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Well, the 520c died.
Posted by: Carboy7 on 2016-09-04 17:02:25
Something went boom. Now the 520c is dead. Won't boot. The disk spins up, but other then that, nothing. Ugh. (Is it caps? Maybe...)IMG_0046.JPG

Posted by: techknight on 2016-09-04 17:04:20
May it rest in piece 🙁

You need to measure the output voltage from the power supply, the blackbird power supplies have known leaking and failing capacitors. I had a blackbird back in the turn of the millennium and the caps were already bad. 

Posted by: Carboy7 on 2016-09-04 17:07:39
Ok, something is wrong. It booted again from a hard start...

And made it to the desktop. All the way. There isn't any indication that anything was wrong.

What the heck is going on inside this computer?

Posted by: techknight on 2016-09-04 17:09:07
You need to measure the output voltage from the power supply, the blackbird power supplies have known leaking and failing capacitors. I had a blackbird back in the turn of the millennium and the caps were already bad.

Unplug the power cord from the brick itself and give it a sniff. A good one. Bet you smell fishy fishy. 

The other thing, 2.5" SCSI HDDs are KNOWN for spontaneously failing. 

Posted by: Carboy7 on 2016-09-04 17:14:41
Didn't smell like fish. only hot plasticky smell. Also, what's the power supply voltage?

Posted by: techknight on 2016-09-04 17:18:46
I dont remember off the top of my head, but I believe its labled on the power supply itself. 

Posted by: Carboy7 on 2016-09-04 17:21:19
I got 16 volts on my meter. (EDIT: that's good.) And the powerbook booted again.

Posted by: Elfen on 2016-09-04 19:42:30
Sounds like a Power Supply problem to me. Time to scratch your head and figure out how to open that power brick and replace those darn caps.

Posted by: Carboy7 on 2016-09-05 20:12:31
It looks easy to crack, but who really knows? Not me.

Posted by: Elfen on 2016-09-05 20:47:13
I know the Those Bricks on a Leash have screws on the 5x0 Powerbooks but just in case they are also sealed shut, look at this thread for an idea:

https://68kmla.org/forums/index.php?/topic/26586-opening-a-powerbook-power-brick-revisited/

Posted by: techknight on 2016-09-06 04:41:15
They are sealed as well as screws depending on rev. I remember having to take a flat blade and hammer to it back in 2000 or so.

It was my SimTower machine of the time.

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