Sanyo projector image problem - InFocus ScreenPlay 4805 Multimedia Projector

Being an old projector and possibly it has an old lamp fitted.
The lamp as it ages produces more heat. The fans as they age unless cleaned regularly. This build up of heat damages firstly the blue LCD imager and then the red.
Nothing can be done about that except replace the LCD imagers.
As a Sanyo Authorised service department, we used to charge them out at £1031 plus fitting.

Had problems with image processor on this model

It's probably you have a busted DMD chip, have your technician replace that, better yet buy a new projector because replacing that chip costs almost a brand new unit.

it sounds like the wire you are using to connect your PC to projector is bad

if color is normal when menu comes up then it is not projector unless the input for your PC is bad

i would try new cable first since that would be cheapest

do other sources in other inputs work???

You need to send your laptop signal to your projector by pressing the FN key and the key that says CRT/or an icon of a screen (this is located at the top of your keyboard). 3l toggles will give you different images. i.e. projector image only, projector image and laptop image or just the laptop and not projector image.

trying to find signal. reset the settings to factory default through the menu. make sure resolution matches and check your cables.

Is the projector permanently mounted or can you move the projector closer to fit your screen. This should do the trick, unless I'm missing something.

hi
I have similar problem with my Sanyo Prox III Multimedia projector.

sounds like you might need to change the KEYSTONE settings

Upon setting up your equipment it is very important that you turn on the projector first. You will see a blank projection image, now turn on the computer, (confirm your cables are connected properly). When using a lap top computer you may need to disable your computer's display screen. First locate the "function" key at the top of your keypad that reads "LCD", "CRT" or it may have an icon that resembles a computer monitor. By pressing the "FN" key and the corresponding "function" key you will be able to obtain the image from the projector only. This is known as "toggling" the image.
for more info check this link http://www.avispl.com/service-support/projector-troubleshooting.asp#2