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Author
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Topic: GS1200 Solenoid oscillation
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Paul Adsett
Film God
Posts: 5003
From: USA
Registered: Jun 2003
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posted February 18, 2019 11:49 AM
The front solenoid, which lifts the rubber roller off the flywheel in play mode, is giving me a problem. If I switch to forward play there is no problem, it lifts up normally and stays there, but as soon as I switch the lamp on the solenoid goes into oscillation, rattling the roller arm up and down and making a thumping noise. Any help appreciated.
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The best of all worlds- 8mm, super 8mm, 9.5mm, and HD Digital Projection,
Elmo GS1200 f1.0 2-blade
Eumig S938 Stereo f1.0 Ektar
Panasonic PT-AE4000U digital pj
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Phil Murat
Jedi Master Film Handler
Posts: 671
From: Villeneuve St Georges, France
Registered: Dec 2015
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posted February 19, 2019 09:11 AM
Hi Paul,
Here is what I suggest you :
- Measure Voltage incomming energised solenoid when GS1200 setted in playing mode (With and without Lamp On) .
Does Voltage fluctuate (prefer an analogic tool to a digital tool for this specific case) ?
- If yes, Disconnect Solenoid and power it seperately with a 6V or 12 battery and observe Solenoid operation.
If intermittent fault has disappeared , check solenoid power source for a faulty connector, relay , switch, capacitor as well.....
Check also if there is a diode installed in // , closed to Solenoid.....(If yes , this is a small protect called "free wheel")
Check if Solenoid is abnormaly Hot during operation.
Hope it helps you
Let us know
Phil
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