CurtPalme.com Home Theater Forum

billqq · Posted: Sat Oct 03, 2009 4:24 pm Post subject: D-ILA DLA G10 - Vertical lines

Hello

I've just got a JVC D-ILA DLA G10 projector (free) but it suffers from a series of vertical lines across the image. I am hoping it's a calibration problem, but any thoughts or suggestions would be greatly welcomed!

The lines appear to be 2 pixels wide and are separated by 3 correctly-coloured pixels. They are regular, but not constant across the full image as they seem to be sensitive to the particular shade being displayed. Certain shades display correctly, but others are corrupted with these lines. The lines are generally the colour of the image that should be displayed (but darker) but white backgrounds seem to show pale pink lines.

I have tried got the Psactrl control software (in lieu of a remote) so hopefully have the tools to make calibration changes, but none of the experience (a dangerous combination!). I'm currently using the Computer 1&2 inputs, but have not tried the AV IN or Y, PB & PR options as don't have suitable leads.

I have tried to add some images showing the lines on a shaded background - hopefully these will explain the problem better.

If anyone has any thoughts/suggestions, that would be great!

Thanks in advance

Bill

PS. I have posted a similar message on AVSForum - Hopefully this will capture different people and isn't considered to be bad form?

[/img]

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

I would try another source before making any assumptions.

ecrabb · Posted: Sat Oct 03, 2009 7:06 pm Post subject:

macgyver's right - definitely try a different source (or two), and try playing with the brightness, contrast, keystone, etc. controls to see if anything is inducing or exacerbating the problem.

If I were forced to guess without doing any testing, I'd put money on a failing LCoS driver or the LCoS chip itself... Unfortunately.

If you got the G10 for free, you might be able to find a cheap G10 with a dead bulb, and just move your good bulb over.

SC

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Ya know...this is what pisses me off with digital projectors and Tv's. In searching for info on this projector I find that the lamp is at least 700.00 dollars and has a life of 1000 hours.

I would take that projector, toss it in the air and see how many pieces a baseball bat would turn it into.... Confused

I can see you wanting to get it working since it was free but just remember the lamp life and cost, in your efforts..... Thumbs Down

ecrabb · Posted: Sun Oct 04, 2009 1:09 am Post subject:

**AnalogRocks** · Posted: Sun Oct 04, 2009 1:18 am Post subject:

Try adjusting the phase controls. That sometimes affects banding. As the other guys have said try a different source and if possible a different input.

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

That is insane!!! You figure tubes in a crt can go much longer, but lets say 5k hours is when you might want to re-tube, at 1000 per tube its 3000 for 5000 hours with that PJ it be 3750. Crt still wins, and if you add the ratio of tube bulb cost/Projector cost when new in that same time frame CRT does even better, especially if you have 75k Cine 9 or the 60k+ G90.

Athanasios

**AnalogRocks** · Posted: Sun Oct 04, 2009 1:19 am Post subject:

All true guys or he can use it 'till the bulb goes out and sell the projector as in on CL for $50 Very Happy

ecrabb · Posted: Sun Oct 04, 2009 1:28 am Post subject:

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

But if you add life of the PJ into the total cost of operation, and the repairability factors, then the CRT will still win, oh yes and pic quality is not even mentioned Wink

Athanasios

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Your guys calculations are assuming that the projector itself survives through multiple bulb changes. Which it probably wont....... Thumbs Down