It has double images. The words are doubled even, appearing blurry. We are currently playing a DVD "daddy daycare" The words on the car are unreadable because they overlap. At the bottom of the screen it has choices Play Movie Scenee Scenerio etc and each one has a different color shadow above it-making them barely readable.

Hi Cani
Assuming that the Keyboard keys are all functioning, I would try changing the current Font to something else to see if this changes the fault. You could also try re starting (Reboot) your machine in Safe mode, to see if the fault disappears....
Safe Mode:
http://windows.microsoft.com/en-au/windows/start-computer-safe-mode#start-computer-safe-mode=windows-7

Check first if you have not done so to see if the same issue when playing a DVD connected to one of the rear audio and video inputs.

Also let me know if using a box for signal as it could be the issue.

Look for a 9 pin or 15 pin plug on the side of your laptop. You can connect an external monitor to these type of jacks . If the display on the external monitor is clear then your laptop display panel is the culprit.

give the lens a clean with a soft cue tip or cotton bud with methalated spirits.should be fine after that,its a reading problem,and even the finest of fur or dust can cause this

have a dvd/vcr combo,double image on tv when dvd is played, vhs works fine.

Try reducing the screen resolution to 1/2 of what it is now!

Just to clarify, it sounds like what you are saying is that the image appears to duplicate in either red or blue along the edges of the image (especially white lettering and probably increasing along the boarder of the TV). This is resolved by converging your TV. Convergence will drift normally on large screen projection TV's over time or through moving them. The Hitachi 57f500a has a feature called "Magic Focus" (pg 36 in your manual) which will auto converge the image. If the auto converge feature doesn't work, on page 37 in your manual, it explains how to converge manually. If you do not have the manual, I have the image of the pages below. If for some reason this doesn't work, please provide additional info and detailed prior to rating the help.

My mv303 karaoke machine words from the song on screen seem to go double image miss letters in the words while reading and singing the song. Is it the cdg itself that is worn out or what is it?

Just click below for convergence repair kit;

http://servicemanuals.vstore.ca/

Double images and colors are blurry .Blue,red and yellow wave coming up from the bottom of the screen on the lower left symptom is for busted convergence IC,you must replaced this IC in order that will works better again.STK 392-xxx ICs and it's associated resistor,this resistor automatically change value,can caused truoble even though you change the ICs.If you bring this to a service center they cost you $600 to $700,but if you buy the repair kit you can save more,don't wory it is very easy because there is intallation guide including in the repair kit. Feel free to ask whatever the result... click the link for sample picture guide step by step installation;

Hope this may help;

Regards,
VOTIT

sounds like loose connections on the convergance amps ic's
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html