68kMLA Classic Interface
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| Click here to select a new forum. | | Dead 512k Hyperdrive - still worth it? | Posted by: Elfen on 2016-01-21 17:23:29
If it were a ceramic cap, it would have blown to pieces. A Thyrisistor is like a cap but more so; it is like a fuse but more so. On it's own it does not do much but in a grounded circuit, when its trigger voltage it hit (as in a spike), it sends everything straight to ground to protect the main circuitry from getting fried. Or so goes the theory; as everything else in life, they do fail with age and like a bullet proof vest, it can only be hit so many times before they fail or trigger.
| Posted by: BadGoldEagle on 2016-01-21 22:20:15
This was one of JDW´s photos, not picts from the actual mac for sale. I'll get some this week end'
| Posted by: BadGoldEagle on 2016-05-08 02:04:22
I know I'm stubborn but I'd really like to own a Hyperdrive! 5 months later I still fancy one.
Although the computer isn't available on ebay anymore, I found the seller's phone number. So if I get an answer I can give him a call and hopefully buy it from him directly if he didn't throw it away.
olepigeon has the Hyperdrive disks and he uploaded the original manual on the garden.
This is interesting: there were two kinds of Hyperdrive Analog Boards. One has a voltage select jumper.
It doesn't say though if it's protected or anything, but maybe I'm blind?
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