CS9 True Bypass mod help

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acobberson
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Post by acobberson »

Hey all!

Recently the flip-flop circuit on my Ibanez CS9 quit flipping and flopping. I tried the obvious things first, thinking maybe it was just stuck in bypass mode but nothing really helped. So rather than hunting down the problem in the flip/flip circuit I figured I would just mod it for true bypass. After looking at the schematic I figured it would be simple enough. Here is what I did.

1. removed Q105 and jumpered Drain to Source.
2. wired in a 3pdt switch, just like I have done 1,000 times. Input jack to switch, switch to circuit input, circuit output to switch, switch to output jack... that's when it hit me... Stereo output.
So then I simply sent circuit output 2 directly to the second output jack. If the signal is bypassing the circuit anyway (in bypass mode) this shouldn't effect anything, right? Then when the signal hits the circuit, both outputs are being sent to their respective output jack.
For now I'm just running it mono, but it ain't working.

Any ideas as to what the problem could be? Should I have left Q105 in the circuit and THEN jumpered Drain to Source?

Here is the schematic.
https://postimg.org/image/nl31qyplh/

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Dirk_Hendrik
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Post by Dirk_Hendrik »

It aint working what? No signal at all or no chorused signal (only dry).

If there's no signal at all there's something wrong with your wiring and/or switch. If there's dry without chorus there's something wrong with the Q105 mod since that FET allows the wet signal to go to the output mixing stage.
Sorry. Plain out of planes.

http://www.dirk-hendrik.com

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