Question about Insignia LCDTV26 26 in. Television
First, look at the screen in darkened room to see if you can see any slight glow from the screen, 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:
Please post back what you find.
Posted on Jul 22, 2010
Now tv turn on?Have a picture flickers a few sec. than just died,have only sound left?Yes,than the 1o 2 long board call the LCD inverter boards are dead.These 1or 2 long LCD inverters require changing to help the LCD screen to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy those 1 or 2 long LCD inverter boards for the replacement.
Posted on Jul 22, 2010
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Posted on Jan 02, 2017
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