Message
Re: [PolySix] Non-working attenuator
2014-12-23 by tuk88@rocketmail.com
When I say attenuator doesn't work, that means that turning the knob has no effects on sound (no increasing or decreasing sound).
The differents functions driven by P10, P11, P12 and P13 work well (effects and an other one).
I check between the different pins of the connector and change the attenuator position. I've got a binary counting from 0 to 10 (considering 1 when short circuit done by diode, and 0 by open circuit). So I think the panel doesn't have any problem.
I check the presence of D03 on the different chip by directly touching the pin IC. D03 is present where it should be.
I'll try to find an oscilloscope to check the good signal of D03.
Maybe I've got a 4042 or 7408 out of service ? I think I'll try to change them.
What do you think ?
Lucas