Good day!!!!
That problem is usually cause of faulty capacitors on the power supply board..
Just follow this instruction to fix your TV..
1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3.
After that,,try to look at the actual image of capacitors if it is
bulged on the top so that you can easily determine the bad capacitors..
4.
After that,,try to replaced the bad capacitors using soldering iron and
soldering lead..replaced the capacitors only with the same type ratings
and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter
SOURCE: Sharp Aquos 37" picture
Those lines are because of "Interlacing". a REALLY bad case of it. what are you watching when this happens?
SOURCE: sharp aquos 46 picture disappears intermittently
it might mean there is an intermittent connection or cold solder joint somewhere inside the set.
But I wouldn't just settle on that.
Here are some other things to check:
1) Replace the batteries on your remote control.
2) Try resetting the logic functions on your tv by unplugging it for a minute, then plugging it back in.
3) Try covering up the infra-red receptor on the front of your TV to
see if you're getting unwanted signals from the receptor. taping a
piece of foil over that area is perfect. If it doesn't stop after doing
these two things you'll probably need to take it to a shop.
4) If this does stop it, then look for unexpected signal sources. Have
you added a remote control extender? Added a new device to your
audio-video system? Changed to a new remote?
Here is what I suggest:
ONE: Give it a hard reset. Possibly the software codes in the power
management are corrupted. Just unplug the tv line cord for 4 hours.
That will reset everything internally to factory defaults.
TWO: Give it the old whacking test. Just bang on the cabinet in many
places with your hand or fist. That will restart any cold solder joints
or loose connections.
THREE: If the above procedure does not help, then you will have to call
in an expert tv tech; OR just live with it and put in a line cord
switch so that when it is OFF, it is really OFF.
SOURCE: Sharp Aquos LC-46d65U HDMI connect
First off a little tip that manufacturers don't tell you is that you HAVE to TURN OFF the POWER to ANY UNITS that you are Connecting to via HDMI!!!!!!! If not you can short out the Inputs!!!!!!!! HDMI is usually Automatic, But sometimes you need to go into the Menus on all Devices to the HDMI section and write down their settings and compare them. Any definition that you are not sure of check the Manual or Google it! Match all the Settings (there won't be Much!) Hopefully the Inputs were not Damaged it only takes one time to short it out and then the Repairman makes a few bucks! Good Luck!
SOURCE: What are the best picture settings for the 52" Sharp Aquos LCD
I'm happy with:
backlight +16
contrast +40
brightness +1
colour -13
tint 0
shaprness +2
although I found this setup but haven't tried it yet
backlight +5
contrast +24
brightness -7
colour +50 (review I found didn't say + or -. Try both
tint 0
sharpness -5
Len
SOURCE: Sharp lc-32sh12u...no picture
It can be either the LCD panel driver board, or the worst case is bad LCD panel.
Testimonial: "Thanks for the response. I found a PWB board, a Power board and an AV board. Would one of these fix the problem?"
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