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| Macintosh IIci won't start up |
Posted by: tanuki65 on 2015-04-02 07:53:33
I got a rather dusty Macintosh IIci (M5780) with no RAM or hard drive, marked by the eBay seller as "Powers On". I also purchased a Macintosh Color Display (M1212) which was "tested". I put in some memory from 1-800-4MEMORY on eBay marketed as a 32MB kit (16MB x2) for Macintosh IIci. I bought two of those kits. I put in a 160MB Apple branded IBM hard drive that I had used, tested, and installed a fresh copy of System 6.0.8 through an external enclosure hooked up to a Macintosh SE FDHD (dual floppy).
I had to use a trick from http://shobaffum.com/iici/faq.html#11:
Spoiler content hidden.
When I turn it on I hear the hard drive spinning up, and the IIci fans seem to run, but it doesn't read my known-good System 6 boot floppy (tested on the aforementioned SE). The floppy drive is probably dusty. Nothing displays on the monitor. I don't seem to hear a startup chime, though I might have once with all 4 16MB SIMMs installed.
Any ideas as to what might fix it?
Also, the forum says I originally posted at 7:53 AM! Good for System 7.5.3!
P.S. I have tried with both 2 and 4 SIMMs installed.
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Posted by: tanuki65 on 2015-04-02 09:27:15
Also, it came with an Asante MacConi network card with twisted-pair and 10BASE5. I have tried with it out & in.
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Posted by: olePigeon on 2015-04-02 09:32:49
Hard to tell. The floppy drive probably needs to be cleaned and lubed. The motherboard could use a recap if it hasn't been recapped already.
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Posted by: tanuki65 on 2015-04-02 10:26:51
The motherboard could use a recap if it hasn't been recapped already. I think the capacitors look pretty good (I may post an image tomorrow morning). Is there any chance a video card would help?
The floppy drive probably needs to be cleaned and lubed. Or perhaps a bit of dust in the ROM select jumper. Would taking the floppy drive apart, removing the dust, and then using a floppy disk cleaner disk work?
Could a broken/dusty floppy drive with a floppy in it stop boot?
P.S. The post above was my first!
Edit: I may do https://wiki.68kmla.org/Floppy_Drive_Lubrication.
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Posted by: unity on 2015-04-02 11:15:42
If I were to place a bet, I would put it on motherboard caps. The IIcx/IIci are of the age that its needed, period. I have several and they all need a re-cap. At the very least wash the board well with hot water and light amount of dish soap. Paintbrush works well without being too aggressive. Dry with compressed air or hair dryer. I use a hairdryer and set them in front of a space heater. Then occasionally take the dryer to it. A lot of water can sit in the PDS slot holes and under surface mount chips. Its vital its 100% dry. Cleaning may get it to boot since cap goo is conductive (and corrosive). If it still does not work, the caps are too far gone or they corroded some traces. I use vinegar and a tooth brush to clean traces and remove green corrosion (1/2 hour max soak time, wash again with water/soap).
You may be getting different responses from different power supplies due to output. With bad caps a subtle difference can be a big deal. You can also leave it plugged in for about 10 minutes then try booting again. As mentioned, use the keyboard too. Both power-up methods use a slightly different startup path in the circuit.
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Posted by: tanuki65 on 2015-04-02 11:20:24
I don't see any corrosion, unity.
I'll post some pictures tomorrow morning.
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Posted by: unity on 2015-04-02 11:22:08
Did you remove the drive bay? Corrosion can be very subtle.
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Posted by: tanuki65 on 2015-04-02 11:24:16
Might http://www.ebay.com/itm/Macintosh-IIci-Re-cap-Service-/181702022611?_trksid=p2054897.l4275 help?
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Posted by: tanuki65 on 2015-04-02 11:24:56
I did remove the drive bay, but I wasn't looking for corrosion. I'll look tomorrow morning
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Posted by: unity on 2015-04-02 11:30:29
Thats where I sent my boards for re-cap. He is also a member here. I still have to send him my portable board.
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Posted by: tanuki65 on 2015-04-02 11:35:00
I'll check for corrosion. Maybe he'll read this topic...
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Posted by: tanuki65 on 2015-04-03 07:34:02
I saw some grey stuff at the base of the 16V caps. Plan to clean the board with alcohol on Saturday.
--tanuki65
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Posted by: tanuki65 on 2015-04-05 06:53:15
Cleaned it, works spontaneously. Will send to Michigan for recapping.
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Posted by: olePigeon on 2015-04-14 13:25:21
Oh goody. IIci is my current workhorse. I like it. Good expandability, crazy amount of RAM, easily upgradable to a full 040.
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Posted by: tanuki65 on 2015-04-19 08:58:49
Full '040 - how? I might do that.
Edit: Is it a PDS card? Those are hard to find.
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