I may have found the culprit... When the dial face lamp connectors shorted, it took out D912. D910 (1S1555) is in series with it so I desoldered and tested it...it measured a couple ohms both ways so it's definitely toast.
Unfortunately I don't have an exact substitute on-hand but I found some 1N4154's in my stash. Would it work in this application?
Looking at the two datasheets the specifications appear similar:
1S1555 datasheet
1N4154 datasheet