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I have a 32" HD DVD combo Insignia LCD flat screen TV. For the last month when you turn on the TV w/o cable the TV stays on for 1about 30 seconds then a clicking noice from the back of the TV happens and then the TV automatically turns off by it's self. We call our local Cox Cable conmpany and theya re saying that it is not the cable box or the cable cord that you connect to the back of the TV. A friend of mind gentle and very very slowly insert the cable cord into the TV and the TV worked for 2 days. I turn the TV to the place where I bought it "Best Buy" and they plugged in the TV and they said it work and they did not assit me at all. Several local TV repair places here in Las Vegas, NV all are stating that it will cost me $200.00 just for them to look at it not if they can fix it. The same problem also occurs when the cable box is not connected to the TV and you insert a DVD the TV shuts off within 30 seconds. Are you able to assit me w/my TV or trouble shoot. Note: I paid $699.00 for this TV 11/25/2008. PLEASE HELP; HOME OF 2 GRANDKIDS WITHOUT CARTOONS AND SPONGEBOB. Janet Contreras 702-261-9167

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Hi Janet.

Hi.

The TV is forced to stand by when there is an incorrect voltage value detected from the main controller board. When this happen the main controller is forcing the PSU to standby, sending the TV in protect mode.That is the clicking noise that you hear.

The PSU can be tested bridging the low voltage control lines that are turning the higher DC volts from PSU on.

The procedure to test the PSU is illustrated in the following article: How to test an LCD TV or monitor PSU

Bridging the voltage lines is a repair suitable for an experienced technician. If you are a DIYer, better testing the resistors and components near to the faulty capacitors by reading Ohms to check if they have continuity. This operation is done with power not connected.

If you need to replace the whole board, here you will find the part : ShopJimmy
Both power board and digital board may be responsible.



Posted on May 26, 2010

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