Question about LG 42LG70 42 in. LCD HDTV

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Hi I have a LG 42LG70 that is 2 years old and it is turning on and off repeatedly until we turn it off for a bit ..When we turn it on again the problem stops most of the time...We use the remote to turn it on not the power button....I thought it was the surge protector so I replaced it with an expensive one ,,,it was ok for a while ,,but it's doing it again...????

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You may have dying power supply module which can be due to bad caps. It will get worst and can cause more damage to the set. It can also be due to poor soldr joints.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/
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.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Posted on May 23, 2011

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Posted on Jan 02, 2017

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