Question about Insignia NS-L42Q-10A LCD TV

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My insignia ns-l42q-10a just gave out yesterday. When I plug it in no light comes on at all. I already replaced the power board, and it didn't work at first, but then after a couple of days it came on. It only lasted for about 7 hours and went out again, I was wondering why it would come back on only to do the same thing it did the first time. Is there anything that can be done to fix the problem?

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If your NS-L42Q-10A will not power on with no lights and if you have a blue light on the tcon board when you push power then your problem is not your powerboard. The issue is your main board. These can be purchased from ShopJimmy and ebay.

Fixed one of these tvs today 8/17/12 using main board pn 715G3269-1 hope this helps someone out down the road.

Posted on Aug 17, 2012

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  • Insignia Master
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There are two possibilities here.

The first is that you've had bad power board.
NS-L42Q-10A is known to have issues with the power board.
You can read more here:
http://blog.coppelltvrepair.com/2011/04/insignia-ns-l42q-10a-ns-l42x-10a-does.html

The second option is that you have a bad main board. This also not unheard of and since you were able to get it to work with another power board it is actually the more likely case.

What I'd do if I were you is try to heat the main board a bit with a dryer to see if it will start up more easily in that case.

Do not overheat it though.

Sometimes it's just bad capacitor that needs time/temperature to work good.

Other times it's bad solder, usually on the main microcontroller, which needs higher temperature which expands the metal until it makes good contact.

Other times it is something else.

Posted on Apr 13, 2011

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Posted on Jan 02, 2017

John-INSG
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SOURCE: Insignia NS-L42Q-10A Setup: Wrong TV Source Chosen

You can change this option by going to the "Channels" menu and selecting "Auto Channel Search." Additional details can be foundat InsigniaProducts.com, under the Support tab for your TV.

Posted on Mar 10, 2010

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SOURCE: I need a power cord for Insignia NS-L42Q-10A tv?

Hi there, (as far as I know :P) all these tv/monitor cords are the same...you can even use the one from your home computer. If you have a homecomputer try that powercord, if that works. then thrifstores are full of these for around a dollar. Radioshack and the like will have them too, but it could run upto $20....You can also try computerparts stores...These cords are all over. I have an old crt monitor of wich the power cord fits into my 2008 32" lcd tv....

Good luck and if this has (or not) helped you, then please rate, thank you!

Posted on Feb 03, 2010

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Posted on Mar 05, 2010

eagle338
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SOURCE: I need to know how to enter insignia ns-l42q-10a

Did you try "Input , 2,5,8,0" ? May I know what exactly is the problem?

Caution:Be advised that the service menu is to be accessed only by trained professionals. Keep a notepad handy. If you accidentally change some setting then pen it down go back and change it again. Pen down the values of anything that you may wanna change. Be very careful.

Posted on Jul 08, 2010

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The Tcon Board or the LCD panel is faulty. Can confirm by Replacing the TCON board.
If you wish to get some details; check the site linked here. Pull up older posts.
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I need to know how to enter insignia ns-l42q-10a service mode. Thanks meetyahya


Did you try "Input , 2,5,8,0" ? May I know what exactly is the problem?

Caution:Be advised that the service menu is to be accessed only by trained professionals. Keep a notepad handy. If you accidentally change some setting then pen it down go back and change it again. Pen down the values of anything that you may wanna change. Be very careful.

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Insignia NS-L42Q-10A Setup: Wrong TV Source Chosen


You can change this option by going to the "Channels" menu and selecting "Auto Channel Search." Additional details can be foundat InsigniaProducts.com, under the Support tab for your TV.

Mar 09, 2010 | Insignia NS-L42Q-10A LCD TV

1 Answer

I need a power cord for Insignia NS-L42Q-10A tv? Are they available, and where?


Hi there, (as far as I know :P) all these tv/monitor cords are the same...you can even use the one from your home computer. If you have a homecomputer try that powercord, if that works. then thrifstores are full of these for around a dollar. Radioshack and the like will have them too, but it could run upto $20....You can also try computerparts stores...These cords are all over. I have an old crt monitor of wich the power cord fits into my 2008 32" lcd tv....

Good luck and if this has (or not) helped you, then please rate, thank you!

Feb 03, 2010 | Insignia NS-L42Q-10A LCD TV

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