Question about Flat Panel Televisions
We lost power to our LG teleision and cannot turn it on. There isn't any lights on showing power
Power supply board is dead.Replaced the power supply board will solved this problems.Tries Websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
Posted on Mar 15, 2010
SOURCE: Plasma Television won't turn on
A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.
You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.
if otherwise the power supply board is faulty you can try websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
Hope this helps
Posted on Jul 02, 2010
SOURCE: fp-t5084 Samsung 50" Plasma does
Here are some basic steps that will help you fixing the problem.
I'm assuming that your unit is dead set without an standby LEDlight and your outlet is live.1.Power cord - check the cord it might be opened (nocontinuity).This is due to frequent bending,pulling. 2. Power switch - check for dry joints, open contact. 3.Check the internal fuse-sometimes the fuse fail because of the powersurge, replacing with new one will cure the problem, If this is the case Iwould advice you to use surge protector/AVR (Automatic Voltage Regulator).However if the fuse blew again this is an indication that you have a shorted parts in the power supply, you may visit thelinkhttp://www.fixya.com/support/r8053361-fuse_keeps_blowing for more info. If no reaction andstill the unit didn't power up then you have an open parts on the power supply.
4.If you see that the fuse is intact , don't attempt to touch anythingbecause there some fatalcomponentsstored electricity enough to hurt you with a simple mistake only. I wouldadvice you to look for aprofessional to troubleshootthe power supply. If you want to repair it yourself make sure that you havenecessary tools and testinstrument. First check bad solder joints(re-solder allcold solder), leakyelectrolytic capacitor(sometimes it has bulged at the top but not all, you betterhave a capacitor checker), open/shorted regulator transistor/IC(mounted in heatsink), open fusible resistor (caused by shorted regulatorTransistor/IC), shorted zenerdiode.
You may also replace the power supply board, this is more convenient if you are going to DIY because no soldering required. Obtain the board from your local Samsung service centers.
Also check if your unit is under warranty before opening the backpanel, it will void the warranty. Avail it because the manufacturer of yourunit will fix it for free or a little charge only. Hope I helped you. Have a nice day! Thanks for using fixya.
Posted on Aug 04, 2011
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