• Hello MLAers! We've re-enabled auto-approval for accounts. If you are still waiting on account approval, please check this thread for more information.

Search results

  1. B

    IIfx Running at 16MHz?

    Hi ObeyDaleks - thank you for the suggestion! Unfortunately swapping the PSUs made no difference :(
  2. B

    IIfx Running at 16MHz?

    Thanks guys! I've been experimenting: If I jumper J20 on the working IIfx, then I get the exact same symptoms as the slow IIfx. So I guess that explains the slowness and the CPU readings from APD and Tattletech - seem that it's expected behaviour when you jumper J20 to disable the CPU internal...
  3. B

    IIfx Running at 16MHz?

    I'm trying to restore a Mac IIfx. It had some minor battery and SMD cap leakage which were affecting the power on/off circuit, but I cleaned up, reflowed, added a couple of bodges and replaced C9/24 with tantalum caps. To my delight it now boots and launches MacOS 7.5. Everything seems to work...
  4. B

    Micron Xceed w/ Grayscale Adapter Questions

    Did you ever manage to get the gamma adjustment to work? I have exactly the same issue :( In fact, I also had the same issue you mentioned having at the start - no 256 colour/greys option in the monitors control panel. I fixed it by jiggling the boards and harness too. Probably a cracked solder...
Back
Top