clean all the (gold) contacts of the board, both sides with a clean pencil eraser
same for the ram & vram, remove them, clean contacts, replace them
blow out the slots
Reset the Logic Board
1 Unplug the computer.
2 Remove the battery from the logic board.
3 Disconnect the power supply cable from the logic board and then press the Cuda Reset button.
4 Wait at least 10 minutes before replacing the battery.
5 Make sure the battery is installed in the correct +/- direction.
what is the cuda button? thanks!
The Cuda Chip
The Cuda is a microcontroller chip. Its function is to
•Turn system power on and off
•Manage system resets from various commands
•Maintain parameter RAM (PRAM)
•Manage the Apple Desktop Bus (ADB)
•Manage the real-time clock
use the service guide of the mac to find the cuda chip
resetting procedures may be different for macs
i wonder what CUDA stands for :)
Capacitive Unit Discharge ASIC
As far as I can see ....
is there a floppy in the disk drive with name : Network Access
with a system folder on the floppy
and no HD or not working HD ?
after finding a booatable system, the portable get started up slow, slow from the floppy
im talking about the tunnel vision on the screen… and yes the hard drive is bad :) but my main concern is the screen goes black around the corner and edges after about 20 minutes of use…