If I turn off the tv and try and turn it back on immediately, it will not power on. If I unplug the television and leave it disconnected for about 20 minutes, it is fine. If I leave it plugged in, with power to the powerbar, it will remain frozen until I physically disconnect or turn off the powerbar
Fault to the main power supply regulator section. Either it will be on a separate board, or on the part of its main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
SOURCE: Plasma TV-power light does not come on
Hello!
most probably the fuse inside the circuit blown out, You should open the back of the tv to become circuit board visible. But this hard when novice do it.
To be sure that everything will be alright i would rather suggest you to bring the tv to the nearest service center. maybe warranty work for that.
best regards,melnavz
SOURCE: SANYO Model CLT2054 Television
same problem, sound no picture. took it off wall disconnected power and smacked it a couple of times. Plugged it back in and works fine
SOURCE: Hitachi Plasma TV model P50H401
I think you have problems with the digital main PWB.
If the power PWB failed, turn off and change the pilot ligth to red.
SOURCE: No power on Westinghouse LTV-46w1 Television
This kind of failure is very common; that is why I suggest that one should keep the old CRT TV, buy a converter and put them both in the garage or basement so they are handy when our s*e*x*y new sets go belly up.
With fair confidence I can say that the main power supply has failed.
If you want to try this on your own, it only will require the removal of a few screws and a flashlight.
- Unplug the set overnight.
- Remove the rear housing
- Use some logic and these tips; look for a separate board with larger than average parts on it and seems closer to the power cord than others.
This will be the power supply.
Check the board over for something that looks like a part number and record it. If you find more than one, one of them will be the bare board number, the second (sometimes on a sticker instead of printed directly on the board) should be the part number for the assembly.
Search for the Westinghouse service company nearest you and call them with this info.
Ask if they repair these or just sell new ones. If it is the latter, don't pitch the old one, continue to look for a repair service that will take it on after you have the new one in place and can watch your favorites again.
The new supply will likely cost between $90 - $150 and with a little common sense, most anyone can remove and replace these in the set.
Expect any repair to cost about the same as a new supply; US technical labor costs more than Chinese assembly labor.
These supplies can be as reliable as the primitive older type but companies refuse to use the high-grade components necessary to give them a long life so they fail much sooner than the old, less efficient kind known as 'linear' supplies.
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