Re: 1776 Multiplex with charge/discharge trimmers

Posted by MAO on
URL: http://guitar-fx-layouts.238.s1.nabble.com/1776-Multiplex-with-charge-discharge-trimmers-tp29819p30122.html

Still having trouble figuring this one out.

The H11F1 appears to be working properly. When I remove the PT2399 I can measure the resistance change across pins 4 and 6. When closing the speed switch, the resistance goes from 50k to 30k and returns to 50k when releasing the switch. Seems to be working as expected. But when I plug the PT2399 back in, there is no change in sound when using the switch. Can't read the resistance across pins 4 & 6 either when it's plugged in.

From what I can tell, the delay is working fine, just the speed switch is failing.