portableleo
New member
Hi all,
First post here - I have been trying to restore a Macintosh Portable m5126 (backlit) model and I'm running into some problems when using the MacEffects 8Mb Memory Expansion card (https://maceffects.com/products/8mb-memory-upgrade-for-macintosh-portable-m5120-m5126).
I have 3 memory cards total; the stock 3 MB (4MB?) card, and two MacEffects 8Mb Memory Expansion cards
So with the stock 4mb card, things seem to work just fine. Here's video to show it's working normally: https://youtu.be/3rL3qQXVArk
With one of the MacEffects 8Mb Memory Expansion cards, things work most of the time, except in certain situations, the backlight will flicker uncontrollably when triggered by certain software (so strange). Here's a video of the flickering card: https://youtu.be/1LRcpIBafWs - the flickering seems to occur when the RAM and or the hard drive are being read / written to. When I exit the program in the video, the screen goes back to normal (illuminated) but does flicker every 3 seconds or so. Restarting results in the card working again (until certain programs are loaded).
Then with the other MacEffects 8Mb Memory Expansion card, I can’t boot successfully, with it always producing “bus error” messages. Here's a video of that card: https://youtu.be/z6e9smBmTxY
Both times when using the MacEffects 8Mb Memory Expansion card I have the jumper on limit 7 mb and hooked up with a jumper wire as instructed to the PDS slot.
Has anybody that bought these cards? Is anyone else having problems with them, especially anything similar to what I mentioned above? The strangest part is that the 2 seemingly identical MacEffects 8Mb Memory Expansion cards are producing errors, but distinctly different from each other.
Let me know what you guys think. I took a very close look at the motherboard and it seems ok, and my recapping checks out, though I think someone might have tinkered with this particular unit in the past, so who knows what might be bad on the motherboard. I also tried the above tests using a scsi2sd and the original hard drive but both produce the same results. Initially I thought it was a voltage problem since the MacEffects guy mentioned that these new cards consume a bit more power than the stock card, but now I am not so sure.
Basically, I want to narrow down the issue to the motherboard or the MacEffects 8Mb Memory Expansion cards.
Any advise or ideas are appreciated!
First post here - I have been trying to restore a Macintosh Portable m5126 (backlit) model and I'm running into some problems when using the MacEffects 8Mb Memory Expansion card (https://maceffects.com/products/8mb-memory-upgrade-for-macintosh-portable-m5120-m5126).
I have 3 memory cards total; the stock 3 MB (4MB?) card, and two MacEffects 8Mb Memory Expansion cards
So with the stock 4mb card, things seem to work just fine. Here's video to show it's working normally: https://youtu.be/3rL3qQXVArk
With one of the MacEffects 8Mb Memory Expansion cards, things work most of the time, except in certain situations, the backlight will flicker uncontrollably when triggered by certain software (so strange). Here's a video of the flickering card: https://youtu.be/1LRcpIBafWs - the flickering seems to occur when the RAM and or the hard drive are being read / written to. When I exit the program in the video, the screen goes back to normal (illuminated) but does flicker every 3 seconds or so. Restarting results in the card working again (until certain programs are loaded).
Then with the other MacEffects 8Mb Memory Expansion card, I can’t boot successfully, with it always producing “bus error” messages. Here's a video of that card: https://youtu.be/z6e9smBmTxY
Both times when using the MacEffects 8Mb Memory Expansion card I have the jumper on limit 7 mb and hooked up with a jumper wire as instructed to the PDS slot.
Has anybody that bought these cards? Is anyone else having problems with them, especially anything similar to what I mentioned above? The strangest part is that the 2 seemingly identical MacEffects 8Mb Memory Expansion cards are producing errors, but distinctly different from each other.
Let me know what you guys think. I took a very close look at the motherboard and it seems ok, and my recapping checks out, though I think someone might have tinkered with this particular unit in the past, so who knows what might be bad on the motherboard. I also tried the above tests using a scsi2sd and the original hard drive but both produce the same results. Initially I thought it was a voltage problem since the MacEffects guy mentioned that these new cards consume a bit more power than the stock card, but now I am not so sure.
Basically, I want to narrow down the issue to the motherboard or the MacEffects 8Mb Memory Expansion cards.
Any advise or ideas are appreciated!