I have my Sharp AQUOS LC-46D85U connected to my Nvidia GeForce 6200 graphics card with a Dvi to Hdmi adapter to clone my PC screen on my TV. The problem is, while I get a signal with no problems and everything looks good, the screen on my TV randomly seems to lose the signal and has to refresh. A lot. I have no idea what triggers it, although it bizarrely seems to happen when there is more "white" on the screen. So for example I can usually watch a movie or play a game with no issues, but a full screened text document or using a web browser can make it go crazy, shutting off to black and turning back on every few seconds. I've tried various resolutions, and it still happens on every one of them.
I've put up with this for years now, and despite countless searching I never found anyone with a problem even remotely similar to this one. Does anyone have any idea what the heck is going on?
I bought a newer Dvi to Hdmi cord a couple years ago with no better luck. So I know it's either the TV or the graphics card. Both are on their newest firmware.
I have no PCI-Express slots on my PC so I can't even try out a decent budget card to isolate the problem, I basically would need a whole new PC since mine is so obsolete. I also have no other TVs with HDMI input to test on, making this entire thing a nightmare to problem solve.
The reason I'm asking all this now is I'm looking into getting either a new TV or computer. If I buy a new computer and it still does this on my old TV, or vice versa, I'm liable to smash the whole lot with a sledgehammer.
it seems that your tv is looking for the "handshake" via HDMI and is not getting it (because it's actually DVI,) then resetting
update your computer with a card that has an HDMI output or both computer and screen - your tv is HDMI 1.3 compliant, almost any one you purchase today will be 1.4
Unfortunately doing that would require replacing my motherboard for a PCI-e slot, as I've never seen a PCI card with HDMI output. Then I'd have to get a decent card, and probably be forced to upgrade my PSU for the new parts. At that point I'd be better off getting an entirely new PC. That's something I wanted to avoid before I knew for sure what the problem was.
I think my only option at this point is to borrow a laptop with HDMI output from somebody and make sure it's not an issue with my TV.