Re: Taking apart Lisa - cleaning

From: Philip Lord <philip_at_email.domain.hidden>
Date: Fri, 4 Nov 2005 00:53:29 +0900

I do not have the plan for the 1.8 amp PSU. I did have the plans for the 1.2 amp, if I can't find it on my computer, I'll download it again.

I have both a 1.2 (not working 95% of the time) and 1.8 amp PSUs. The 1.8 amp PSU is working fine, however preventative maintenance on the caps sounds like a great idea.

Also, If I was to replace the caps on the 1.2 amp PSU at the same time, would there be a good chance that it would bring it back to life? It would be nice to have a spare working PSU.

Al, nice to hear from you again. I've been following your threads over on the Apple II List.
I hate making offers, please let me know how much you would like for the book.
Not sure If I'm interested in the Profile drive, unless you have a dead unit from which I can use the case to mount the IDEfile into?

Thanks guys

Phil

On Nov 4, 2005, at 12:35 AM, Dr. Helmut Post wrote:

> Hi Phil,
>
> do you have a circuit plan of the PSU?
> The 1.2 amp PSU circuit plan is available on the Internet- but the
> stronger
> 1.8 amp PSU plan is only available from John Woodall or James
> MacPhail- he
> has produced these plans.
> You should find the plans on Ebay or : www.vintagemicros.com (John's
> homepage)
>
> I can tell you which caps have to be (or should be) removed.
> It's easy for the 1.2 amp PSU- just tell me if you have the plan.
>
> Helmut
>
> ----- Original Message -----
> From: "Philip Lord" <philip_at_email.domain.hidden>
> To: "LisaList" <lisalist_at_email.domain.hidden>
> Sent: Thursday, November 03, 2005 4:09 PM
> Subject: Re: Taking apart Lisa - cleaning
>
>
>
>> Much thanks,
>> I'll see if I can't track this book down.
>>
>> I just opened up an old broken 1.2amp supply to have a good look
>> inside. Not really sure what is what however.
>>
>> If I can't find the book, would anyone know where the caps that need
>> to be replaced are located? (C-?)
>>
>> P
>>
>>
>>
>> On Nov 3, 2005, at 11:55 PM, Dr. Helmut Post wrote:
>>
>>
>>> Phil,
>>> I forgot to mention the following book:
>>> Macintosh Repair & Upgrade Secrets by Larry Pina
>>>
>>> Hayden books ISBN 0-672-48452-8
>>>
>>> former price (in 1991): $32.95
>>>
>>> There is a big Lisa section inside this book- the removal
>>> procedure of
>>> electrolytic caps is very good illustrated with many pictures.
>>>
>>>
>>> Helmut
>>>
>>>
>>>
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Received on 2005-11-04 00:52:39