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(Post Link) post #1 of 10 Old 19-01-15 Thread Starter
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Circuitboard fix

Am I likely to be able to find someone able to replace the circled switch?

Is the switch quite a standard piece of kit? The important thing is that the replacement would have to stand off the board by an identical height (or very, very close at least)
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Pretty much an off-the-shelf part.

You have to work out what throw /how may poles etc.

RS or Farnell will have a huge selection.
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It's actually just occurred to me that if the tamper detection is a closed circuit, then I could potentially fix it by just knocking the switch off the board.

Don't think I'm going to risk that though!
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Did you fix your laptop?
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(Post Link) post #5 of 10 Old 19-01-15 Thread Starter
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Good question. I'll answer it in the right thread.
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What's the board from?
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(Post Link) post #7 of 10 Old 20-01-15 Thread Starter
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Burglar alarm keypad. It's the tamper switch. Is held in by a spur on the mounting plate, with the intention being it is let go if anyone moves the panel, and that sets off the tamper alarm. But the switch seems to be failing, so it's going off randomly.
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Just short it then.
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Except I don't know whether shorting it will result in it never detecting a tamper, or always detecting a tamper!
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Again you need to find out what kind of switch it is.

Just unsolder it and check across the terminals with an ohmmeter whilst pressing/not pressing it.
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