8mm Forum: It's an ST-1200 fest on 8mm Forum

This is topic It's an ST-1200 fest on 8mm Forum in forum 8mm Forum at 8mm Forum.

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Posted by Jim Bishop (Member # 81) on September 24, 2004, 09:20 AM:

Good at going on the blink, aren't they? Shame, as they're so good when they work.

New problem:- for no apparent reason I suddenly couldn't get any kind of focus, just a small blur. I'm sure I've just messed up something simple, but I've tried all I dare without losing my rag.

Anyone figure it out?

Cheers
Jim
[Confused]

Posted by Tom Photiou (Member # 130) on September 24, 2004, 12:16 PM:

Jim, what have you tried so far? Have you moved the lens holder in any way, I;l be glad to e mail you the exploded digram and fault page of the repair book if you want to e mail me? [Razz]

Posted by Chip Gelmini (Member # 44) on September 24, 2004, 03:42 PM:

I would ask if you removed the lens to clean it, perhaps it is not aligned correctly. Remove the lens and try to re-install. Do this gently. DO NOT pull on the focus knob. Turn the knob to 3:00pm position and it (the lens) should slide right out. Keep the knob at 3:00pm position and slide the lens back in till it almost "click" stops. Then try adjusting the focus later. Remeber...do everything GENTLY.

Chip G

Posted by Chris Quinn (Member # 129) on September 24, 2004, 04:17 PM:

You haven't by accident got some grease on the rear of the lens????
Just a thought!

Chris.

Posted by Dan Lail (Member # 18) on September 24, 2004, 06:53 PM:

Do you wear glasses by chance? [Razz]

Posted by Tony Milman (Member # 7) on September 25, 2004, 02:48 AM:

Jim,

Are you able to increase and reduce the size of the "small blur" when rotating the zoom? How small is small?
Will the lens move back and forth fully when you rotate the focus knob?
It sounds as if the lens is sitting too far forwards from the back of the lens holder which might explain the out of focus and small image.

Can you take digital pictures of the area? Which part of London are you in?

Posted by Jim Bishop (Member # 81) on September 29, 2004, 05:37 AM:

Hi Tom, Chip, Chris, Dan, Tony.

Thanks for all your offers of help & suggestions. Chip, you were right. I removed & replaced the lens into the holder & hey presto, back to normal.

Cheers Everyone.

If you want another serious challenge to work on; the part of the casing that the rear leg unit of the projector is attached to was damaged in transit a few years ago. Just one side of it was somehow flattened back into the rest of the casing, so it now stands like the Leaning Tower of Pisa. I use a prop underneath to level it out, but have been wondering how to permanently fix the problem.

Anyway, thanks again for your concern.
All the best
Jim

Posted by Chip Gelmini (Member # 44) on September 29, 2004, 03:46 PM:

You described it right as the Tower of Pisa. That made me laugh, but Grrrrrrrrrrrr it is a problem I have seen before. My question is why couldn't they have put an adjustable rear foot as they did on the GS1200? You are also correct by using a prop. Mine aren't that bad, can use a quater and a penny, or a quater and a nickel, to do the job. Remember though, mysetup at home is always ready, it's not like the machines are in a closet and have to be pulled out to be used. I just open the booth, set the show and roll it!

Good to know I helped you with the focus. But all the other ideas were interesting as well.

Chip G

Posted by Tony Milman (Member # 7) on September 30, 2004, 12:43 AM:

Is it notpossible to find something of the right size that can be superglued into position and then painted to match the other side? [Confused]

Posted by Kevin Faulkner (Member # 6) on September 30, 2004, 04:24 PM:

This seemed to be a common problem with the ST's. I have owned 3 over the years all have had this leaning problem to some small degree. I'm sure this is why they put the adjustable rear feet on the GS1200.
I think Tony's suggestion is a good one. What I have done in the past is to loosen the screws which hold the rear crossbar which the rubber feet are attached to and jacked up the side with washers under the bar and screw to compensate for the lean.
Hope that suggestion also helps.

Kev.

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