I have a Becker 754 AM/FM Cassette that has the 4 slashes on the LCD display when powered up. I realize that the unit is in a locked up state, but according to Becker the radio needs to be returned to them for repair. Does anyone now what is involved in doing the repair yourself since Becker wants $120 to complete what is probably simple if you know how.

 

radio needs to be reset it looks like you input the wrong code to many times, if you don't think that i the case leave the radio on for a couple of hours to see if it will let you enter the code again
good luck