This is topic Bella nd Howell running too fast? in forum 16mm Forum at 8mm Forum.


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Posted by Mark L Barton (Member # 1512) on 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
 
Posted by Vidar Olavesen (Member # 3354) on December 06, 2014, 09:52 AM:
 
Is there a 50/60Hz switch? Maybe that would be the problem?
 
Posted by Paul Mason (Member # 4015) on 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.
 
Posted by Janice Glesser (Member # 2758) on December 06, 2014, 02:16 PM:
 
Maybe this service manual will be helpful:
http://www.film-tech.com/warehouse/manuals/BHTQIII.pdf
 
Posted by Mark L Barton (Member # 1512) on December 07, 2014, 04:23 AM:
 
Thank you all. Its a 1695 Bell and Howell.
 
Posted by Maurice Leakey (Member # 916) on December 07, 2014, 05:21 AM:
 
Mark
As Paul said, the speeds on your model are controlled by potentiometers. Use a non-metallic tool for adjustment.
 


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