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I have a insignia ns-lcd37 that has sound but no picture so i assumed a bad t-con board i replaced the t-con board with a new same problem left tv on for hours in a darkened room i saw no backlight i checked all my voltages at the power supply every terminal checked out good what could it be

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  • ajwilliams65 Mar 28, 2011

    Part# VK8A183I0207 that # is on the white tag and I have # 4H.V1838.401/D

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Its 100% sure that the source of the problem is the backlight inverter board. The fact that there is no backlight confirms this. You will need to replace the backlight inverter board to resolve this problem. If you can get me the part number off the same I can find you a replacement

Posted on Mar 27, 2011

  • eagle338
    eagle338 Mar 28, 2011

    I need the complete part number seperated by dots EX: VK8A183.M0206/19.26006.130

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I have a insignia tv that shuts off about 2-3 minutes after turning on what could be the cause?


This is an indication of an overheating component on a power supply board. http://www.shopjimmy.com/insignia-6ha0132010-power-supply-for-ns-lcd37.htm

Oct 16, 2015 | Insignia NS-LCD37 37 in. LCD TV

1 Answer

MY TV WENT TOTAL BLACK ON ME WHEN WATCHING IT


Hello
Your TVs' backlight inverter board has damaged. It should be replaced.
This id the picture of the damaged board. You can do it by yoursef, if you have sound knoledge in electronics. OK.
12_17_2011_5_16_03_pm.jpg

Dec 17, 2011 | Insignia NS-LCD37 37 in. LCD TV

1 Answer

I have a Insignia NS-LCD37 for the past 3-4 years and last night i turned it on and got zero sound. I unplugged it and turned it back on and then the sound worked. then a few hours later I turned it on...


Two options - open it up if you have electronics experience - replace the AV board or trouble shoot the board for bad components. Usually this is hard to do without the proper tools and training. you can check to see if it has busted/bulged/leaking capacitors though...

thanks,
michael

Apr 16, 2011 | Insignia NS-LCD37 37 in. LCD TV

1 Answer

I have an insignia ns-lcd37-07 giving to me, i replaced power supply board and i still don't get anything. what should be my next step?


Now the tv is turn on,tv have power LED light indicaton but no picture?Still have a clicking sound but no picture on the tv LCD screen panel?Yes,than the tv Tuner signal board that the other board 70% also might have the problems too.That the board where the incomming broadcasting signal cable plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish tv Tuner signal board for the replacement.

Apr 13, 2011 | Insignia NS-LCD37 37 in. LCD TV

1 Answer

My tv has sound but no picture, just started happening and its non stop model # NS-LCD37


This one in the pictures has sound and backlight but no pictures due to bad T-CON Bd.
Pictures: http://s807.photobucket.com/albums/yy352/budm/Insignia%20NS-LCD37HD-09/

You need to find out if it has backlight or not so we can figure out if it is power supply, T-CON bd, or backlight inverter board.
First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.

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, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find

Dec 07, 2010 | Insignia NS-LCD37 37 in. LCD TV

1 Answer

No picture only a sound


Usually this means that your LCD panel in your TV is bad. The only way to fix it is to replace the LCD panel.

If you can get a hold of the T-con board, which is part of the LCD panel that decodes the signal form the main board, then replacing that will save you some money and should fix the problem. The LCD panel is very expensive and usually exceeds the cost of the TV.

Oct 13, 2009 | Insignia NS-LCD37 37 in. LCD TV

1 Answer

Insignia NS-LCD37 TV - no sound


Start checking the cable connection to receiver, try moving or replacing cables.

If you have a surround with external speakers check surround connection cable and speakers wiring.

If the cables are OK, then the unit may be faulty.

In that case the fault can be either the audio board (often audio circuit is integrated on the main board) , or the sinput output signal board.
Also a contact on connection to internal speakers can give you same problem.

May 22, 2009 | Insignia NS-LCD37 37 in. LCD TV

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