Question about Sharp Televison & Video
Posted by Anonymous on
Check power settings see if on delay if not possible bad power board
Posted on Oct 22, 2019
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Posted on Jan 02, 2017
SOURCE: Power problem
OMG!! I had the exact same problem! I unplugged the TV to paint and it stopped working with a flashing green button. I ran my fingers along the bottom of the screen and it actually worked.. wow THANKS A TON!!!
Posted on Jul 06, 2008
Go buy a CRT television for $200 and chunk that HD TV. All of them are made in China with the same poor quality. Why seemingly smart Americans would pay good money for such junk is beyond me. The LCDs are a cash cow for the monitor and TV industry as they are well aware the inverter boards will fail within 3 years time. The old CRT tvs will work for the next 15 - 20 years without failure. Get you a good ole 36 in sony black stripe tube and kiss the LCD crowd good by.
Posted on Nov 28, 2008
There are steps listed in the user manual which can be downloaded from:
You also need to hold the power button when plugged back in. If that doesn't work, there is another step as well.
Posted on Aug 25, 2009
SOURCE: My LG 42"tv shuts off by it self
The best way to fix this is by opening the back cover of the television set.
The power light may be flashing or if you are runing with a series light bulb it may be cycling on and off continuously. There may be a chirping or clicking sound from inside the set. (Note: using too small a series light bulb load during testing for the size of the TV may also result in this condition.)
If there is a low voltage regulator or separate switching supply, it could be cycling on and off if the horizontal output, flyback, or one of its secondary loads were defective.
Does this TV have a separate low voltage regulator and/or switching power supply or is it all part of the flyback circuit? For the following, I assume it is all in one (most common).
Some simple things to try first:
Verify that the main filter capacitor is doing its job. Excessive ripple on the rectified line voltage bus can cause various forms of shutdown behavior. An easy test is to jumper across the capacitor with one of at least equal voltage rating and similar capacitance (make connections with power off!).
Use a Variac, if possible, to bring up the input voltage slowly and see if the TV works at any point without shutting down. If it does, this could be an indication of X-ray protection circuit kicking in, though this will usually latch and keep the set shut off if excessive HV were detected.
Posted on May 20, 2010
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