Audio Systems: radio problem, memory buttons, radio problem

Question
my radio and cd player were working great in myn 92 ford explorer and i cleaned the cd player put it back on radio , it was playing good, then we removed a battery cable and since then can't get it to play, it just gets some blinking lines on it, if i push the memory buttons it will just keep changing blinking nubers, i hope you can help me, thank youpbapm

Answer
May have caused a large spark when connecting/disconnecting th e positive battery cable. Usually better to to the negative cable instead. Test all your fuses incase you blew a fuse, then try unhooking the negative cable and leave it off for 5 minutes. Then reconnect it, turn key to accessory position  and see if the radio works right then. If not, remove it and send for repair, or replace it.