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Strand ACT 6+ Circuit Diagram


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I am trying to repair a Strand Act 6+ dimmer for a local theatre.


I have already repaired faults with two of the channels. However channel 6 stays stuck on full with no control voltage applied. This is NOT a faulty triac as I have tested this.


It is definitely control circuit related as there is a slight delay upon power up as the power supply capacitors charge.


The fault seems very similar to Zero 88 Beta Pack MK1s I have seen where the 100K resistors go high value, but there pairs of channels are affected at once.


In the act 6 + much of the components are surface mount, so it is quite hard to see what is going on.


If anyone has a circuit diagram/service manual available or any idea of the problem, this would be much appreciated!


Many thanks,


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