20 Most Recent Sony VPL-EX4 Projector Questions & Answers

Hi Douglas.Try going into your display settings and change your screen refresh rate/display. If your screen refresh rate is too high/too low this will cause your issue. Also check your screen resolution. Hope this helps.

some models has another NOT. However you must read your owner manual or download from www. fitness.manualsonline.com or www. retrevo.com Merry Christmas

Check fan cable

Hi,
I have a copy of the service manual which contains service information - electrical adjustments - troubleshooting - spare parts - block diagram - frame schematic diagram. If you want the copy, let me know your email add and I will send it to you for free.
Jdvillanueva

You can make all sorts of adjustments. From your description, it sounds like the contrast and brightness are mis-adjusted.

If you do not have the manual, you can download it from here.

Best of luck, Jim

PROBLEM: The fan is broken
If any fan in the projector not move, broken, jam, the power light blinking 4 times after few second of power ON
SOLUTION: Remove the filter and then remove the upper cover
check fans and fan connector
if all fans are OK then remove the fan connector and reinstall
fix the cover and power ON projector

Data projectors don't need any drivers.

if you are using a laptop,hold down function and press the display key until it clones both screens,if you are using a computer,make sure the connections are secure,also try and make sure that the source is from the computer/laptop and not s-video or component video.

also try replacing the vga/dvi cord.

open up the top case. the fuse will be on the power supply board right next to where the power cord plugs in. you'll need a continuity tester to test it. if it is blown, replace it with the exact size and type. if it is not blown, replace the power supply.