There's an internal battery that stores data for the 202 which may have gone
south on you. Reset the thing when you turn it on but plan on having to do that
whenever you turn it on until you can get that battery replaced. It is a solder
job.
Tom
Tom Brennan KD5VIJ, CCC-A/SLP
web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html