awats Posted October 26, 2021 Share Posted October 26, 2021 Hello, I'm looking for the schematics for on older floorboard WITHOUT the wah switch under the pedal. This floorboard has SELECT SOUND for the upper left switch, not CHANNEL SELECT. The serial number is F1-005432. I have an AXSys212 with this floorboard. The AXSys rom version is 1.04 if that has any bearing. The floorboard display and LEDs track all settings on the AXSys front pannel. The wah and volume work fine. But pressing the SELECT SOUND is the same as pressing the TAP Tempo Tuner and pressing any Bank switch gives random results. I replaced all switches in the floorboard and checked for any bridges or opens. Two of the old switches certainly were intermittent. They are now all good. The AXSys interprets a Channel Select as a Tuner press among other things. I need to look at the switch voltage ladder and see where it's giving the wrong voltage to the ADC converter in the amp. I have the schematics for the later floorboard with the wah switch but there are a couple of wiring differences in the connects (or the schematics are wrong.) One problem is that the voltage divider on mine is markes as the wah switch which I don't have. I makes checking the switch ladder difficult. I am hoping someone has the schematics for this older floorboard. And Patchwizard is you just happen to have it. Or maybe the AX2 prom binary. :) Thanks for any help! Awats Quote Link to comment Share on other sites More sharing options...
awats Posted November 13, 2021 Author Share Posted November 13, 2021 I figured it out. It's the known U7 failure in the amp. I replaced it and added the protection diodes. Quote Link to comment Share on other sites More sharing options...
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