well the tone for 15 sec only resets the unit if locked up and not the program. never heard of the pins 3 and 4 so I am not sure if I would try it the RS232 defaults as far as I know to off but when you remove the EPROM from the battery pack under (if you have one) it will put it back to the factory program and you will need DTMF to program it.
----- Original Message ----- From: wspx472 To: Repeater-Builder@yahoogroups.com Sent: Wednesday, November 04, 2009 11:35 AM Subject: [Repeater-Builder] Need help resetting Zetron 38A I have a 38A and don't know the password. I have tried sending a DTMF digit for 15 seconds, shorting pins 3, 4 on the RS232 jack, and removed the EPROM and re inserted after reading that this worked. Now, it seems brain dead and won't even respond to RS232 input. Does anyone know a foolproof way to reset this back to factory defaults? Thank