

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Posted on Jan 02, 2017

electrotech1
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SOURCE: I have a coby tx-tv 2608 lcd tv that the picture

You might want to check to see if you have some bad solder joints on the inverter, and re solder them , or you could have a power supply problem, getting weak, or need to change the electrolytic caps on the power supply.

Posted on Nov 11, 2010

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I have a 50 inch Toshiba 50L4300U that has no picture but has sound. What board do I replace?


Do this test first. With the TV on normally, shine a flashlight on the screen. look for a dim moving picture.
1) If you see one, the backlight led driver isn't working.
2) If you DON'T see a picture replace the T-Con board.
You can get parts here: www.shopjimmy.com TV Parts Universal TV Stands DLP Chips ShopJimmy

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I have a coby CSP96 speaker system. it said on the manual online that i found on the cobyusa.com site that there should be a volume control on top of the sub-woofer but there isn't one there. i can only...


I am having the same problem. I also have the combo dvd and theater system. I also read that the sub woofer is supposed to have a volume control on it but its not there. The only way to control volume is to connect to coby dvd player. This dvd player is beyond terrible. DVD looks bad and sound is miserable. I hooked up xbox 360 to my samsung 52 inch, then on the outputs of my tv into the inputs of the "TV" section on the Coby Sub woofer. At this point great sound quality comes from the xbox and all speakers, but the volume is uncontrollable and is blasting loud. Tv volume control does not work either. I am stuck like chuck and have not found a solution. This has to be one of the worse purchased i have ever made because i am forced to use a terrible DVD player just to get some sound through the speakers. I dont understand why on the speaker systems you buy without dvd combo has a volume control on subwoofer, but on the combo subwoofer doesnt have it. Just terrible. I will continue to look online and try and find a solution other than smash it to bits.

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I just bought the coby csp96 surround sound package and am having trouble hooking everything up. It came with the dvd player to hook all the input cords to, which i did. Everything is working accept when i...


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1 Answer

Toshiba 22LV505 TV-DVD:


Check the DC filter caps in the power supply first. Check the 24vdc (or 18vdc for this 22" model) to see if it goes away when the screen goes black.
There are main AC fuse, backlight inverter fuses, T-CON fuses.
If you are going to DIY and have proper tools and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Jul 07, 2010 | Toshiba 22LV505 22 in. LCD TV

1 Answer

TV turns on, but screen goes black after a minute. Audio only after that. Coby TF-DVD1972 19inch LCD DVD combo


The LCD inverter board is dead.That why u not getting a backlight to the LCD screen to get a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter for the replacement.It a long board.

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1 Answer

Black screen- laptop only works with external monitor


The fault could be a faulty CCFL lamp or inverter.
To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

If your Dell has a S-video output it could connect to a TV or a video device, which allows for a TV option.

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1 Answer

Sony LCD TV has Dark Picture


Hi there,

the problem is not the lamp.

This model has a set of two backlight lamps, and it is practically impossible that both lamps go faulty at the same time.

When the backlight lap in an LCD TV goes off in this way, the faulty part is always the backlight inverter, that is the high voltage board powering the lamp.

In your case you have to get the TV inverter booard replaced.


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1 Answer

Sound with no picture


the problem is in the backlight try to measure the supply.and replace the inverter.

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1 Answer

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If you shine a torch into the screen and see the picture then the backlight has gone and needs replacing, although it would probably be cheaper to buy a new dvd player.

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