CurtPalme.com Home Theater Forum

[7supersprint]

Hi All,
Can I swap the 9" tubes out of a 1209S into a 1208S/E?
I have a good working 1208s chassis with not so good tubes and a set of excellent tubes from a 1209S. Would be nice if I can get this working together.
Thanks.

[Decibel]

I think yes, but you will need to make some modifies to the chassis and change lenses.

[7supersprint]

Thanks. I also have the 1209 chassis and lenses so that should be no problem at all.
However there is something else. The 1208 neckboards doens't fit. Well they do fit on the tube end but are 180 degrees rotated so the heatsink is pointing down en doesn't fit in the chassis. 1209S neckboards would solve this but can I use them? Connectors of the 1208S/E and 1209S neckboards look the same to me.

[Decibel]

[7supersprint]

I have a complete 1209S and a complete 1208S/E. Both are working but the 1209S has a focus problem. It a Seos modified 1209S and you can read the story about the focus problem here: http://www.curtpalme.com/forum/viewtopic.php?p=397630

The 1208 is working fine and my idea was to put the tubes of the 1209 into the 1208 chassis to get rid of al the Seos mods.

Another option as you suggest is to put all the 1208 boards into the 1209 chassis. I have to use the 1208 controller board to get rid of the Seos software but wil this work?

Thanks for your imput!

[Decibel]

I don't know if SEOS units have modify in hardware/software. I'm sorry.

[digitalayon]

wouldn't it be easier to move the 1208 stuff into the 1209?

[Curt Palme]

What I would do is swap all the 1208 boards into the 1209 SEOS set one at a time to see if you can fix the focus issue.

Change everything, including the controller board. This is a very strange problem for sure. Heck, change over all the yokes as well. You might even try dropping the worn 1208 tube into the Seos unit, just to see if that cures the focus issue. I don't think it's the tube, but I'm still running into unique problems, even though I've worked on 1000s of sets and boards over the years.

If the focus problem still doesn't go away, it would narrow the issue down to the motherboard. I have never swapped one over, but I THINK (big caveat on 'think') they are the same. I do believe the motherboards are riveted into place though, so at that point swap over the chassis components. I think the two sets are similar enough in design that you could ultimately drop the 1209s tubes into the 1208, but I'd do the reverse first.

[Curt Palme]

What I would do is swap all the 1208 boards into the 1209 SEOS set one at a time to see if you can fix the focus issue.

Change everything, including the controller board. This is a very strange problem for sure. Heck, change over all the yokes as well. You might even try dropping the worn 1208 tube into the Seos unit, just to see if that cures the focus issue. I don't think it's the tube, but I'm still running into unique problems, even though I've worked on 1000s of sets and boards over the years.

If the focus problem still doesn't go away, it would narrow the issue down to the motherboard. I have never swapped one over, but I THINK (big caveat on 'think') they are the same. I do believe the motherboards are riveted into place though, so at that point swap over the chassis components. I think the two sets are similar enough in design that you could ultimately drop the 1209s tubes into the 1208, but I'd do the reverse first.

[7supersprint]

Thanks for the imput Decibel, digitalayon and Curt. Very very helpful!

I will swap boards one at the time and see what happens. There are a couple of boards in the Seos that have been modified and have other part numbers. I found out that almost all of the 1208S boards are the same as in a non Seos modified 1209S so if I swap these it looks like I can transform it back to a original 1209S configuration.
I also think it is not a tube problem. Green, red and blue have the same problem. Maybe Seos used external control software for focussing...

One specific question: Are the controller boards with the same partnumber but without the two software chips the same? Or to put in other words: if i change the two removable 1208 S/E processors for 1209S ones than it is a 1209S processor board?

At this moment the 1209 is from the ceiling and I can't project an image at this moment so it is a little harder to see what is happening. I don't know if I can see the focus problem by viewing through the lenses and give a good opinion about what is happening when I change boards but I will try!

[digitalayon]