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» 8mm Forum   » 8mm Forum   » Keystone 109D - Master Switch problem

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Author Topic: Keystone 109D - Master Switch problem
Chris Smart
Junior
Posts: 7
From: Toronto, Canada
Registered: Jul 2019


 - posted July 10, 2019 12:52 PM      Profile for Chris Smart   Email Chris Smart   Send New Private Message       Edit/Delete Post 
Hello!

It seems my projector has an issue with the master switch. I need to wiggle the switch a little closer to 'Lamp' from 'Motor' to get the motor to start. I suspect the contact is worn or misaligned. Has anyone else had this issue with the master switch and is there a way to fix it?

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csmart

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Steve Klare
Film Guy

Posts: 6849
From: Long Island, NY, USA
Registered: Jun 2003


 - posted July 10, 2019 03:39 PM      Profile for Steve Klare   Email Steve Klare   Send New Private Message       Edit/Delete Post 
Hi Chris,

I don't know these machines very well, but among the ones I do know, the "switch" isn't a switch, but a system of switches. The knob twists a camshaft, and the lobes on the cam depress switches to turn lamps and motors on and off, forward and reverse.

Can you access whatever is behind that knob and take a look?

In an ideal Universe your knob would be on there wrong (or the wrong knob) and the fix could be simple.

(In my experience the Universe can stand some improvement...)

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All I ask is a wide screen and a projector to light her by...

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Chris Smart
Junior
Posts: 7
From: Toronto, Canada
Registered: Jul 2019


 - posted July 11, 2019 06:02 PM      Profile for Chris Smart   Email Chris Smart   Send New Private Message       Edit/Delete Post 
Thanks for the reply Steve!

I can only get a glimpse behind the switch when i open up he splicer drawer found below it. Looks like I will have to remove the projector from the base and then remove the bottom plate (if possible) to gain full access to the back of the switch. The switch seems to be getting worse. It struggles at low speed but now I have to really play with the position to get it to start at all. And when i move to the lamp theres a delay like the motor switches off and then on again.

I'll open it up and take some pictures of the connections when I get a chance. Hope I can fix it!

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csmart

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