1st and 2 nd selections work fine entering on keboard -Seeburg LS325 but get reselect and submit error light on 3rd

Hi...I am repairing a Seeburg LS325 model and I have an odd issue, when enter my first and 2nd record selections every thing works as it should including the reselect light if the 1st digit isn't a 1 or a 2, but on the 3rd record selection the reselect light comes on for the 3rd number if its a 2,3, or 4, example...the machine will accept 111, 121,125 but gives an error on 112-4,1124. also gives an error select light for 212-4, 222-224. Any ideas where I should look to solve this issue?
Thanks Ken

Hi Ken,
Do you have a LS-3 25, or LS-3 10 , or just a LS-3 ? If just an LS-3, change it to a-10, or -25, then add ONE credit, and try those non-working numbers, one at a time. Let me know what happens. Be sure the ground strap on the TES, has been moved, "out" from under the small PCB ! Also, check the album switch related on that PCB, if so equipped. Ron Rich