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It is maybe inveter is damage,you can open this tv,find inveter.if make sure inveter is defective,you can sreach from www.wisiny.com by pcb number of that boards.
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If the TV has no picture or sound, but the led turns from red to blue or green that means the mainboard has sent the power supply board the start up signal. The first thing that needs to be done is the voltages need to be checked to the power board. Follow the steps. 1. Hold the (menu) and (vol-) buttons on the side of the TV. 2. While holding the (menu) and (vol-) button on the side of the TV you also need to press the (power) button on the side of the TV (NOT REMOTE). 3. When the blue light comes on and stays on wait 10 seconds then let go of the (menu) and (vol-) button. 4. Wait 30 more seconds. After waiting another 30 seconds you should see some type of picture appear on your screen. — If those steps do not work then you need to unplug your TV for 10 minutes then hold the (power) button on the side of your TV for 60 seconds - plug in and turn your TV on.
If those steps do not fix your problem I would check to see if your device is still covered under a warranty. If not I recommend www.tvrepairpros.com they will find a technician in your area to further assist you.
Remove the ribbon connectors going from the tcon to panel boards, power the set up and see if it stays on then, you won't have a picture naturally but see if the backlights and sound stay on.
Check its back-light inverter board for any shorted component/s. Repalce it. There is no repair to it. Chekc and locate the exact faulty board, by disconnecting the power cable that goes to each board.
If you wish to get some details, check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/
1. Hold [menu] and [vol-] button on the side of the TV
2. while holding these, press the [power] button on the side of TV (NOT remote)
3. blue light comes ON and stays ON
4. wait 10 seconds then let go of [menu] and [vol-]
5. wait another 30 seconds and some type of picture should appear
I think this is right. I got it from the JVC call centers guys so sorry if I missed or messed up a step.
btw for anyone experiencing these problems with the infamous "is-lcdtv32" byd:sign is the same manufacuterer as insignia, its the same company with a different sticker. i know this isnt a solution, but parts for all discontinued insignia';s can be purchased thru byd:sigh(by design). hope this helps .
Gentlemen, I have seen people with this problem and it requires the replacement of the light engine, search AVS Forum, for more information. Understand it is not cheap, hope you have ext warn.
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