Title: How to Read EEPROM Data from Blaupunkt Bremen SQR 46- Need .bin & Pin Details

Hi,

my name is Marcus and I want to read out an EEPROM from an old Blaupunkt Bremen SQR46.
Inside of the radio looks like this.
I can’t find details about the EEPROM (seems to be within the 40pin W810 with the three black dots)
Can somebody help me with details on how to get the .bin? which HW, which pins etc.?



Best regards,
German language also possible.
Marcus

Dodano po 1 [godziny] 11 [minuty]:

The littler 8pin is a voltage regulator not the EEPROM:
The service manual shows this:

Reading this memory is quite mean, but if you just want to turn on the radio, it was a method without a code - applying + 5V voltage through the diode to the metalized point on the ceramic hybrid (W810). Although some Bremen (possibly from later production?) Were resistant to this solution. In this way, other radios with such a design solution were made, eg Gamma from Audi.

it used to be done with a "slipper"

slevy70 wrote:

it used to be done with a "slipper"

I dare to doubt. But if you develop the topic and present a credible solution, I will gladly change my mind.

I have included some archival descriptions that may be helpful.