CurtPalme.com Home Theater Forum

[cmjohnson]

Looking for clear pictures of the Marquee neck card type 03-270339-02P.

Not the 01P, the 02P type.

Reason: This specific card type is provided by VDC for use with LUG tubes, or "sim tubes" as they describe it in the literature.

Although it may only be different from the 01P card by the drilled out pin 6 socket hole, it is supposedly also optimized
for use with LUG tubes and "reportedly" it is necessary for LUG tubes to deliver their sharpest performance.

If that is true, with clear photos of this card type vs. the 01P type we should be able to figure out what changes are made
to the card that make it better for LUG tubes.


And then duplicate those changes.

I suspect that the same changes could be applied to the more common 0338 series cards as well. The differences are not great.

[tschaeikaei]

www.curtpalme.com/forum/download.php?id=21948
I don't have the according forum thread, just the download link from google.
Not the best pictures, but certainly not nothing.

[jbmeyer13]

Why not just reach out to Scott? I'm sure he could tell you. Nash has like 100 of those blank cards and I believe Scott gave him a list of all the parts required to build a completed VNB.

[cmjohnson]

The VDC compatibility field bulletin has nothing to do with this. I am not at all interested in the newer but less capable 0340 or 21771 series neck cards.

The photo of the card on the left in that bulletin is also not that of a 0339-02P type. Note that pin 6 has not been drilled,
ergo, it can't be set up for LUGs.

I am only out to compare and contrast the 01P and 02P versions of the 270339 cards, because the 02P version is the one VDC specifically assigned to projectors with sim tubes. (LUGs)

I'm not going to bother Scott about this if someone here has one of those cards on hand and can put up a photo of it.



I'm not at all interested in any other kinds of cards for the purposes of this discussion. They're interesting,
but not what I'm asking about right now for this purpose.

[greg9518lc]

[barclay66]

Hi,

It's neither easy nor pleasant trying to help You. Instead of a snappy response You could at least have had a closer look at the document Julian referred to. Why? Because it yields two important bits of information: First, there is a picture of the neck board You're looking for (03-270339-02P) and secondly the picture shows the differences to the -01P quite obviously (pin 6 drilled out plus additional ground connector)...

Regards,
barclay66

[cmjohnson]

True, that was a bit snappy and I apologize for that.


But all I'm after is a direct comparison of the 270339 cards in both the 01P and 02P versions as delivered and installed by VDC,
so that I can see any and ALL changes made by VDC to support LUG tubes.

Of course I expect the pin 6 hole to be drilled out. What I want to know is what ELSE might be changed on the 02P card as
compared to the 01P card.

I have 01P cards, several of them. But I have no 02Ps.


The photo of the 339 card on the lower left of the bulletin is just not quite good enough for me to be able to identify all component value markings but it is helpful. I would still prefer a few photos made by a forum member, good clear photos made from at least two angles, allowing me to identify every component value marking.

I'm kind of surprised, given how many neck cards I have, that I don't seem to have any 0339-02P or 03P types.
I have enough to completely fill a 24x24x12 box. Most are not working or have parts missing. But I have enough
good cards. I never turn down a deal on cards for parts or repair so I'm kind of stockpiling them. My plan for them
is to refurbish them and offer any good extras to forum members.

Refurbishment included recapping, resoldering, and replacement of the surface mount tantalum capacitors, which are
a part that does age and is often overlooked.


What I'm seeking is nothing more or less than knowledge of exactly HOW VDC modifies a 339 card for use with simulation (LUG) tubes. That's all.



For the purpose of this quest for information, the 02P is the only one I'm asking about.

[Tim in Phoenix]

Guys

Pictures coming of a 270339-01 modded for LUGs, not sure who did the mod, the boards came to me from Evans & Sutherland.

[greg9518lc]

All off mine were 02 version wish you luck

[cmjohnson]

It's the 02 version (270339-02P) that I really need to get a good look at, in its stock from the factory form.

E&S did their own mods on the neck cards. Although interesting, they won't answer the question I'm asking.

Granted, they may be doing mods that improve LUG performance even more, but I want the baseline LUG mod information right
from the original source as step 1.0 in my quest to understand how the circuit has to be modded to work best with LUGs.

AFTER I have that basic understanding of the baseline modifications, THEN I can turn my attention toward other iterations of the circuit.

[greg9518lc]

I have 7 of the 02-270339-02P what I don't understand is the new VDC card that I will picture once more is the best of
the 4 different lug versions I have. The most linear,output,and sharpness.
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