Question about Norcent Technologies LT4247 42 in. LCD TV

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Power light is red so I guess it's getting power but when I try to turn it on nothing happens. I know a green light indicates it is on but that is not happening and I also have no remote.

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The standby 5vdc power is working , that is why the front LED is on but it may be in the safety shutdown mode due to short circuits or bad 12vdc and 24vdc power supply section, or bad main cntrol baord, shorted circuits in the backlights inverter board. You will need to do in-depth troubleshooting.

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

Basic LCD monitor and TV troubleshooting guide:
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 and long life rating such as PANASONIC FM or FC series.

Posted on May 25, 2011

  • Nataliagai Dec 10, 2011

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Posted on Jan 02, 2017

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