Author Topic: Q-switch clicking (Read 169 times)

count · « **on:** January 19, 2014, 04:53:28 AM »

After the major overhaul on La G?era (Blondie, 73-44) I am left with a clicking sound when operating the Q-switches. They were changed out in favour of the newer style toggles, as the old ones are out of production/stock.
http://club.alembic.com/Images/394/12370.html
The old ones didn't have the caps between the terminals.
But it appears that the new ones do??

The link above explains where to put the caps on the 7101 toggles, where as the one's on series electronics have 7201 toggles.
Where do I solder on the resistors...?

count · « **Reply #1 on:** January 22, 2014, 12:26:31 PM »

Mica? Anyone.?

mica · « **Reply #2 on:** January 22, 2014, 10:30:39 PM »

7201? You don't have 7203 switches?

If you've really got 7203 switches, then is the sound the same in both channels? Does the Q boost work and the only problem is the click?

count · « **Reply #3 on:** January 23, 2014, 12:31:52 AM »

Sorry, 7203 it is.. It has six connection points as opposed to the three that the guide is referring to. (PF-5)
Yes, they work like a charm, apart from the clicking/clipping or what you would call it when operating.

count · « **Reply #4 on:** January 28, 2014, 11:26:37 PM »

I'm thinking the PF-6 circuit has these resistors already in the loop. And since the toggles I got were for the PF-6 I need to add the resistors. (?)
A quick fix, when I know where to add them, and which value the resistors should have.

mica · « **Reply #5 on:** January 29, 2014, 03:45:25 PM »

It's not a quick fix at all. PF-5 and PF-6 are different enough that you can't just add the resistors. I am working on this for you - but the solution isn't yet ready, sorry.

mica · « **Reply #6 on:** January 31, 2014, 11:15:30 AM »

OK, dad worked this out, please let me know if these instructions need any clarification:

Ans also let me know the result when you have completed it!

count · « **Reply #7 on:** February 03, 2014, 01:19:07 PM »

Clear as crystal!
I'll order up the parts, and let you know how it goes.
Again, thanks alot for the going the extra mile. The Alembic customer service is simply in it's own league..!
I'll keep you posted.

count · « **Reply #8 on:** March 04, 2014, 12:25:08 PM »

This worked like a charm Mica, say thanks to your dad again for me!