68kMLA Classic Interface

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Mac Plus Crashing Frequently (not software related)
Posted by: Scott Baret on 2017-02-28 05:34:16 My Plus has been acting really strangely lately. It will work fine for about 5-10 minutes, then crash, either by freezing, by displaying a shimmering dialog box (about the size of the standard system bomb box), or by freezing and displaying random garbage on the screen. This is NOT a software issue, as I have booted from various system disks with the same results. This Plus randomly did the dialog box for many years, but very, very rarely. I've had it since 1999 and this problem is a very recent development. It has no other symptoms besides this. Any ideas on what is causing this? My first instinct says bad RAM, but could it be anything on the analog board or even the main board? (Really hoping it's not the analog board...) I don't currently have another Plus logic board to test with but do have a lot of extra 1MB SIMMs pulled from various Classics and SEs.
Posted by: Johnnya101 on 2017-02-28 05:49:51 Probably ram or rom.... as you said. Anything you can swap out to try? EDIT Oh yeah just try the other ram. If it still is happening it could be the rom?
Posted by: techknight on 2017-02-28 09:33:58 Did you recap the analog board? Did you monitor the voltages of the analog board? its becoming an issue in recent times.
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