How to replace Power Supply in Toshiba 44NHM84 44" TV
My Toshiba 44NHM84 44" TV turns off after about 30-90 minutes and I have to wait about 30 mins for it to recover. But the same issue pops up agin. I have read on here that the power supply is the most usual culprit.
Is it easy to replace? is it just a PCB or are there other parts that need to looked at?
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Re: How to replace Power Supply in Toshiba 44NHM84 44" TV
Since this is a DLP type set, there is a lamp and ballast involved. When the set shuts down, are there any indicator lights on the front? If so, check the owner's manual for an explanation of their meaning. Typically, the lamp can cause this or the ballast. If either of those are the problem, usually the lights on the front panel will indicate it.
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The fact that the television stays on for hours and other times turns in five minutes shows that your problem is intermitent .A defective component in the power supply is probaly causing the B plus voltage to go up.The TV can also have a dry joint which looks more likley i am curtain if you gave the TV a firm tap to the side when it come off it would come on back. Try it .
Lots of tvs after some years develop power supply problems, of this type, it may be capacitors drying out in the power supply, they usually swell up and deform a little. Cheap components but not a five mins fix. not for a novice
philips has a problem with bad electrolytic caps in power supply-you can eithor replace the swollen caps in the power supply-pretty easy if you use a solder iron.if not go to shopjimmys.com enter model number-scroll down til you find power supply--after it arrives plug in new one
Hi. This tv may have an issue within its contents.This issue concerns the power supply board. to confirm this, unplug the tv from the surge protector, if any, and wait for 3 Min's. after this 3 min wait, plug this unit into a wall outlet and power up. if it dose not power up, you will defiantly have to replace the power supply board.
your set needs to be repair by a tech you are having a problem in your power suply which is intermittent.either your hrizontal ic is shorting out, or your regulator or your microchip ic.or the diode that couple the collector of the horizontal transistor with the b+ from the fly back.or check for lose solder in the horizontal output or power supply. good luck