Question about Sanyo DP26649 26 in. TV

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I have a sanyo DP26648, when it is turned on it goes to a blank white screen

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  • Jacob Ingersoll
    Jacob Ingersoll Feb 20, 2012

    there is no sound and not even a little video

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1 Answer

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  • Sanyo Master
  • 8,617 Answers

Replace the main board. The guys at www.tvcircuitboards can assist in getting a replacement main board with warranty. Just hit the contact us button and leave a email with model number and symptom

Posted on Feb 20, 2012

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: white screen

I called sanyo ,they had me try this and that and then said a tech guy would call back he did i am taking the tv to a repair shop and it will be fixd under the warranty.

Posted on Jan 13, 2009

freetek
  • 5568 Answers

SOURCE: White screen only on Sanyo DP26648

Your reported symptoms are odd in that most failures are related to the primary power supply but that takes down both audio and video.
The backlight is obviously working (white screen) but it is no longer receiving any video information and this points to a failure of the logic (or the output of the power supply that services logic) used to control pixels on the screen.  Some screens have the majority of the control ICs actually mounted on the LCD assembly and because of very close pin distances used on dense ICs, they are often not replaceable by hand since they were installed by robotics.
I would first suspect (and hope for) the logic voltage output of the power supply to be the culprit. 
If any of you posters have had a repair done and received any kind of a detailed report (you should), would you be kind enough to post it back as a comment to this original message?   

Posted on Jan 16, 2009

  • 3 Answers

SOURCE: On our Sanyo TV model DP26648, the picture runs

Pixal on Remote

Posted on Mar 11, 2010

  • 3 Answers

SOURCE: My Sanyo 26" LCD TV - model DP26648 has sound but only displays a

Turn off and on

Posted on Mar 11, 2010

budmrtn
  • 11361 Answers

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:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

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

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Posted on Aug 05, 2010

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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

http://www.coppelltvrepair.com/search?Q=DP26648+&As=false&Pf=&Pt=&Sid=false&btnsearch=Search

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Neither "solution" is a solution. Anyone actually


Hi,
Your problem is the T-con board. This is gone bad/faulty. I would advice you to replace it with new T-con board and your unit will back to normal again. You may look for the replacement online. Try ebay.com or shopjimmy.com.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

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I called sanyo ,they had me try this and that and then said a tech guy would call back he did i am taking the tv to a repair shop and it will be fixd under the warranty.

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