Question about Insignia 42" LCD Flat-Panel HDTV

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Insignia ns-lcd42hd. Red power light comes on when initially plugged in. After power button is pressed, light blinks once from red to blue,shuts off for a half a second, then back to blue, and stays that way, yet no picture. Once the unit is on, if you press the power button, I get 15 red blinks, then steady red light. Opened the unit, found no bad fuses Left it plugged in, and while removing the bigger harness off the left inverter board, the backlight came on. If the harness is partially connected, about half of it, the backlight comes on, but still no picture. What could this be? Is it in the inverter board? I dont beleive its the power supply, due to the backlight coming on. Is there some sort of microrelay in the power supply, or are they in the inverter boards? ANY help please!!

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 2315 Answers

SOURCE: Insignia NS-32LCD Backlight or Inverter bad???

If you've done the flash light test, it could be the inverter board became defective but it could also be that the power supply does not provide the +24VDC to the back light inverter board.
If you could do the +24VDC test using a voltmeter then we can say for sure that the back light inverter board is defective.
Let me know if you need further assistance.

Posted on Aug 21, 2008

  • 61 Answers

SOURCE: insignia ns-lcd32

Bubulica2000,

There is two reasons to have no display on your screen.
1.LCD panel itself is deffective.
2.Main board(mother board is Deffective)

How to recoganize the problem?

There is 5VDC going from main board to LCD invertor ( different model different pin so I am not able to tell which pin or Jack is)
Check while unit is ON mode it should read in between 3VDC to 5 VDC.If this volt is correct your LCD panel is Deffective.If no voltage appear in this pin Simply change Main board(mother board)

Dont forget to rate!!

GoodLuck
Dals123

Posted on Oct 21, 2008

  • 11 Answers

SOURCE: insignia ns-lcd32

You can download the manuals from the Insignia website at:
http://www.insignia-products.com/c-14-lcd-televisions.aspx
Jerry

Posted on Dec 08, 2008

  • 1 Answer

SOURCE: How to remove the back from Insignia NS-32LCD?

I unscrewed all the screws in the back, detached the tv from the base, and was able to get the back off. I ordered a new power supply board and will install it to see if it fixes the problem with the tv (won't turn on, insignia light alternates between red and blue). I didn't notice any problems with "swollen" capacitors, so if the new power board fixes the problem I'll update this website.

Posted on Jan 28, 2009

BoiseLCD
  • 63 Answers

SOURCE: I have a NS-LCD37-09 tv. No picture or backlight

Your main board is faulty. I've done several of these but haven't been able to figure out which component is actually bad these yet. I've simply had to replace the board itself, and it fixes it every time. One thing you can do to get your backlights to come on (and so you know I'm not Jive'n you) Is unplug the three wire bundle that spans from power supply to main board. This will usually make the backlights fire up. I even had one that after I left it that way for a minute (with the backlight on) it suddenly started working again! But this was short lived. :-(
One time I even tried recapping the entire main to see it that would fix it. It did not. I think it might be something to do with the small chip labeled SL37HA37. It's a 16 legged bastard near the 3-wire plug I told you to pull. It's that or possibly the bigger IC near it that has a heat sink on it. The ball grid array solder joints may be faulty. Just guesses, if any smart guys out there figure this one out, be sure to tell the rest of us please!
Thanks, Chris Boise LCD www.boiselcd.com

Posted on Apr 23, 2010

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