Hi Matt,thanks for the info. My power adapters are 1A or higher at 9VDC and the proper polarity and tip size. The battery acid issue seems to be the culprit in every one of the CZ101s I came across. The CZ3000 do not have that issue since they are AC powered units and the battery compartment is removable and replacable. I wish more CZ units were made that way. The CZ2000s(speakered version of CZ3000),uses an internal CMOS battery and that too can be an issue after 15 years! Soo... yeah.