I have a poleroid 3200, wont power on i know its the powersupply i borrowed a friends and put it in and it worked fine, My question is what components in the powersupply control box need replaced. I work on this type of tv all the time just never polaroid mostly samsung and sony. any input will help email me back at firstname.lastname@example.org
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Re: Repairing polaroid 3200 powersupply
I would suggest to check the electrolytic capacitors that filter the 5 VDC, these caps become defective due to the amount of heat around them. These capacitors become leaky or bulging on the top or bottom.
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I think the 12v could have blown some capacitors in your starshower as the or there could be a fuse blown.
Either way, I would take it to a professional to repair or if you're skilled enough with repairing components on a board I would say checking the capacitors to see if one is enlarged or pooped on the top
I hate to say it, but it is prob the main board that went bad. (the board where all the inputs get plugged into) It is possible that it might be the power supply. One thing to check is to make sure you have 25v coming from the powersupply board to the connectors that plug into the main board. If you do have 24-25v than you will have to replace the main board. If not than the powersupply.
Check the powersupply/inverter and the CCFL's. In my case there was a bad capacitor on the Power Supply, and the soldering on the CCFL's was iffy at best - repairing solder joints on the CCFL's fixed my problem permanently.
The newer technology has design issues due to the confined space where all the components are and not well ventilated. A good number of LCDs failed due to overheated components, specially in the power supply circuitry; once this parts become dry or leaking the LCD will fail to power up.
It seems like the power supply is defective on your LCD. Replacing or repairing it should fix your power up problems.