Blaupunkt Cr 42

[joaosom]

Hello friend, I need to unlock a very old radio, it does not have an eprom circuit,
The serial: BP0251N1367380


Thank you all

[Decode Ghost]

Hello friend, I need to unlock a very old radio, it does not have an eprom circuit,
The serial: BP0251N1367380


Thank you all
hi,
part no ?

[joaosom]

899533​ tks

[Mankyro]

899533​ tks
Read post #11
https://www.digital-kaos.co.uk/forums/showthread.php/121722-Blaupunkt-radio-code?highlight=cr42

[joaosom]

No jumpers on the board, nor eprom, it seems that there is no solution.

[andm266]

No jumpers on the board, nor eprom, it seems that there is no solution.

Probably the code matrix consists of double SMD diodes is located on the board in the front panel of the radio.

[audio]

Hi!

This belongs to BP252xxxx... but I think BP251xxxx.. is the same.

On the front panel, you will find 6 double diodes.
You do the soldering according to the picture, and the code will be: 9796.

[joaosom]

Olá!

Isso pertence a BP252xxxx... mas acho que BP251xxxx.. é o mesmo.

No painel frontal, você encontrará 6 diodos duplos.
Você faz a solda conforme a imagem, e o código será: 9796.


Thank you very much, now I'm going to change the soldering of the diodes to unlock it and install it in the car that we are restoring.

[joaosom]

Here is a photo, now I'm going to make the change.