[NTLK] [OT] Mac Classic broken -- leaked caps?

[Paweł Piotrowski]

Hi!

Small tip: Do not use normal alcohol. Even 95%. Regular alcohol can damage something. Instead of this, use ”isopropyl alcohol”.


Cheers,
paul

On 17 Oct 2015, at 20:04, Владислав Коротнев <vladkorotnev at gmail.com> wrote:

> Bringing this up again.
> Every vintage computer collector once in a while has an "Oh shit"
> moment when opening up one of their favorites.
> I finally got to open up my Classic and this is what I found
> 
> http://cs629122.vk.me/v629122119/15d79/yUUQh0oAFkQ.jpg
> http://cs629122.vk.me/v629122119/15d82/qbHCCH4figE.jpg
> 
> I didn't wipe the dust off it (except for a few of the chips, but not
> off the board at all). It's all some kind of sticky liquid.
> Also I noticed the metal frame the whole thing is built around has got
> some corrosion in the bottom-back-righthand corner. Not sure where it
> got from, last time I opened it (circa 2010) it was totally fine.
> 
> Also the ROM chip is slightly different from what I remember having on
> the other Mac that had to be turned into an oscilloscope...
> 
> Measuring out the caps' sizes and getting new ones asap, meanwhile,
> brushing the board with some 95% alcohol just to get it a bit of a
> chance to start.
> 
> 
> 2015-09-21 4:51 GMT+06:00, arceeHS <arceehs at gmail.com>:
>> Hi
>> 
>> Another bit of info. It's for the SE/30 but everything applies here also
>> 
>> http://www.biwa.ne.jp/~shamada/fullmac/repairEng.html
>> 
>> aichess
>> 
>> On 9/20/15, Владислав Коротнев <vladkorotnev at gmail.com> wrote:
>>> We don't have the exact brand of "magic bubbles" but i'll see if i can
>>> find a substitute
>>> .
>>> Regarding the bars btw, I once had a Mac Classic back in 2012 that
>>> shown funky blinking patterns. I suppose it was a faulty/improper ROM
>>> or SIMM. Anyway soon after the HSync generator/amp failed and I turned
>>> it into a funky goniometer-alike music visualiser, still somewhere in
>>> my stacks of stuff... So try and check your ROM to be seated properly
>>> as well :)
>>> 
>>> ----------------------------------------------------------------------
>>> 
>>> http://newtontalk.net/
>>> 
>> 
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>> 
>> http://newtontalk.net/
> 
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> 
> http://newtontalk.net/