Question about Sanyo DP26648 LCD TV
NO SOUND GREAT PICTURE
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: The television was working and
Unplug it for about an hour to let it reset itself, if it is still does not work, then you need to do some troubleshooting.
First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there are some troubleshoot you will have to do to find out the causes of the problem you are having.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
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Posted on Aug 05, 2010
There are two reasons why your Sanyo DP26648 would has sound but no image and both are equally likely in our experience.
First, you may have a problem in the section of the power board that supplies the backlight module (called inverter) with 24V.
We've seen that several times and the problem is usually minimal - only electrolytic capacitors gone bad - and other times not so minimal.
We have a repair service for that power board and we may have some boards available too...check out at
Posted on Aug 25, 2012
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