Thank you for this advice! In fact, this was exactly the problem.
The MAX1044 showed +9v from pin 3 to pin 1 or 8, but +0.66v from pin 3 to pin 5.
This suggests to me that the charge pump was destroyed by a voltage spike from the shared power adapter. I found indication on other discussion boards that this part number can be quite sensitive:
http://www.diystompboxes.com/smfforum/i ... ic=97418.0e.g.,
>The MAX1044 is *almost* an incredibly good part, with one big problem in today's pedal market.
>Your problem is almost certainly the fact that the 1044 has an absolute maximum input voltage of
>10.000000V Above that, they die.
Anyway, I replaced the MAX1044 and my pedal works fine!
Thanks again,
jhno