Hello, I'm resurrecting my old beloved Macintosh 128K and recently had it reramed by Charles at Maccaps. After buttoning things back up and turning on the power, I noticed my disk drive had the "click of death" and unplugging the rear sensor from the logic board and cleaning it didn't correct the problem. I ordered another used internal 400K drive from an ebay seller, removed the logic board from it, and installed it on the original internal drive ensuring the connections were cleaned, lubricated, and secure. The computer now makes a bong sound on startup and the disk drive no longer exhibits the "click of death". However, the monitor screen shows a disk icon with a question mark in it and when I put an original MacIntosh 128k system disk in the drive it spins it for a short time and then the drive ejects it. A blinking "X' then appears in the disk icon on the monitor screen. This occurs with the other Apple software disks I've inserted as well. I've cleaned the drive head gently with alcohol and a q-tip and that made no difference. I do not have an external 400K disk drive and the software disks I inserted were original Apple System and software disks and not ones I had formatted on another drive with a different head alignment.
I do not have a battery installed and cannot find any information that would indicate that one is necessary to boot this computer. If this is the problem, then please let me know. That is an easy fix.
The "new" used 400K drive from which I got the logic board is a Sony Model OA-D34V-22, No. 1136443 with a date of September 1985. It has a rectangular sticker on the stepper motor. My original drive is a Sony Model OA-D34V-02, No. 639916 with a date of June 1984. It has a rectangular label on the stepper motor. My MacIntosh 128K was built in week 32. I'm not sure if the "new" logic board is having a conflict with the ROMs on the MacIntosh's motherboard. Perhaps one of you could give some insight to this.
I am performing the disk drive tests with the computer case removed, the disk drive plugged into the motherboard and resting metal-to-metal on the MacIntosh's chassis. The drive was always very clean with no visible dust or corrosion and has been cleaned and lubricated with Deoxit. The head was cleaned with alcohol after the drive cleaning and lubrication.
Nothing has been recapped in this computer or disk drive.
If the battery and disk drive logic board are not the issues, do I have a possible head alignment issue and, if so, how is that rectified? Or is there another problem I have not considered?
Thank you so much for your expert help!
I do not have a battery installed and cannot find any information that would indicate that one is necessary to boot this computer. If this is the problem, then please let me know. That is an easy fix.
The "new" used 400K drive from which I got the logic board is a Sony Model OA-D34V-22, No. 1136443 with a date of September 1985. It has a rectangular sticker on the stepper motor. My original drive is a Sony Model OA-D34V-02, No. 639916 with a date of June 1984. It has a rectangular label on the stepper motor. My MacIntosh 128K was built in week 32. I'm not sure if the "new" logic board is having a conflict with the ROMs on the MacIntosh's motherboard. Perhaps one of you could give some insight to this.
I am performing the disk drive tests with the computer case removed, the disk drive plugged into the motherboard and resting metal-to-metal on the MacIntosh's chassis. The drive was always very clean with no visible dust or corrosion and has been cleaned and lubricated with Deoxit. The head was cleaned with alcohol after the drive cleaning and lubrication.
Nothing has been recapped in this computer or disk drive.
If the battery and disk drive logic board are not the issues, do I have a possible head alignment issue and, if so, how is that rectified? Or is there another problem I have not considered?
Thank you so much for your expert help!