| SE/30 Fan turns on, but OS won't load [message #342353] |
Thu, 15 June 2017 09:16  |
rperlah
Messages: 1
Registered: June 2017
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Junior Member |
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Hello-
I have an old Mac SE/30. Haven't tried to turn it on in years. The last
time I turned it on, it booted up just fine, but now the fan spins and
nothing else much happens. The screen did come on, but it had horizontal
grey stripes and nothing else.
Is it dead? Is there an easy fix?
Many thanks,
Robin
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| Re: SE/30 Fan turns on, but OS won't load [message #342354 is a reply to message #342353] |
Thu, 15 June 2017 10:47  |
Dylan McDermond
Messages: 133
Registered: August 2012
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> On Jun 15, 2017, at 6:16 AM, rperlah@champlain.edu wrote:
>
> now the fan spins and nothing else much happens. The screen did come on, but it had horizontal grey stripes and nothing else.
>
> Is it dead? Is there an easy fix?
Look up “simasimac”. The electrolytic capacitors on the logic board have leaked their electrolytic fluid and are no longer functioning. What’s more, the electrolyte is corrosive and can destroy the logic board if allowed to sit for too long. Simply “washing” the logic board may bring back some functionality but is not going to solve the problem in any sort of permanent way.
If you are good with a soldering iron, you can replace these capacitors yourself. Charles has a cap chart here: http://www.maccaps.com/MacCaps/Capacitor_Reference/Entries/1 989/1/19_Macintosh_SE_30.html
Charles also offers a logic board recap service. Details and contact information are on his site.
- Dylan
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| Re: SE/30 Fan turns on, but OS won't load [message #342360 is a reply to message #342353] |
Sun, 18 June 2017 09:04 |
Scott Shingle
Messages: 3
Registered: June 2017
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Not sure if it's the same issue, but I've seen something about washing the
logic board in a dishwasher to fix a similar issue. Do a scout around
Youtube. I was looking up quite a few classic Mac troubleshooting vids a
few months ago when I got my SE. I didn't have this problem per se, but I
did see some topics along those lines. Hope this helps.
On Thursday, June 15, 2017 at 9:48:26 AM UTC-4, rpe...@champlain.edu wrote:
>
> Hello-
> I have an old Mac SE/30. Haven't tried to turn it on in years. The last
> time I turned it on, it booted up just fine, but now the fan spins and
> nothing else much happens. The screen did come on, but it had horizontal
> grey stripes and nothing else.
>
> Is it dead? Is there an easy fix?
>
> Many thanks,
> Robin
>
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| Re: SE/30 Fan turns on, but OS won't load [message #342362 is a reply to message #342360] |
Sun, 18 June 2017 12:49 |
Dylan McDermond
Messages: 133
Registered: August 2012
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Senior Member |
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> On Jun 18, 2017, at 6:04 AM, Scott Shingle <raydeen@gmail.com> wrote:
>
> Not sure if it's the same issue, but I've seen something about washing the logic board in a dishwasher to fix a similar issue.
This will NOT fix the problem,. It only washes the electrolyte off the board. Without the electrolyte inside the capacitors, they cannot retain their capacitance value. After enough electrolyte has leaked, the board will no longer work. Washing the board will only prevent corroded traces.
Replacing the capacitors is the only real “fix” for this situation.
- Dylan
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| Re: SE/30 Fan turns on, but OS won't load [message #354290 is a reply to message #342354] |
Thu, 12 October 2017 13:29 |
Aoresteen
Messages: 7
Registered: October 2017
Karma: 0
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Junior Member |
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I had Charles re-cap two SE/30 boards & check them out for me a few years
ago. They were doing much like yours are. He did a great job. They now
work great. Highly recommended.
Tony
On Thursday, June 15, 2017 at 10:47:17 AM UTC-4, Dylan McDermond wrote:
>
>
>> On Jun 15, 2017, at 6:16 AM, rpe...@champlain.edu <javascript:> wrote:
>>
>> now the fan spins and nothing else much happens. The screen did come on,
> but it had horizontal grey stripes and nothing else.
>>
>> Is it dead? Is there an easy fix?
>
> Look up “simasimac”. The electrolytic capacitors on the logic board have
> leaked their electrolytic fluid and are no longer functioning. What’s more,
> the electrolyte is corrosive and can destroy the logic board if allowed to
> sit for too long. Simply “washing” the logic board may bring back some
> functionality but is not going to solve the problem in any sort of
> permanent way.
>
> If you are good with a soldering iron, you can replace these capacitors
> yourself. Charles has a cap chart here:
> http://www.maccaps.com/MacCaps/Capacitor_Reference/Entries/1 989/1/19_Macintosh_SE_30.html
>
> Charles also offers a logic board recap service. Details and contact
> information are on his site.
>
> - Dylan
>
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The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml
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