View Full Version : Optoma H79 Image Problem - Screenshots included please HELP


manphibian
01-23-08, 11:52 PM
Hi guys

I have a Optoma H79 pj, whenever I turn on the pj I get pictures the the pics included below. I am using a HTPC thru DVI connections but this happens no matter what source or what connection I use. Should I upgrade the firmware? Is there a firmware upgrade available at all?

http://i234.photobucket.com/albums/ee299/manphibianx/prob2.jpg

http://i234.photobucket.com/albums/ee299/manphibianx/prob3.jpg

http://i234.photobucket.com/albums/ee299/manphibianx/prob1.jpg

http://i234.photobucket.com/albums/ee299/manphibianx/prob4.jpg

Please help

peter*grimes
01-25-08, 04:39 AM
Bump

Because you deserve the help that I cannot give.

Gary Lightfoot
01-25-08, 06:13 AM
I doubt it's the firmware if it was working perfectly with the existing revision

Could possibly be a color wheel timing problem or perhaps a video processing issue. You can access the CWI via the menu, but I doubt you'll be able to fix it if a controller is faulty and needs replacing. Whatever it is I think you may need to send it back to Optoma for a repair as it's unlikely to be something that can be fixed externally.

I take it the splash screen is like that even with no inputs connected?

Gary

manphibian
01-28-08, 06:42 PM
no it happens only when there is a connection in it.

Gary Lightfoot
01-28-08, 07:09 PM
So the splash screen looks normal until you add a connection, and then it flares like in the pics? Is it all connections or a specific input?

Gary

mark jana
01-28-08, 09:57 PM
I own a H-77 and it appears I have a similar problem. Two weeks ago, the picture would flicker after an hour of use. Currently, the "green flicker of the image" starts after 2-3 minutes of use. I tried HDMI, S-video, RBG, all the same. I searched the forums under h-77 and found similar problems in the past. I will call Optoma tech support tomorrow and keep you posted.

guitarman
01-29-08, 01:38 AM
You could try a auto-calibration from the service menu. What you do is have a full white or full black IRE pattern from Avia going and hit the corresponding auto cal white or black. Do both white and black. I saw a problem just like yours on a H77 and fixed it with the auto-cals.
Also do not do the auto-cal color, ever. :)
good luck

C17 is the last firmware for the H7x series.

guitarman
01-29-08, 11:02 AM
To use the auto-cal feature you need to send the PJ a component signal. The option will be under ADC.

manphibian
02-06-08, 10:20 PM
where can i get the latest firmware for the 79 from?

robbyrockets
02-07-08, 12:18 AM
Had the same issue with my H78DC3, it turned out that it was overheating due to the filter being clogged.

Another thing that may cause what you see is that you need to adjust the wheel speed in the ISF menu.