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I've been repairing TV's for over 15 years and I would say either a bad Tcon's or main board issue. Theirs no need to replace capacitors these days, you can get the main board from $40-60.
Have you tried using different devices on the unit? If your getting a snowy picture on a satellite receiver, check with your provider for troubleshooting guide their unit. Or let me know the provider and I can lead in you right direction.
sounds like you have a cable connection problem make sure your tv is set to dtv signal in the menu screen. when you scan the channels should be displayed as 12.1 or 8.2 not just a single number if the digital channels are programmed correctly then change the cable coming into the tv from antenna making sure that it isnot crossing any power wires good luck and hope that i helped
yes thats is a common problem for all flat tv not only
sharp ;/ first theres is capacitor in power supply
you probly have few one there blow up and it could bee from the power section of your back light circuit
a good technician can fix that easy
Call Sharp for warrenty repair.This problem very common in Sharp tv.Picture will come on turn power on/off button few times will work.But still under Wareenty call to Sharp to replaced the main Tuner Signal board.
Snowy screen, unresponsive to remote control... Sounds like an interference from something. An example... A hairdryer can mess up a CRT really bad. Anything that is likely to create small EMPs will surely mess up your TV and even interfere with the infra-red. Not marking this as a solution, check everything and test the TV. Here's the test: Turn everything off, except for the TV. If it's still doing it then the remote infra-red is just a coincidental failure with the snowy screen. Sorry I can't help you further.
Sharp 42" lcd. TV accessed incorrectly. Resulting in no picture.
Using TV remote, changed from analog 2 to input 4. Turned off TV remote. Returned to satallite remote, turned on TV, turned on satallite, still no picture. We seem to have power but no satallite signal. Ist time users of satallite TV.