Scratched contacts
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Scratched contacts
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Recursive Acronym


Advanced Member


Joined: 11 Dec 2006
Posts: 499
Posted: 15 Jun 2007 08:26:02 pm    Post subject:
My 83+ has recently has been having contrast problems. The contrast will fluctuate, and usually even the highest contrast level is dim. I took it apart, and nothing was apparently wrong with the LCD or the LCD board. I did notice that two gold contacts on the circuit board were badly scratched. These were the contacts where the wires from the main batteries brought power to the rest of the calculator. I think that the scratches are causing the LCD to be low on power. Is there some sort of liquid that I can drop on the contacts to fill the scratches, or is there some other fix?
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Harrierfalcon
The Raptor of Calcs


Super Elite (Last Title)


Joined: 25 Oct 2006
Posts: 2535
Posted: 15 Jun 2007 09:50:01 pm    Post subject:
OK, I know this is a fix for scratched CD's, but perhaps, with luck, it will work here too. Try swabbing it with a Q-Tip with toothpaste on it.

No guarantees, just throwing out ideas.
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alexrudd
pm me if you read this


Bandwidth Hog


Joined: 06 Oct 2004
Posts: 2335
Posted: 15 Jun 2007 10:55:51 pm    Post subject:
Do you have any friends that can put a drop of solder on it for you? I don't think toothpaste is going to cut it.
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Jim e


Advanced Member


Joined: 05 Sep 2005
Posts: 360
Posted: 15 Jun 2007 11:30:25 pm    Post subject:
http://en.wikipedia.org/wiki/Pencil_trick
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