Merry Christmas.My Rockola just did a strange thing?

Merry Christmas.This group is an asset to people with jukboxes like me.I have a
question about a computerized Rockola the Supersound 2.I loaded my Christmas
records in it .I was having trouble selecting the 9s.Looks like edge connector
cleaning again.Anyway if you select records it will play them in order all the
1s,all the 2s and on up.After it reached 179 it went all the way around and
played 181 and then went back and played 189 and 199 and I didn't even select
181.Strange,never did that before.Could it have been a glitch or is it a sign
the computer is going to go wacky in the near future?Hopefully not.I'll clean
those edge connectors after Christmas.By the way do these have a battery in
them?It's got to be getting pretty old for a battery if it does.

Thanks

James