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Re: rca tv won't power on
It may need a Flyback Transformer or a burnt capasitor and resistors. there are many posts with this same problem. Some a little different. Check the fuse just inside where the power supply cord goes in . if the fuse is blown you will have to find the reason it burned . But maybe you will be lucky and replace the fuse. And it will turn on. but I think that only a TV technician can fix the problem.I have a background on TV repair and I think it's the Flyback transformer. sometimes you canresolder them and they stay.
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possibly external power supply faulty under load it may fail these power supplies ofen have capacitor failure open the power supply to check for leaking/bulging/swollen capacitor is around 2000uf rated at 12v
Resetting the TV If the buttons on the remote AND the buttons on the TV case do not work (channels do not change and you cannot open or navigate the menu), the TV has stopped responding. Reset the TV as follows:
NOTE: Some TVs have a reset button. If available and accessible, try using the reset buttons before using the steps below. Using the reset buttons can save time. 1. Unplug the TV power cord from the power outlet. 2. Unplug any connected devices (DVD, Set-top boxes, etc...) 3. Press and hold the TV power button for five seconds. 4. Plug the TV power cord back into the power outlet and turn on the TV. 5. Open the on-screen menu to confirm that the TV is responding again. 6. Turn off the TV and reconnect the devices. 7. Turn on the TV.
LCD TV TroubleshootingThe defective LCD TV may have the following common symptoms:
Symptom: No picture on screen but LCD TV still has sound. Solutions: The problem is cause by defective inverter. Replacing ivnerter will solve hte problem. Symptom: Screen flash on and off between 1/2 to a few seconds, but power indicate light stays on and TV still has sound. Solutions: The problem is cause by defective inverter. Symptom: Blue Screen but no picture Solutions: The problem is cause by defective Main Board(AD Board). In some cases, this problem may cause by the defective Screen Controller board. Thsi board is mounting on teh back of LCD TV Scree. Symptom: Power light stays on but no display and sound Solutions: The problem is cause by defective Main Board(AD Board) or Power supply board. Symptom: No Power or Power indicate light does not lits Solutions: The problem could cause either by defective Power supply board or defective Main Board(AD Board). Symptom: Screen is half dim and half bright Solutions: The problem is cause by defective LCD Panel.It needs to be replace.