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Anyone else had any issues with their tach not liking the cold?

Every frosty morning we've had my tach hasn't worked till the cabin temp comes up a bit. Took about 5 minutes to come to life this morning!

Any ideas what it might be? I mean its not the end of the world, just a bit annoying.

FDs have legendarily weak printed tracks on the clocksets, it's more unusual to find one where everything works than one with random mutant faults. Dunno if FBs are the same? I mean, I know they're a multiplug unit with printed circuits but dunno if they break down like the FD ones. You can sometimes see which track is corroded and re-solder them. Other thing that occurs is where does the tacho output come from? If it's a worm-drive to the gearbox then maybe there's water getting in the union and freezing? My old Z400-4 used to do that. Amongst other things :x

I know the tach is triggered from the coil, and that I'll have to rewire it when I fit my Megasquirt. When I've got it all out then I'll check the continuity of the tracks, cheers for the heads up

It does almost seem like something is freezing. I wonder if there might be condensation in the actual dial mechanism. None to see inside the clocks enclosure though.

Hi Steve
Did you ever work out what this was?
I seem to have the same issue. Not until it has warmed up does the tacho jump into life.