Question about Norcent Technologies LT4247 42 in. LCD TV

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No picture or sound

The red light at the bottom is working and when I hit the power button it turns green and stays that way but nothing happens. It was working fine just a few minutes before until I turned it off then tried turning it back on and nothing but the green light came on.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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toolkits
  • 1099 Answers

SOURCE: my plasma tv powers down

hello, Power supply board just die.It can be dead at anytimes.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement. Hope this will help

Posted on Jun 02, 2010

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  • 111 Answers

SOURCE: My tv wont turn on the red power off light is on

if you have audio then the backlight is not working

Posted on Oct 10, 2010

budmrtn
  • 11361 Answers

SOURCE: when I plug the power

Right now the standby 5vdc is working but it may have gone into safety shutdown due to failed power supply or shorted circuits in the backlight inverter board. You need to troubleshoot it to narrow down the causes first before buying the wrong parts.
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
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: 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 rating such as PANASONIC FM or FC series.
Please post back what you find.

Posted on Dec 02, 2010

anticlock
  • 1 Answer

SOURCE: Norcent 42

Did you ever get this problem fixed? My tv just started doing this today. I have the same exact one...

Posted on Feb 22, 2011

budmrtn
  • 11361 Answers

SOURCE: Power light is red so I guess it's getting

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

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