Blaupunkt Essen CR31, strange Problem

[kostelectronics]

Hi all.

I have a old Blaupunkt Essen CR31 here with no code. "---"
I readed th 93c14 and checked the code. Counter was on Address: 0x6B with "4A" (more than 3 trys). I wrote C2 instead of "4A" and every time when i switch on the radio, the radio writes "4A" to the counter value. so, still "---". I tryed also a complete different dump, no chance! i let the radio switched on over night, still "---". What is the problem here?

BR Matthias

[otas1]

Procesor K.O.
O.

[kostelectronics]

are you sure? had you already a problem like this with this radio?

[Fradebo]

IF I REMEMBER WELL WE HAD A PROBLEM WITH SIMILAR SETS IN THE PAST. THEY HAD A MODIFICATION.
BEST WAY IS TO GET AROUND THIS AND TO SWITCH OFF THE CODE
IF YOU HAVE THE CODE PUSH BUTTONS 1 AND FM SIMULTANEOUSLY AND SWITCH ON THE SET KEEPING THEM PUSHED. iT IS POSSIBLE THAT YOU CAN OVERRULE THE COUNTER THEN. PUT IN THE CODE AND CONFIRM.
SWITCH OFF THE SET AND THEN SWITCH IT ONAGAIN KEEPING BUTTONS 1 AND 4 PUSHED. PUT IN THE CODE AGAIN AND CONFIRM; THE SET SHOULD BE FREE.
IF THIS DOES NOT WORK YOU HAVE A PROBLEM.
PERHAPS THERE IS A WAY WITH ANOTHER DUMP BET DONT LEAVE THE CODE ACTIVE

GREETZ FRADEBO

PS THE CODE COULD BE ERASED TRY 0000 THEN

[otas1]

are you sure? had you already a problem like this with this radio?
when the memory transfer to A4

O.

[kostelectronics]

i tryed 1+FM pressed together while switching on....no chance! but this radio doesn't have the classic motorola processor, there is a ST (SGS Thomson) chip inside. and the FM-Button is called "3U-T" ...i think it's different than the oter known blaupunkt radios. But anyways, i will get this stupid thing running, only for satisfaction :) do you have other ideas? BR Matthias :)

[alexics]

i tryed 1+FM pressed together while switching on....no chance! but this radio doesn't have the classic motorola processor, there is a ST (SGS Thomson) chip inside. and the FM-Button is called "3U-T" ...i think it's different than the oter known blaupunkt radios. But anyways, i will get this stupid thing running, only for satisfaction :) do you have other ideas? BR Matthias :)

Can you post your dump here.

[knok]

try at address 0x6B with "92" and let me know....
If works , please hit THANKS

K

[kostelectronics]

@knok,

that sounds very very interesting! :)) :devil: but i can try it not until this evening :( i'll give you Feedback! Thanks very much!!! BR Matthias

[Fradebo]

DO YOU HAVE THE 7.64X.XXX.XXX NUMBER ?

[kostelectronics]

Did not work With "92" on 0x6B :( ....i saw now, that i had already a Dump with this "trick", but no Chance!

Check my Attatchement please:
Here you are the good dump before and the same one after switching on the radio. (Code is Original matched to the Serial-Number of the Radio! )

Bosch# is: 7 641 771 010 (BP1771)


Thanks for any help!

BR Matthias

[Fradebo]

THE ESSEN CR31 WAS SIMILAR TO THE VERONA CR31 WICH WAS THE MODEL THAT HAD TO BE MODIFIED AFTER BLOCKING.
IT WAS A MODIFICATION IN THE CIRCUIT SURROUNDING THE EEPROM BUT I DID NOT FOUND THAT DATA UNTIL NOW.
IT IS VERY POSSIBLE THAT YOU HAVE A DEFECTIVE PROCESSOR
I WILL TRY TO FIND AN ORIGINAL EEPROM AND TAKE A DUMP.

GREETZ FRADEBO

[Fradebo]

FOUND AN ORIGINAL EEPROM AND TOOK A DUMP;
WILL UPLOAD IT THIS WEEKEND....


BYE FRADEBO

[murat332]

Did not work With "92" on 0x6B :( ....i saw now, that i had already a Dump with this "trick", but no Chance!

Check my Attatchement please:
Here you are the good dump before and the same one after switching on the radio. (Code is Original matched to the Serial-Number of the Radio! )

Bosch# is: 7 641 771 010 (BP1771)


Thanks for any help!

BR Matthias

hi my friend
*******
BLAUPUNKT ESSEN CR31
( orig. code 1257 )
7 641 771 010
uP : ST6154Q8/CB/5

EEPROM: XLE93C46P (16-bit)
cr31.bin CODE=1234
68h 69h 6Ah
43 21 code 1234
C2 first try
Enter: buttons 1, 2, 3 & 4.
Confirm: ^*** :ciao:
***************
or good dump :)

[Fradebo]

HERE'S MINE

[kostelectronics]

Thanks Murat and Fradebo!

i found the problem. Processor was in a wrong state, i reseted it with a dump from a completely different radio. i found this per fortune :) now working all dumps and radio is fine :) Thanks everyone, solved! You can close this thread.

[szoki]

Whil you send me please a dump tu reset my verona cr31 to...
I'm new on this forum.
thanks.
my mail is

[Fradebo]

THE DUMP IS STILL THERE. SEE FIRST PAGE
PSE READ THE HOUSE RULES AND INTRODUCE YOURSELF FIRST ON THE INTRODUCTION PAGE

GRTZ FRADEBO