Is it true that the KI-202, KI-203, KI-204, and KI-206 are not repairable if they are below serial number 10000?
No, units with serial numbers below 10000 can be repaired. However, is it rather expensive since the meter replacement kit needed to repair these units has a list price of $1100. We would suggest that you purchase a newly overhauled unit with a serial number above 10000, which we have available for $1095.