• Please review our updated Terms and Rules here

Mac Color Classic repair

Timo W.

Veteran Member
Joined
Nov 25, 2014
Messages
1,557
Location
Germany
That's an LC 550 board then.

Should not make any difference. It may need a battery connected for it to work, however. Try that if you haven't already.
 

inakito

Experienced Member
Joined
Oct 5, 2011
Messages
293
Location
Spain
The board is labeled as 823-0367-c. I have found only one picture on the internet that is identical. By the way, these have a diode between pins 7 and 1 on U8 that i cannot see on other boards, and does not show on schematics. Any idea of which would be its purpose?
 

Towmater

Experienced Member
Joined
May 14, 2017
Messages
208
Adrian's Cellar on YouTube has a video on using an RGB2HDMI on an SE (I think) so perhaps some of this info could be adapted to bypass the analog board.
 

inakito

Experienced Member
Joined
Oct 5, 2011
Messages
293
Location
Spain
What is for the two pin male connector labeled "1" on the analog board? It is not connected to anything.
 

inakito

Experienced Member
Joined
Oct 5, 2011
Messages
293
Location
Spain
I have powered the logic board, separately, 5V with a psu connected to pins on the edge connector. it takes 730mA flat at 5V. Apparently there is activity (checked on some ROM pins) although most components run pretty cold.
Should I expect any real activity just powering the board like this? Does still need the keyboard present to start doing anything?
 

VERAULT

Veteran Member
Joined
Jan 30, 2012
Messages
6,284
Location
Connecticut, USA
The board is labeled as 823-0367-c. I have found only one picture on the internet that is identical. By the way, these have a diode between pins 7 and 1 on U8 that i cannot see on other boards, and does not show on schematics. Any idea of which would be its purpose?
Funny I came across a mac color classic with this diode on u8 as well. Someone installed a pin header for a battery pack on the board.
 
Top