after some time I pulled out my OWL pedal (rev4) and I was having a blast trying to get my first non-experimental patch done (a rotary speaker).
After nearly one week playing with it, I left the pedal perfectly working one night, but unfortunately the following day the button led shown no signs of life, and the pedal was no longer recognized.
No stressful events whatsoever, powered only by USB cord from PC until then.
Being not possible to enter programming mode by pushing the button, I found information on how to force DFU mode with two wires.
Tried that, and to my surprise, since it was apparently totally bricked, it flashed the firmware. But after cycling power, the device again shows no signs of life.
Tried the procedure repeatedly, with all the firmware versions I could find, tried powering by PSU after removing the red jumper inside, tried separating the digital board and testing it alone (required two more jumper wires).
But always to the same result: the pedal is visible and flashable in forced DFU mode, but otherwise is completely dead and non responsive.
I was wondering if someone could give advice, if there is something else that I could check, i.e. voltages on regulators outputs, etc.
Because if forced DFU works, then the CPU/flash should be (mostly?) ok, right?