Question about Sharp 20F540 20" TV
Assuming you have a standard TV with a CRT and not a projection set up. Those three circles you describe could mean the CRT has been magnetized. There is usually a "deguassing circuit" that operates only during the first few seconds the set is turned on. If this cicuit is not operating and the set is relocated (in relation to the earth's magnetic field) it could cause residual magnetism in the metal elements of the CRT that could cause the electron beams to be "pulled slightly" away from landing where they should. The picture information itself will be there but the colors can't be right. We used to have large coils called deguassing coils in our tool box to demagnetize and nuetralize this magnetic effect - but then they invented these wonderful built in circuits. If could also be a major problem with the CRT itself. The shadow mask inside it could be warped out of alignment - solution for that is a new CRT. TVGUY
Posted on Jul 26, 2006
Any chance for a screenshot? The three colors are the three scanning electron guns firing on the screen instead of painting a picture, and yes, this is major repair. Not sure if it will be worth the repair cost, but you could get an estimate if you like the picture the set produces, when functional. Good luck!
Posted on Jun 21, 2006
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Sep 24, 2015 | Emerson 42" Plasma Tv Pl-p42w-10a 720...
Jul 16, 2011 | Televison & Video
Dec 01, 2010 | Philips CCB130AT 13 in. Combo
Nov 21, 2010 | JVC AV-27230 27" TV
Sep 05, 2010 | Televison & Video
Oct 26, 2009 | Sony Grand WEGA KDF-60XBR950 60" Rear...
Aug 31, 2009 | Hitachi 60SBX78B 60" Rear Projection...
Dec 24, 2007 | Televison & Video
157 people viewed this question
Usually answered in minutes!