Anyone out there know how to troubleshoot a faulty MK IV footswitch system??
I'm well qualified for troubleshooting the [analog] signal networks, but I'm not well-versed with "logic" networks. The amp works fine, switching channels/effects manually, or using the "external switching" ¼" jacks, but in the "footswitch" mode, the unit's "frozen" in the lead channel. All the leads [& the XLR] on the footswitch cable are fine, and the 5 V. regulator is working fine. It seems impossible to directly contact Mesa for assistance these days, and I'm in the dark as to where to go from here........HELP!!
I'm well qualified for troubleshooting the [analog] signal networks, but I'm not well-versed with "logic" networks. The amp works fine, switching channels/effects manually, or using the "external switching" ¼" jacks, but in the "footswitch" mode, the unit's "frozen" in the lead channel. All the leads [& the XLR] on the footswitch cable are fine, and the 5 V. regulator is working fine. It seems impossible to directly contact Mesa for assistance these days, and I'm in the dark as to where to go from here........HELP!!
