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Philips lcd tv 26 inch. 3 years old . when you switch on it is fine. afetr 2 hours part of the screen ( same vertical corner) starts breaking up and then vertical bars. on switching off for sometime and then restarting it is fine again but for shorter duration.

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It can be bad T-CON board, worst case the LCD panel. You can try cooling the T-CON board with electronic freeze spray for electronic trouble shooting to see if the problem goes away. T-CON is mounted under the metal sheield which you will have to remove to get access to it.
If you are going to DIY and have proper tools, knowledge of electronics 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 Jul 13, 2010

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