HP-21 Disassembly Help...
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04-18-2016, 03:45 PM
(This post was last modified: 04-18-2016 03:49 PM by Katie Wasserman.)
Post: #40
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RE: HP-21 Disassembly Help...
(04-18-2016 03:18 PM)Geoff Quickfall Wrote: They use a silicone grease. A light dab. The old grease tuns hard and becomes a barrier to current causing an intermittent switch. I've been using lithium grease for this, specifically this one -katie |
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