Well, i tried :
- reset the PMU( holding back power for at least 30sec),
- booting without the battery,
- opening and booting with HD disconnected,
- booting with the memory expansion card removed (it was well seated when i opened the thing) ,
all this no joy. Still these 4 tones "Dah dee Da da"...
In the service manual (thanks Elfen) , at the symptom charts , it says :
"Hardware failure occurs (four-tone error chord sequence sounds after startup chord) :
1 Disconnect hard drive data cable and reboot system. If startup sequence is normal, reseat cable and retest.
[SIZE=10pt]2 [/SIZE]Replace hard drive.
3 If the system is connected to an external floppy drive, disconnect drive and reboot system. If startup sequence is normal, reseat cable and retest. "
Given i've tried booting without HD, and it was still Dahdeedada-ing, i think there is indeed a problem with the board :-/
when i have time i'll try swapping the HD with a good working one ( i have only one…), we'll see. Can't try with a floppy, no adapter nor extern floppy drive.
Here a pict of the inside :

@ Bibilit, Thanks Mate, don't know if i can remove individual keys and change places on these keyboards… Will check, but i don't want to break anything
indeed german keyboards are strange , no "@", how do they type mail addresses
And the ¨ are only for Ü Ö and Ä … Can't type my name correctly
But i like the light grey color.
[SIZE=10pt] [/SIZE]
- reset the PMU( holding back power for at least 30sec),
- booting without the battery,
- opening and booting with HD disconnected,
- booting with the memory expansion card removed (it was well seated when i opened the thing) ,
all this no joy. Still these 4 tones "Dah dee Da da"...
In the service manual (thanks Elfen) , at the symptom charts , it says :
"Hardware failure occurs (four-tone error chord sequence sounds after startup chord) :
1 Disconnect hard drive data cable and reboot system. If startup sequence is normal, reseat cable and retest.
[SIZE=10pt]2 [/SIZE]Replace hard drive.
3 If the system is connected to an external floppy drive, disconnect drive and reboot system. If startup sequence is normal, reseat cable and retest. "
Given i've tried booting without HD, and it was still Dahdeedada-ing, i think there is indeed a problem with the board :-/
when i have time i'll try swapping the HD with a good working one ( i have only one…), we'll see. Can't try with a floppy, no adapter nor extern floppy drive.
Here a pict of the inside :

@ Bibilit, Thanks Mate, don't know if i can remove individual keys and change places on these keyboards… Will check, but i don't want to break anything
indeed german keyboards are strange , no "@", how do they type mail addresses
And the ¨ are only for Ü Ö and Ä … Can't type my name correctly
But i like the light grey color.
[SIZE=10pt] [/SIZE]