8mm Forum: Bella nd Howell running too fast?

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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

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

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

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.

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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

Maybe this service manual will be helpful:
http://www.film-tech.com/warehouse/manuals/BHTQIII.pdf

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Janice

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

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