Question about Dell W2600 26 in. LCD Television

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Television has sound but a black screen - Dell W2600 26 in. LCD Television

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  • Master
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Parts:
http://www.shopjimmy.com/catalogsearch/result/?q=dell+w2600

It mayhave 24vdc power supply problem, backlight inverter board, main board problem, T-CON board problem.

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 is some troubleshooting 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

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Please post back what you find.

Posted on Nov 11, 2010

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  • Dell Master
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Tv turn on now,have picture flashes few sec.than died and have only sound left only?Yes,than the long board call the LCD inverter board is dead.The Long LCD inverter board help the tv LCD screen panel have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a long refurbish LCD inverter board for the replacement.

Posted on Nov 11, 2010

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