I just pulled out an old Tag Heuer chrono from that hasn't been worn in 10 years. The watch is similar to this one and runs an Eta Cal 251.251
I replaced the battery today and the watch works fine except for the 1/100th second hand (the black hand in the picture) which doesn't move from the 12 oclock position, it just beats back and forth every second. Other than that the chrono function works properly - the minute and the hour hand advances as expected, just that the 1/100th second is stuck at 12 o'clock.
Even though I replaced the battery with a new one today, could this be a battery problem? If not, anyone know what the problem could be and if there's an easy fix? Or does the watch need to go in for repairs?