Batboard

I have a 200mhz CDM1550LS+ in my vehicle that all of a sudden today began showing SYNTH UNLOCK on the display and making a low error tone when I try to transmit. I can transmit fine, but when I unkey the mic, it goes into the error. Changing the channels or cycling the power fixes the problem until I try to transmit again. The radio has been working fine in my vehicle for the last year, and I haven't had this problem before.

Anyone ever seen this?

Try to reloade radio program if this don`t work try firmware, this problem is cause by rapid current drain during start-up or jump start other vehicle... protect your ingnition circuit with a diode or a fuse..