Picked up another b&h 1695 in excellent hardly used condition, it does have a couple of cracks to the worm gear but works fine except there is a problem with the volume. The volume works but when the volume wheel is set on zero it is still quite loud.This is a problem when playing silent films as you get the noise from the sprocket holes on the other side of the film. Is there an adjustment so that it is silent when set on zero ?.
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Bell & howell 1695 volume problem
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Have you tried spraying the pot with contact cleaner? Something like Servisol Super 10 https://www.amazon.co.uk/dp/B000KEB6...PSYFA5AR3S5BQY
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Originally posted by David Strelitz View PostHave you tried spraying the pot with contact cleaner? Something like Servisol Super 10 https://www.amazon.co.uk/dp/B000KEB6...PSYFA5AR3S5BQY
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Do you have an electrical schematic for this machine? It would help with troubleshooting.
i would think there must be an on/off switch for the sound somewhere. Do you have an identical machine already? If so, and it is working that could help figure out what is wrong with this one. Usually turning the volume pot down shunts the signal to ground. If it’s not doing this, the pot itself may be damaged somehow.
Perhaps there is a physical stop on the knob itself, and loosening any set screws on the knob might allow you to adjust its position on the shaft. You might simply try removing the knob and seeing if the shaft can turn farther and turn the sound off.
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Jason, Your potentiometer appears to be defective and should be replaced. That part is not expensive, and if you can access it easily there are only two wires that have to be connected to a new potentiometer. You will need to find a new one that will fit were the old one is, and you will need to determine the correct ohm rating. If you need to do major disassembly to even get to the potentiometer you may have to find someone qualified to work on the projector.
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Refer to figure 26 to show the volume and tone controls on the 1695.
Volume control is a 50k.
BHTQIII.pdf (film-tech.com)
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