I installed a new A-113 Subharmonic Generator, which worked normally
 during brief testing. Then I installed (connecting the power cable
 correctly) a Plan B Model 12 filter. On power-up the fuse on the A-
 100G6 blew. I removed Model 12 and replaced the fuse. Now the A-113
 doesn't work correctly: It tracks incoming pitch (without dividing)
 outputting a sawtooth wave; knobs affect volume. However, all leds are
 constantly lit and the buttons don't work - I can't set the divisors or
 call or save presets. Oddly enough the Plan B Model 12 works.
 If I substitute the A-113 with an A-190 (which also requires additional
 + 5V from the Low-Cost Adapter) at the same power slot, it works OK. I
 have PSU2.
 I wonder, if some kind of resetting or other easy fix is possible
 Best regards
 Jari Jokinen