Seeburg SMC 2 selection problem

[playpin-35]

I have a seeburg smc2 that has a selection problem. The problem is on coin and select freeplay, the buttons pushed do not register the correct numbers. Sometimes it will scan and pick up a record( not the correct one) and sometimes it won't pick up a record. If you put it on continuous free play it will trip at each record, play both sides and then move to the next with no trouble. Any ideas what the problem could be or troubleshooting tips to try?

[Ron Rich]

Does the "selection being made" display agree with the buttons pushed ? Ron Rich

[playpin-35]

No. Say for instance you push 255, the display reads like 022, or 211. It does this both on coin and select free play. In service mode, you push 99 or 00 for free play modes and it registers fine.

[Ron Rich]

You have an internal problem in the MCU--If you wish to troubleshoot it, I would advise that you purchase a copy of (the late) Tony Millers "Red Box and MCU" book.
If you wish to hire me to repair it--Please contact me off list at ronnnrich@yahoo.com Ron Rich