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Author Topic: Bella nd Howell running too fast?
Mark L Barton
Jedi Master Film Handler

Posts: 621
From: Bristol, South Glos, England
Registered: Mar 2009


 - posted December 06, 2014 08:51 AM      Profile for Mark L Barton   Email Mark L Barton   Send New Private Message       Edit/Delete Post 
Hello all. I have a B&H TQ and its running too fast? around 30fps, with every one talking sounding just too high pitched and mouse like. Is there an adjustment pot inside that could be turned, your advise and pictures highly welcomed. Thank you

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Vidar Olavesen
Film God

Posts: 2232
From: Sarpsborg, Norway
Registered: Nov 2012


 - posted December 06, 2014 09:52 AM      Profile for Vidar Olavesen   Author's Homepage     Send New Private Message       Edit/Delete Post 
Is there a 50/60Hz switch? Maybe that would be the problem?

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Paul Mason
Jedi Master Film Handler

Posts: 540
From: Aldershot, Hampshire, UK
Registered: Nov 2013


 - posted December 06, 2014 12:16 PM      Profile for Paul Mason     Send New Private Message       Edit/Delete Post 
Mark,
Which model is it? If it's a TQ2 or TQ3 (1644 to 1698 series) the speed is set by a tachometer input to the dc motor electronic speed controller. There is a speed setting preset pot on the speed controller board. It sounds as though the motor is running uncontrolled flat out. The 652 to 658 TQ models have ac induction motors and should not run fast.

--------------------
Paul.

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted December 06, 2014 02:16 PM      Profile for Janice Glesser     Send New Private Message       Edit/Delete Post 
Maybe this service manual will be helpful:
http://www.film-tech.com/warehouse/manuals/BHTQIII.pdf

--------------------
Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Mark L Barton
Jedi Master Film Handler

Posts: 621
From: Bristol, South Glos, England
Registered: Mar 2009


 - posted December 07, 2014 04:23 AM      Profile for Mark L Barton   Email Mark L Barton   Send New Private Message       Edit/Delete Post 
Thank you all. Its a 1695 Bell and Howell.

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Maurice Leakey
Film God

Posts: 5895
From: Bristol. United Kingdom
Registered: Oct 2007


 - posted December 07, 2014 05:21 AM      Profile for Maurice Leakey   Email Maurice Leakey   Send New Private Message       Edit/Delete Post 
Mark
As Paul said, the speeds on your model are controlled by potentiometers. Use a non-metallic tool for adjustment.

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Maurice

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