Recent content by desertrout

Nice! Congrats!

It would seem one of the sticks is bad, and the error codes suggests it was moved from slot 3 to slot 4. However, I would just ensure the SIMM leads and the sockets themselves are very clean (if you have contact cleaner, it may help) using some *lightly* abrasive cleaning. And see if the error...

Here's the configuration you're aiming for (from page 6 of the document referenced above):

Excellent- thank you! So, I *believe* you need install the RAM in slots 3 & 4 (in the photo they're in slots 1 & 3). Then you need to move the jumper to the 2/4M side (in the photo it appears to be on the 1M side). If that doesn't work, try the RAM in slots 1 & 2, but from what I understand the...

What to do depends on what version of logic board you have and the RAM size. Is it possible to post a good quality picture of the logic board, as well as the RAM sticks you're using?

Ah - fantastic! Congratulations, and enjoy!

This is what I used - I can't guarantee your internals are identical: Cap # uF V height diam C302 1000 16 20 10 C303 47 25 11 5 C1 47 400 32 17 C4 22 50 11 5

*golf claps*

I have a NEC MultiSync LCD1525x that is 1024x768 optimal. It also supports (and nicely renders) 640x480 and 800x600...

I recently acquired a M7649 Studio Display that works well, but the upper backlight seems dim, and the power light is blinking a repeating 'short short long' pattern... which seems to be an error code for a failed backlight. Has anyone repaired one of these before? Is this a caps issue, or does...

This is exactly why I thought to suggest it. And it's pretty common. It's nice when it's something simple. Great looking machine! Display looks great.

Double check the power connector on the logic board, ensuring it doesn't have any broken joints?

Also, a screen session may not have been properly closed. I have had to open the activity monitor and close screen that way.

Just thinking about this, that jumper block would be easy enough to replicate by either wiring the connections directly in the jumper's socket, or using another 16 dip socket as a platform and wiring that. The schematic I shared above shows how it's wired:

Ah, that makes sense. This may be helpful: https://archive.org/details/super_serial_card_050-0045-a_schematic/page/n1/mode/1up