8mm Forum: problem with my Gs1200 pt 2

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Topic: problem with my Gs1200 pt 2

Antoine Orsero
Master Film Handler

Posts: 374
From: marseille france
Registered: Jun 2003

posted January 20, 2006 07:56 AM

I found the problem!La welding of R355 was defective! Thank you with all for your answers! [Smile]

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Tony

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted January 20, 2006 10:42 AM

Hi Antoine,

Strange, I cant see R355 in the manual. Where does it reside in the machine? Im interested to see why it should cause this strange problem.

Kev.

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GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.

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Antoine Orsero
Master Film Handler

Posts: 374
From: marseille france
Registered: Jun 2003

posted January 20, 2006 11:22 AM

Hi Kevin,

No R355 but R335! Excuse me for my mistake!

Just on the left of relay RY301!

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Tony

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted January 20, 2006 04:29 PM

Thats all very strange. R335 is shown on the circuit as a 1.2 ohm 2Watt resistor. It supplies the voltage to the exciter lamp. Its in circuit to supply a lower voltage to the exciter lamp untill the relays kick in and short it out to bring the exciter lamp up to full brightness.
There is no possible way that this is going to effect the operation of the main lamp only the exciter lamp as the circuits are not connected in any way.

Antoine, I suspect that in repairing this bad joint you may have actually disturbed another joint possibly on one of the relays. I would check for other bad joints.

Hope this helps, Kev.

PS. While we are on this subject I have given Brad a copy of the whole GS1200 service manual in PDF form which he will put on the forum here under the manuals section for those who want a copy.

--------------------
GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.

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Antoine Orsero
Master Film Handler

Posts: 374
From: marseille france
Registered: Jun 2003

posted January 20, 2006 05:33 PM

Kevin,
I do not know but the projector works well now! I have a bad copy of the handbook of repair of the GS1200 and there are identifications which I cannot read on the electric diagram!

Thank you and good night!
[Roll Eyes]

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Tony

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted January 20, 2006 06:38 PM

Lets hope it stays that way for you now. Maybe that problem you found was putting some strain on some the power supply. Fingers crossed all is sorted.

Kev.

--------------------
GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.

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