Mac Color Classic repair

[Timo W.]

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]

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]

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]

What is for the two pin male connector labeled "1" on the analog board? It is not connected to anything.

 

[inakito]

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]

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.