[Elecraft] K2 MH2 PTT not working on SSB

[Matt Maguire]

After some years, I decided to try using my Elecraft K2 in SSB mode.
When I key the MH2 mic, the radio stays in receive mode. If I use VOX
the radio transmits ok.

I checked with my multimeter -- when I press the PTT on the MH2, pins
2 (PTT) & 8 (GND) go short circuit. However, pins 2 & 7 (GND) remain
open circuit. Is this normal? I'm wondering if there may be a broken
wire in the cable, or if maybe I need to recheck the mic config
jumpers insiude the K2...

73, Matt VK2RQ