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Re: power book 520 [message #380522] Sat, 02 February 2019 15:25 Go to next message
Jeff Hubatka is currently offline  Jeff Hubatka
Messages: 16
Registered: May 2013
Karma: 0
Junior Member
On Feb 2, 2019, at 5:07 AM, vintage-macs@googlegroups.com wrote:
>
> The batteries are dead but it will run off of the AC adapter. Any
> solution on the batteries?
>
> It would be easiest to start with a new functional machine, but my son
> wants to try to fix it, and I am ok with that.
>
> What's the best OS to run on the 520? I've noted that it crashes when
> booted with extensions, but will boot to stable with extensions
> off...but then you can't do anything with the machine. It looks like it
> has 8.1 on it...with tons of extensions. We haven't used it for a long
> time; it was my wife's machine back in the day.



It’s been a long time but I remember reading about a refurbishment of the 500-series batteries. It involves cutting the original apart at the seam line and replacing with some Panasonic batteries, I believe it contains six cells.

If it is running 8.1 I think it has to be PowerPC, isn’t it? I have 8.0 on my 100mhz upgraded model.
About to hit the garage to look around…...


JeffH
“Wonder is the beginning of wisdom.”
Socrates

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Re: power book 520 [message #380528 is a reply to message #380522] Sat, 02 February 2019 16:00 Go to previous message
Clark Martin is currently offline  Clark Martin
Messages: 156
Registered: August 2012
Karma: 0
Senior Member

Clark Martin
A designated driver on the information Super Highway

> On Feb 2, 2019, at 12:25 PM, Jeff Hubatka <jhubatka@gmail.com> wrote:
>
> On Feb 2, 2019, at 5:07 AM, vintage-macs@googlegroups.com <mailto:vintage-macs@googlegroups.com> wrote:
>>
>> The batteries are dead but it will run off of the AC adapter. Any
>> solution on the batteries?

Even if you don’t refurbish the batteries, keep them, they may a a good ballast, otherwise the laptop tends to tip over.

>>
>> It would be easiest to start with a new functional machine, but my son
>> wants to try to fix it, and I am ok with that.
>>
>> What's the best OS to run on the 520? I've noted that it crashes when
>> booted with extensions, but will boot to stable with extensions
>> off...but then you can't do anything with the machine. It looks like it
>> has 8.1 on it...with tons of extensions. We haven't used it for a long
>> time; it was my wife's machine back in the day.

It should have extension manager on it. You can use it to enable/disable individual extensions. Use it to turn off half the extensions then reboot it. If it boots okay then the problem is in the remaining half, if not it’s in the group that was enabled. Which ever case, enable half of the remaining suspect group and try again. Repeat till you get it down to the (hopefully) one extension causing trouble.

When you find the problematic extension it may be just a flaky extension or it may be one of it’s data files is corrupt and removing the data file may fix it.

>
>
> It’s been a long time but I remember reading about a refurbishment of the 500-series batteries. It involves cutting the original apart at the seam line and replacing with some Panasonic batteries, I believe it contains six cells.
>
> If it is running 8.1 I think it has to be PowerPC, isn’t it? I have 8.0 on my 100mhz upgraded model.

68040s could run up to OS 8.1.
>

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To leave this group, send email to vintage-macs+unsubscribe@googlegroups.com
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Support for older Macs: http://lowendmac.com/services/
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