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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » shocking platter (Page 2)

 
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Author Topic: shocking platter
Darryl Spicer
Film God

Posts: 3250
From: Lexington, KY, USA
Registered: Dec 2000


 - posted 09-29-2003 06:21 PM      Profile for Darryl Spicer     Send New Private Message       Edit/Delete Post 
Could it possably be a bad ground in the plug its self. Are there capacitors in this unit that could be causing problems. When you turn the platter off I am assuming you are using a breaker. I don't claim to be an expert in electricity but I would think that if it is holding 80v with the power off there is an issue with either a capacitor or ground for draining off the voltage. These are just some thoughts.

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Philip Wittlief
Film Handler

Posts: 57
From: Chicago, IL
Registered: May 2003


 - posted 09-29-2003 06:32 PM      Profile for Philip Wittlief   Author's Homepage   Email Philip Wittlief   Send New Private Message       Edit/Delete Post 
Darryl is right, its a bad ground in the plug or cord itself. I just opened it up and the first thing I checked was if the ground connection was loose. When I got an open between the ground terminal in the platter and on the plug, I disconnected the ground wire from the terminal and it was still open. I also at that time measured from the terminal to the platters and it was near 0 ohms. So it turned out to be nothing but a shorted ground lead in the cord/plug. Although I don't see any physical wear in the cord, so I assume its actually on the plug end. I already replaced the plug and everything seems to be fine. I'll double check while the next show is running, but I'm sure that the problem's been fixed.

Thanks for everyone's help and input.

phil

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Jack Ondracek
Film God

Posts: 2348
From: Port Orchard, WA, USA
Registered: Oct 2002


 - posted 09-29-2003 09:17 PM      Profile for Jack Ondracek   Author's Homepage   Email Jack Ondracek   Send New Private Message       Edit/Delete Post 
quote:
Thanks for everyone's help and input.
Everybody send Philip a bill for a hundred bucks! [Big Grin] [Razz]

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 09-29-2003 10:32 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
Some dim wit may have reversed the neutral and ground wires as well
The green bonding ground must go from the chassis of the platter to the ground pin
One other possibility is the ground pin of the plug may not be bonded to the ground of the box
In some locations electrician rely on the screw connection mounting the receptical to the box
In Ontario a wire must run from the ground terminal of the receptical to the bonding ground of the box
If there is any painted devices in the circuit then a bonding wire is required right through

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