Broken SE MB Modifications

[Dannyshing27]

Hi All,

I recently took my Macintosh SE FDHD down from the loft to play around with and it decided not to function. On inspecting the logic board I noticed a few modifications that looked out of place , anyone have any idea what they are?







Also I have sad Mac 0000000E/ 0000FFFF if anyone knows what that means? 

 

[bibilit]

The jumper is there to switch from 1Mb to 4Mb. 

IIRC the second generation of boards had this, probably upgraded at some point. 

The early ones had a resistor to cut. 

Don’t see anything else weird. 

 

[dochilli]

The error code E means: failed data bus test. Bad SIMM or data bus error.

I would clean and reseat the SIMM. If you have, use some known good SIMM.

https://udcf.gla.ac.uk/~gwm1h/Error_Codes/Sad_Mac_Codes.html

 

[Dannyshing27]

The error code E means: failed data bus test. Bad SIMM or data bus error.

I would clean and reseat the SIMM. If you have, use some known good SIMM.

https://udcf.gla.ac.uk/~gwm1h/Error_Codes/Sad_Mac_Codes.html

Thanks!

Turns out the ram slot wasn't holding a SIMM correctly, so I had to do some bodging with cable ties 

 

[superjer2000]

Cut out that battery!!!

 

[Dannyshing27]

Cut out that battery!!!

Already done