[BILL]

This is a common problem with the old Transitone car radios , I know of no exact replacement and a NOS one may have the same problem , I has told that this is from something that got on it from the factory some are OK others turn green and fall apart but not completely around , I have a few that I've repaired, sometime you can find the brake and repair it ,heat carefully with a hair dryer to melt the wax, this is most likely not the answer you wanted ,but this is what I've done,BILL