Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
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.
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
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.
SOURCE: TV was playing, then the screen turned black.
If the screen is black and you have sound then lightly press and shine a strong flashlight against the screen. If you see an image around the edge of the flashlight, an image is being 'displayed'. The problem is probably in the Inverter/CCFT or the power going to the Inverter.
SOURCE: Insignia ns-lcd32-09 wont play VHS
Yes, that is correct you need composite (or coax) cabling to your TV. The unit cannot carry the VHS signal via component video or digital audio cabling
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Update: I took a multimeter to the power supply board and checked the outputs towards the logic board and also the inverter. When touching ground and 24V on the inverter output, I get no voltage on or off, plugged in or not. When touching ground and 5v on the logic I get 5v, but when touching ground and 12V I get nothing. Is this a power supply problem?
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