Ridiculous question but I have to ask

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2011, December 7 - 5:19am

Macnut9765

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Joined: 2011 Nov 24

Ridiculous question but I have to ask

I seen on another site that someone actually took a motherboard out of a mac that when they powered it on it immediately powered down and repaired it by a thorough cleaning. Sounds reasonable so far however they cleaned it by putting in a dishwasher?? They did say that of course they had it sitting for a full week before testing it. So....okay....is this just someone telling stories or would something like this actually work? BTW, they didn't specify if used the heat dry cycle or Pot's and Pans settings, the just said they ran it through.

The guy who came up with this idea HAS to be related to the first person to look at a cow and say if I squeeze and pull on those I bet I can make a refreshing beverage out of what comes out!

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2011, December 7 - 6:08am

bertyboy

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Joined: 2009 Jun 14

Yeah, read it in the past too, more suitable for the early compact macs that are just dead. So there's nothing to lose by doing this. But the idea comes from the primary cause of death are blown capactiors, which leave a horrible residue on the motherboard. Dishwasher does the trick. Of course, you've still got to replace all the capacitors afterwards.

There are others on this site who have more knowledge of this.

2011, December 7 - 2:35pm

Macnut9765

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Joined: 2011 Nov 24

Interesting to say the least....I have a IIcx that does the power up power down thing because while it was in storage a family of mice made their home in it. I suppose it wouldn't hurt to try it. I'm not sure if there are any capacitors that are blown but I can only guess there is some mouse urine residue that couldn't be of much help. I would assume that the simms should and pram battery get removed first. Like you said, if it's dead it's dead not much to lose. The concept just sounded so far fetched but yet sounded possible at the same time. Aside from what was already mentioned, any other precautions I should take prior?

2011, December 7 - 2:43pm

Protocol 7

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Joined: 2010 Aug 7

My Classic II packed up (white vertical bars onscreen) and I soaked the board (sans ram, rom and battery) for a couple of days in deionised water, then left it on a shelf above my hot water tank for another couple of days to fully dry out. It works perfectly except for the whistling out of the speakers (the caps are going). Ultimately they'll need replacing, but a wash is enough to get the board up and running. That goo has side-effects.

Another (quicker) option would be to scrub it off with isopropyl alcohol.

2011, December 7 - 6:02pm

Macnut9765

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Joined: 2011 Nov 24

Is there a way to find out if the capacitors are failing besides the obviously a visual inspection for this residue. There isn't a way to get a reading on a meter without having power to the circuits so the only other way I would think is a simple continuity test? When it comes to electronics I understand them, know what they do and how but have had limited experience troubleshooting them.