CurtPalme.com Home Theater Forum

[JustGreg]

Sorry...sad play on words but I worked a long shift.

I'm still battling compressed image ouput across all three tubes on the left sides. I've changed out EVERYTHING except the backplane, motherboard, and magnetics.
I won't resurrect the original thread but for those just tuning in, the internal grid pattern on my Marquee 8500 is compressed slightly on the left side of the tube faces (looking at them with lenses removed). It isn't much and can be adjusted out but I'd rather not.

Looking at the grid on the screen the left side dips up at the bottom left and down at the top left beginning from about 2/3's of the way across from right to left. Not a lot as I said, but enough to trip my OCD trigger.

It looks like what you'd see if you held a playing card flat on to your sight about a foot away and then rotating the left side away, while maintaining a vertical center pivot. I had a Sony HS10 that had adjustments for this but they called it Keystone. Marquee keystone is different in that it flips the 'playing card' from a midpoint side horizontal point.

Now the question...I haven't swapped in magnetics from deflection on back yet (on any tube) because I just got all three new tubes from two different people. They never complained of this 'phenomenon' and are standup people who would have told me if they did.
The red tube has never been used, the green and red have ~ 20 hours on them. Could one bad convergence coil 'backfeed' to cause the problem in all three tubes? And if not the convergence coil could the focus or H deflection do it?

I know...I'm grasping at straws - but in the Land of Deaf People the Man Who Can Hear is King. Can anybody hear me?

[Nashou66]

Do you have another CLM to test? After looking at a locals 9500LC here that has a weird convergence issue it led to a bad CLM.

Athanasios

[tse]

The three horizontal deflection windings are connected in parallel (by the HDM) so if one is bad it can induce problems in the other two.

I haven't read the other thread so I don't know what you have done. Have you tried disconnecting the convergence coils from the convergence amplifiers to see if the problem is coming from there?

Scott

[virusc]

What about the horizontal linearity adjustment? Does this have any effect?

[Curt Palme]

Can you link to the other thread please?

[Curt Palme]

Can you link to the other thread please?

[mp20748]

I remember the thread, and the plethora of suggestions to solve the problem. I started to chime in then, but when it got on the magnetized strut and magnetic fields, it got a little too spookie for me.

The problem is the CLM (control board) - but the CLM IS NOT defective...


I'm going from memory here, but have seen this problem before, and in most cases simply tweaked around it.

There's a history involved here if my memory is correct. Over the years the Marquee before having the VDC label on it, went through a series of chip changes. In the pursuit of making things better, they came out with various chip upgrades. Some of these chips were very short lived because they created some other problems. And during this process, I'm sure not all of the CLM's had the chips removed that were failed beta or they later found to be a problem.

The main chip for this was U35, which had about four versions of it for version 4 or 4.2 It was something like, 4.2a, 4.2b, 4.2c etc.

Anyway, the problem could be two fold. You'll either need to check the entire chip version starting from the CLM and DPB to that of the HDM and Focus or even VERT modules being used.

On the CLM you'll need to make sure the deflection processor board has the right version chip for the Focus module, HDM and that it also lines up with U35, which is the main determining chip for the ULTRAS, therefore was very necessary for it to work properly with the Ultra DPB, VERT, HDM and FOCUS boards.

I don't remember a lot on this, but if there's a difference in some of the chip versions, it could cause some unusual problems.

OR

You could do what I've done and simply work around the problem.



That problem is not magnetic, coils, strut or caused from a demonic force. It's generated from the CLM, and most likely caused from having the wrong version chips on one of the boards.

[JustGreg]

[CZ Eddie]

I think you're right about wanting everything as good as possible "out of the box". If you have this problem, then who knows how it could affect long term stability or what other problems there may be that you won't know about until you fully set up the projector and run it for awhile.

I know there are some non-Ultra boards that won't work well with Ultra boards. But I don't know of any other issues.

Have you tried running just one tube at a time, with the other two completely disconnected from the chassis electronics? That should rule out one set of magnets causing problems for the others.

[mp20748]

[mp20748]

I have more to find on that version U35 chip, but for now this is what I've found:




MODULE DESCRIPTION Marquee 8110/8500/9500 series Software.
CLB U35 (version 4.1 Main)
CHANGES SINCE 4.0E SOFTWARE

1. Changes to support Marquee 9500HS model.
2. Binary RS232 commands added to provide support for color temperature setup.
• SCT (0X0E) select/request current color temperature
• CTM (0X52) set/get color temperature values
• CNM (0X2E) set/get contrast modulation (zone contrast) values.

COMPATABILITY ISSUES FOR 4.1 SOFTWARE.
U16 on the CLB (02-263336-03P) must be at version 3.1 (IOP).
U7 on the DPB (02-250306-08P) must be at version 5.3 or higher.

SOFTWARE KIT NUMBERS

03-900000-02P Includes U35 (V4.1), U16 (I3.1) and Marquee Librarian and Languages (V4.1).
03-900001-02P Includes U35 (V4.1), U16 (I3.1).
03-900015-01P U7 (5.4)

[mp20748]

MODULE DESCRIPTION Marquee 8110/8500/9500 DPB software U7 (version 5.4)

CHANGES SINCE 5.3 SOFTWARE

1. Correct the vertical sync measurement above 291us. This solves the problem discussed in ISA 97-20a.
2. Focus start pulse defaults have been changed to 65% of the original value.
NOTE: Due to the change in start pulse defaults, the dynamic focus will need to be readjusted when U7 is replaced.
COMPATABILITY ISSUES FOR 5.4 SOFTWARE.

Needs 02-263336-03P control board and a 02-250306-08P deflection processor board.

SOFTWARE KIT NUMBERS

03-900015-01P D5.4 for the 8110/8500/9500.



---------------------------





MODULE DESCRIPTION CLM [8110/8500/9500/9500 DM]

MODULE PART# 02-270336-03P Control board with DPB
02-280336-03P Control board with DPB\STIG
02-280356-01P Control board with DOME DPB\STIG

SERVICE PART# 03-263336-03P Service Control board only

ISSUE LEVEL UPGRADE Not Applicable

FAULT DESCRIPTION 1. Corrects the operation of standby off when using programmable events.
2. Reduced source change blanking time from 3 sec. to 1.8 sec.
3. Fixed ASR problem, if you switch to a unused input then connected the input the ASR was not triggered to select a input.

COMPATABLITY No effect on the compatibility with other modules


PARTS REQUIRED

PART NUMBER QUANTITY DESCRIPTION LOCATION

14-P33635-25P
1
V4.0c
U35


UPGRADE PROCEDURE

1. Replace U35 with a the 4.0c version software .
2. Check that U16 has V3.0 software.
3. Use Marquee Librarian V1.8 or later to load the languages V4.0a

[mp20748]

The one I'm looking for I did not find. I'll keep looking later when I have more time.

It'll show what chip versions you'll need to have depending on the version of U35. As you can see from the previous stuff posted, version 4.1 is the tricky one.

Let me stop here, because I'm going from memory. I'll post back later when I find more on this.

[JustGreg]

[JustGreg]

That's excellent stuff Mike! I appreciate the time you've put into this. I didn't write down the board number formats that are referenced...just the silkscreen'd ones. Going on memory here too I 'think' I have a hodgepodge of boards and chips going on. That would explain a lot but I'll have to dig into it more Tuesday to be sure.

The big question is...if I need to order the chip-up kit(s) is the price going to have me pissing blood? (If they're even available any more).

Thanks again Mike. I'm sure alot of people will be interested in this info.

[mp20748]

[Nashou66]

Greg last time I checked there about 80 bucks for u35 and u16.

Athanasios

[antorsae]

Greg,

I had a similar problem a while ago and it was a defective green deflection coil which was partially shorted. The projector worked but I had the raster severely compressed horizontally. I changed the deflection coil and voila! I understand the deflection coil has multiple windings so you can have a "working" projector even with a defective deflection coil.

In my case it was obvious it was the green one.

Hope it helped!

Andres

[mp20748]

[JustGreg]

[dvh99]

have you tried swapping the vim as well.
or try the 8 different ways to connect the rca connector on the vim
rgb
rbg
grb
gbr
brg
bgr
if you look at the underside of the vim you will see that the connector for the minirca cable has its signal and ground connections very close together on the underside of the vim.
i noticed this when i did the faint line tb fix and just went ahead and bend them a bit with a small screwdriver.

i wont be of much help but since you have tried almost anything i really do not know where to look for.

dennis