Hello all, I have an 8 plate Steenbeck in my home studio which has 2 screens. Overall it works ok but it's got one big problem: the left hand polygon lens does not want to turn at all. The right polygon lens works fine. I would like to get the left one to work so that I can run a picture film through it with sound.
Something details I've noticed: 1) as expected, when the machine is powered up the right polygon spins forward and backward by toggling the clutch/brake switch next to the speed control lever. I've noticed that when the clutch/brake switch is ON, I can't move the right polygon at all...it is seized up - as it should be. However, when it is in OFF, I can move the polygon by using my finger - ie it spins freely. 2) The left polygon seems to be stuck all the time whether its switch is in ON or OFF. When I toggle the clutch/brake switch for it I can hear the clicking sound of a relay and something does appear to move slightly on the motor shaft for that polygon (I've looked at it by taking off the panels and looking underneath). 4) So I'm guessing that it's either a mechanical issue that has seized up the gears, or it's an electrical issue preventing the gear shaft from releasing for that left side polygon. I've checked my relays and fuses and they appear to be ok - I tested some with a multimeter, and for others I swapped around similar relays and everything is still the same. The belt for the polygon shaft looks like it is on properly and in 'ok' shape, if a bit oily and dirty. Does anyone have any advice or any idea what the problem could be? Any help/advice would be welcome. Sincerely, JP Marchant
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