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I have a dynex lcd flat sceen 22inch that when the power is on there is a black screen and has no picture with sound, when i turn it off and back on it comes on with the picture and the sound and a second later back out with just sound. what is the problem?

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It can be a weak power supply , or a bad inverter, can for bulged caps on power supply

Posted on Oct 16, 2010

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1 Answer

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Power supply caps or backlight inverter! Common issues with LCD flat screens for some reason.

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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.

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Most likely a power supply component has aged and thus changed value and/or failed. Take it to a reputable repair person.

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The TV (Dynex DX-LCD32) will not come on. The


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Dec 25, 2009 | Dynex 32 in. LCD Flat-Panel HDTV

1 Answer

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.

Dec 18, 2009 | Dynex 32 in. LCD Flat-Panel HDTV

1 Answer

I have a 32'' Dynex TV and when I turn it on all I get is sound and no picture just black screen.


The problem can be the backlight inverter board is bad or it is not getting power from the main power supply. those are the two places to look for.
http://en.wikipedia.org/wiki/Capacitor_plague

Nov 05, 2009 | Dynex 32 in. LCD Flat-Panel HDTV

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Unplug it from the wall, wait 2 minutes and plug it back in. if problem still exists, its probably the main pcb.

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