CurtPalme.com Home Theater Forum

[jbmeyer13]

I have done a search on this and conversed with Tim and Dragan briefly on the topic but thought I ask this on the forum as well. I tried the tech tip on Tim's site but it didn't do the trick.

I have very faint banding after my convergence and have played with the linearity and BOW to try to eliminate this but have not had much success. In fact the adjustments only seemed to make the banding more evident rather than less noticeable. I read about Mike Parker's supposed mod to the CLM but have no confirmation if this actually works, if it's vaporware, etc.

For those that had banding and eliminated it, what did you do specifically and how long did it take you? This is my first set up on the PJ and if possible I'd really like to get it right.

I have enclosed some screen shots of my test patterns but it's very hard to photograph the banding.

[Nashou66]

There is a CLM add on Chip mod that MP was or is doing that was developed by one of VDC's engineers.

But there is a way to avoid banding with a perfect mechanical set up so you end up using as little electronic
convergence and geometry controls as possible.

Be ready to spend hours and hours of sweat, frustration and exhaustion to get it not to band. Some machines are easier to avoid Banding than others, hopefully yours will be easier.

Athanasios

[Tim in Phoenix]

Hello

My approach would be to reset a spare memory, look at white field just on green, then run bow, and V linearity, and the other geometry controls one at a time from 50 to the values you used to align your grid, and see which control(s) are the villains in your situation.


.

[draganm]

last I heard DBcooper was the one actually doing this CLM modicification and everything I read here said the work was first class.
Question is though If it's that hard to photograph will you ever actually see it in a movie?

[Tom.W]

I assume ground loop has been ruled out.

[jbmeyer13]

[Nashou66]

Both my Ultras in the blend band. I have the chips to do the mod but no ambition to do it.


Athanasios

[Tim in Phoenix]

[dvh99]

add me plz

dvh99@hotmail.com

edit: pm here on curts site is fine too

[Nashou66]

Here you go guys:

Here was its first mention

https://www.curtpalme.com/forum_archived/viewtopic.php@t=20850.html

Then later mike came up with a price range in this thread I think.

https://www.curtpalme.com/forum_archived/viewtopic.php@t=21198.html

I got my one chip from Dragan who was first approached to add this mod to his Dragan HD mods, The second I got from a friend of the VDC EE. Drag said it was a little to detailed work and he'd have to save each persons settings etc. too much work. He then offered it to me but I just didn't have the time. So then MP ended up with it, and from what Dragan mentioned, but I am not sure, DBcooper is doing them for Mike?

It was About February of 2010 when all this came to my knowledge some some details might be wrong.

Any how I am not sure if anyone has had this done yet.

Athanasios

[km987654]

Is this a contrast modulation problem??

[Nashou66]

[DB Cooper]

We never had any firm requests or enough requests for this fix, so no parts were ordered and nothing further was done.

[dvh99]

isn`t it possible to replace the u44 chip with a later revision firmware?
or just update the firmware via the rs232 port.

[draganm]

[dvh99]

i wanna buy the chips to do this, but i want to do this myself.

i need 2 eproms and two dacs.
make that 3 of both.

wait i see now that the dac is lifted on one side.

[jbmeyer13]

[Tim in Phoenix]

[Nashou66]

I can answer #2

All setting will be lost so you will have to do an electronic set up again. To avoid this you can use the marquee loader program.

here is a link to the latest version from my iDisc

https://files.me.com/nashou.66/sjl1c9

its up for 30 days.

Athanasios

[jbmeyer13]