Question about Sharp Televison & Video
Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Pull up older posts or search the site by type in the brand name of your set, at its search box at the right column.. It will be best to replace the inverter board as card basis.
Posted on Apr 16, 2021
SOURCE: TV Picture Goes Black
I had the same exact problem.
I removed the bulb and cleaned it. There is a small screen at the top of the bulb and it was covered with dust. Once it was cleaned I replaced the bulb and it solved the problem.
Thanks to those who posted the solutions
Posted on Sep 14, 2008
Your control board seem's defective or the inverter board (associated circuits) are bad. This is common in most TFT-LCD Tv's.......
Posted on Dec 01, 2008
I'm going to guess your friend's model is LC-37D64U. ( 37" screen; D64 series)
It's sounding like a power supply problem for the LCD screen. It's somewhat common problem for big LCD screens. But, too early for your friend to be having this problem with the TV.
I would have your friend use the warranty at this point. Last thing you want to do is void the warranty by opening up the TV.
I would first try leaving the TV unplugged for 30 mins so it can reset. Then, try turning it ON again.
If that doesn't work, it warranty time.
If your friend just bought it, have them exchange the TV for another one. I wouldn't want a TV that has problems that just came out of the box. The Sharp TV only has a 1 year warranty. Upgrade warranty life if possible. A repair for a problem like this would cost about $100 for someone to look at it; and $200 to $400 for the part at a TV repair shop.
Posted on May 12, 2009
The TV is trying to go on protect mode because an internal fault had been detected. For that reson the protection circuit keeps turning off TV continuously.
Try first leaving the TV power cord unplugged for some times, let say one hour or so.
Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.
If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.
The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.
1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.
2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.
If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.
If you are in situation 2 , then there is an internal fault.
Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.
Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.
If under warranty contact the manufacturer ringing the number on the user manual
Posted on May 23, 2009
Tips for a great answer:
Mar 01, 2015 | Sharp Televison & Video
Nov 06, 2012 | Sharp LC-32AV22U 32 in. LCD TV
Nov 03, 2010 | Sharp Aquos LC-45GD6U 45 in. LCD HDTV
Oct 24, 2009 | Sharp Televison & Video
Apr 07, 2009 | Sharp LC20SH7U Television
Mar 29, 2009 | Sharp LC-32D41U 32 in. LCD Television
Jul 23, 2019 | Sharp Televison & Video
Usually answered in minutes!
Step 2: Please assign your manual to a product: