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[HP48GX] Testing repaired keyboard
07-21-2016, 09:29 AM (This post was last modified: 07-21-2016 09:34 AM by fnas.)
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[HP48GX] Testing repaired keyboard
I need advice to do the testing on a HP48GX. I have opened the calculator because the ON key wasn't working. So I placed under the flatpack a piece of rubbery scotch tape to be thick. But before closing the calculator I want to test if everything works. I connected the calculator to terminals of a 4.5V stack. Now as I can see if the PCB and flatpack makes contact? The negative pole is connected to the PCB only through the twists hooks? I attach same photos

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[HP48GX] Testing repaired keyboard - fnas - 07-21-2016 09:29 AM

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