Hi! I got a big problem for my 1991 MB 190E factory radio.

This afternoon, i forget to disconnect the battery before remove the radio. Now, put everything back. The radio can not turn on. It has a "beep, beep, beep sound with the flasher light on the turning knob (on/off switch). It doesn't show the "CODE" on the screen. Even i started the car, the radio still "beep, beep, beep... sounds with flasher light.

Then, I disconnect the battery and reconnect it. The radio is no sound, no turn on.... Nothing show!!!

What wrong is it?

My car doesn't have alarm system.

Everyone has this happened before.

The radio is made by Alpine (factory radio)