CurtPalme.com Home Theater Forum

studio · Joined: 24 Mar 2006 Posts: 191

When I turn on my pj I get the snow like in the pictures. Any cue what cause this? Thanks

roland@b4 · Joined: 07 Jul 2009 Posts: 82 Location: Reading UK

Try not shaking the projector so much Smile

That Green image is troubling. If that is concentrating a spot in the cerntre it will toast the tube

do you get this with the internal pattern ?

Tom.W · Joined: 09 Mar 2006 Posts: 6635

Now that's a new problem I've never seen...... What is your source and what do you see on the Red tube ?

As Roland says the Green tube looks pretty abbynormal !

Shocked

studio · Joined: 24 Mar 2006 Posts: 191

All three guns are like this. When I first turn it on is the worst. It seems as it warms up it gets less. They are pretty much equal far as the amount of snow. These images are without lens. These happen to be with my new HDFury that I received Monday. I was getting it before when driving with just the computer. Sometimes when I turn it on and it has the Logo screen the snow flickers from snow to no snow. The other day when driving with the computer there was no snow. My camera can not replicate the contrast range that the pj is putting out, thus what you see on the green image. The image was of the loading menu on Ironman, it's a pretty hot image, huge contrast. I do get the snow when I go into the adj screen and the internal pattern is there.

roland@b4 · Joined: 07 Jul 2009 Posts: 82 Location: Reading UK

I'd say this is lying in the video circuits. I would look to the RGB driver board

**Curt Palme** · Posted: Wed Aug 19, 2009 12:50 pm Post subject:

It could also be SMPS or HV arcing maybe? Never seen that before.

drice1234 · Joined: 07 Oct 2006 Posts: 1309 Location: Allen, Texas

I started getting something similiar to this with my D50 when I installed a new receiver the other day and ran the hdmi through the receiver and not the hdmi switch. I am getting the snow part, not the bright part in the center. I am going to run it back through the switch tonight to see if the receiver is causing the problem.
Dan

r.bauer · Joined: 08 Apr 2006 Posts: 280 Location: The Netherlands

It might be a simple problem such as HDMI-interference.

What do the internal generated patterns look like?
What does an analog source look like?

studio · Joined: 24 Mar 2006 Posts: 191

Just after turning it on I hit the adj button and I get the internal pattern with no snow. If I go to port 5 I get the snow but it is very random. I do not have port 1 & 2. It was a simulator machine no quad board. How would I feed it with a analog source?

**Curt Palme** · Posted: Thu Aug 20, 2009 2:13 am Post subject:

Get an SVGA cable to 5 BNC and use port 5 instead of the HDMI. I thought you said above you already tried the analog input with the computer? If you've only been using HDMI, then try an analog signal. I'll bet the problem is HDMI related.

studio · Joined: 24 Mar 2006 Posts: 191

Yes I did try the computer to 5 bnc and it has the snow also. It comes and goes.

**Curt Palme** · Posted: Thu Aug 20, 2009 3:00 am Post subject:

Ok, I'm guessing HV arcing somewhere. Disconnect the HV leads to the tubes one at a time from the splitter. Check the focus block HV connection from the quadrupler at the focus block. After that, you'll need to swap some boards, or send some to me for testing in a set here.