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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Kinoton FP30 dowser buzzing

   
Author Topic: Kinoton FP30 dowser buzzing
Sally Ann Burgess
Expert Film Handler

Posts: 120
From: Queenstown, New Zealand
Registered: Apr 2008


 - posted 06-07-2011 12:55 AM      Profile for Sally Ann Burgess   Email Sally Ann Burgess   Send New Private Message       Edit/Delete Post 
Whilst cleaning the projector this morning I heard a buzzing sound, so I removed the shutter housing and it was coming from the dowser. In the open position, it doesn't buzz but it does when it's closed. I called a sparky in and he said it was most likely that one of the coils was going to burn itself out. There was 24v going to the unit so all was well there.
Has anyone else had this problem?

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Gordon Bachlund
Jedi Master Film Handler

Posts: 696
From: Monrovia, CA, USA
Registered: Aug 1999


 - posted 06-08-2011 03:11 PM      Profile for Gordon Bachlund   Author's Homepage   Email Gordon Bachlund   Send New Private Message       Edit/Delete Post 
Sally, if the douser is of the rotary solenoid type with only two leads, and if the coil is not overheating, you should not be overly concerned.

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Sally Ann Burgess
Expert Film Handler

Posts: 120
From: Queenstown, New Zealand
Registered: Apr 2008


 - posted 06-12-2011 03:56 AM      Profile for Sally Ann Burgess   Email Sally Ann Burgess   Send New Private Message       Edit/Delete Post 
Thanks Gordon, I cleaned everything with isopropyl alcohol a couple of days ago and it hasn't buzzed since.

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Bruce Hansen
Jedi Master Film Handler

Posts: 847
From: Stone Mountain, GA, USA
Registered: Dec 1999


 - posted 06-12-2011 04:59 PM      Profile for Bruce Hansen   Email Bruce Hansen   Send New Private Message       Edit/Delete Post 
Check to make sure that all the screws are tight. Sometimes things that have coils with AC applied to them just buzz.

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