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#1 2014-06-24 21:43:44

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Color Classic, Occasional Issues Before and After Re-Cap

The Color Classic I
( Main Board )

So it has been known that sometimes these things act strangely.

I am 100% positive any issue that arise with the Color Classic is completely due to failing Capacitors
Wether its the Mis-Operation of the failing Cap's them selves or By-Product issues caused buy the Leaking Cap
GOO into other I/C's and VIA's

1) Some of the time you can re-cap them/ wash, and they are just fine and function properly!

2) Out of these, other times, you power it up, and it boots up fine but no sound gets to the internal speaker
- usually sound does come from the head phone jack.

3) - The big issue

You Remove all the caps, Clean the pads, Wash/Clean the board, Compressor dry.
Install new caps. And…

You install the board, Tap the power button on the keyboard, and…   NOTHING.
just sits there and will not power on.

( Alternate Ways of making the main board come on )
- Slide the board in and out really fast, with the main power switch on.

A slim few of boards this will acutely work.
and the board will boot up and come on…
After you do this, and if it works, Chances are pretty good that you will now be able to power up and shut down the board
properly.

Otherwise,  Sometimes the board will power up but you will only get a grey screen, nothing else will happen, no tone, no boot.
and if you feel around the SOUND chip gets almost NUCLEAR hot.



I havent had the time to really dive into a Mac Classic MOBO yet.
I'v been just capping them as usual, they either work or don't, at this point.

If anyone has already done some testing of their own, and Has any juicy info Or Resolutions
to contribute — in regards to fixing of ANY of the above situations, Please! feel free to mention! and become a star!

Color%2520Classic.jpg



Some people I have herd them suggest: 

Well the color classic needs a fresh pram battery,
and it needs to sit over night… plugged in,  and the next day it will power on

No offense but I find this to be BULLSHIT.

I have herd some other people suggest this, when their (Color Classic I Mainboard acts up):

Pop it out, Set it aside, Find your self a LC520/LC550 or LC575-board + do the MYSTIC.

Yes, those are viable options! However those solutions do nothing to fix the (Color Classic I Mainboard)

I have also herd:
What do you want dude? 

The Color Classic I motherboard is just crap.

And this may be so… But i think there is a logical explanation to the Color Classic I's issues.
If nobody has anything to add i will figure it out, in due time.  Just Asking for help right now
if anyone has any legitimate info, thanks.


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#2 2014-06-24 23:00:21

mcdermd
Member
From: Corvallis, OR
Registered: 2014-05-12
Posts: 1,022
Website

Re: Color Classic, Occasional Issues Before and After Re-Cap

I have a Mac TV board that does the power on and nothing but a hot proc. Wonder if it's a similar issue.


Daily Drivers: 27" iMac 2.8 GHz Quad-Core i7 (Late 2009), 21.5" iMac 2.7GHz Quad-Core i5 (Late 2013), 11" Macbook Air 1.6 GHz i5 (Mid-2011)
See the restored heroes here.

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#3 2014-06-24 23:24:15

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: Color Classic, Occasional Issues Before and After Re-Cap

I wonder if its something strange like the cap goo gets absorbed into one the PCB layers and causes shorts that way, through one of those VIA's?


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#4 2014-06-25 02:59:26

macdrone
Member
From: Rainier, Or
Registered: 2014-05-25
Posts: 246

Re: Color Classic, Occasional Issues Before and After Re-Cap

It is probable, and no way to find the rot really.

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