Do you have fluorescent lighting on when using it? I’ve found thiscan often account for the silly reading at least, I think it maybe to do withthe frequencies the chokes in the unit give out.
Don’t confuse luck with ability.
Happy Shooting!! Paul.
"We cannot solve our problems with the same thinking that we used when we created them" - Albert Einstein.
Buy a Combro or one those new Polish Chronos.
A.G
I had the same problem with mine until it stopped recording any shots !
Turns out the electrics inside corrode and chances are need completely replacing, it's not a cost effective job for skin, cheaper to replace than strip and replace.