HP 67 Power Supply (not oscillating)

[mbielman]

Couldn't wait. Replaced the R and it's working now.

Tony (et al) - I'm curious... what is the minimal amount of ROMs needed to get any sort of display?
With only ROM0 I get nothing. Maybe add ROM1? and ROM2? I removed ROM3 once and it sort of works. (so it had ROMs 0, 1, 2 & 4)

Mark