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The picture on my 24 in dynex tv goes out shortly after I turn it on. The audio still works fine

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  • 343 Answers

There are some bad capacitors on it's power supply board. Unplug it, take off the back and see if you have some burst caps. They will have domed tops or actually be burst open. Note the value of them and buy new ones and replace them. Only do so if you are comfortable doing such repairs though. Good luck and be careful!

Posted on Jan 20, 2013

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Posted on Jan 02, 2017

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stonephoenix
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SOURCE: no picture

G'Day!

Unfortunately, what you're describing is a repair issue. You won't be able to address the problem with troubleshooting. There is a part inside the TV that needs to be replaced. If you're under warranty, this will cost you nothing. If you're not under warranty the cost will likely be a minimum of $200 parts and labor. However, be warned that the cost could be considerably higher.


I hope I've provided you useful assistance and that this information allows you to make an informed decision as to how to proceed from here. Please be sure to vote on my response. I hope I've earned a good rating from you today.

Please post a comment if you need additional assistance so that I can help you further.



Posted on Jul 18, 2009

  • 2 Answers

SOURCE: Screen goes black, still have audio

I first changed the 220uf capacitor with no luck. I flipped the BURN switch to on and the set has been working great for a week now. Daughter left it on for about 20 hours overnight with no problem. Anybody have an idea what those 4 tiny switches are for? I have heard these type of switches called "dip switches". They are tiny white switches in a yellow block on the lower left side of the upper circuit board. The top one was labled 40", the next one down was labled 46", the 3rd one was 4 letters "EW" something I think, and then the bottom one was labled "BURN".

Posted on Aug 12, 2009

  • 2318 Answers

SOURCE: Dynex DX-LCD32-09. tv was working fine, then out

This type of failure could be in the LCD controller board or the power supply might not be providing enough voltage to the main board and LCD controller.
Let me know if you require further assistance locating the boards or part numbers.

Posted on Sep 28, 2009

budmrtn
  • 11361 Answers

SOURCE: dynex tv no picture screen comes on and then goes black

There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc. Look for 5vdc, 12vdc, and 24dvc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Posted on Dec 18, 2009

pjbaldi
  • 8 Answers

SOURCE: dynex 32" tv picture goes black

If there is still about ? 24. Volts coming from the Power Board when it goes dark, it will be the Inverter board that needs replacing. If not, it is the Power Board that needs replacing. The Voltages should be written next to the sockets & plugs on the Power Board.

Posted on Jun 02, 2010

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