Originally posted by Ed Gordon
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Bell & howell 1695 volume problem
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Originally posted by Maurice Leakey View PostRefer 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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Originally posted by Maurice Leakey View PostChip's suggestion may cause problems with the transistorised amplifier's output circuit as it has no load connected.
Fixing the problem by replacing the defective potentiometer remains the best solution in the long run. As Jason pointed out, "I will probably sell this one so would like to try to fix it.seems to be working perfect other than this.".
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Thanks for the suggestions everyone, i’m pretty limited with electronics though.The volume still works ok as in it goes up and down with the dial, it just does not mute it at the 0 setting.i’m hoping it is maybe just an adjustment,if i get time i will have a look today. I may keep this one now as the worm does have fine cracks it could fail at any time.
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I am not entirely sure of my following comment, but I have an idea that I have heard that some volume pots do not return to zero ohms.
So, in this case, there is nothing wrong with the volume control which I assume is as it should be for the projecting of sound films. I have hundreds of 16mm sound films but do not have any double perf silent so I have never discovered that any of my Bell & Howell models do have this problem.
Of course, the earlier valve models such as the 642 did have an off position on their volume control, this turned off the HT to their amp.
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I highly recommend not ignoring this problem, and having someone competent replace the capacitors for you. problems like this tend to get worse with time, and there is a real chance that when the part fails, something else gets taken out too. or even worse, if the old capacitors start to leak electrolyte on the boards the circuit boards and other components may get ruined.
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