Question about Texas Instruments TI-84 Plus Calculator
Intermittent switching on of any DC powered equipment is caused due to two reasons.
1. Deposition of carbon on battery contacts or increased distance between contacts. Check there is no greenish lair on the calc battery contacts and they do touch both the positive and negative end of the battery.
2. Dry soldering on the power on button. If the soldering on the power on button gets dry due to fair wear and tear then it gets intermittent. In order to rectify this problem you require soldering flux a soldering iron and solder. just remove the on/off button from the mainframe pcb and re-solder it. This will take care of the problem.
Posted on Sep 01, 2010
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Posted on Jan 02, 2017
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