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Dave92F1 · (This post was last modified: 03-04-2021 04:54 AM by Dave92F1.)

(03-04-2021 03:24 AM)rprosperi Wrote: Is this unit the early 'press-fit' type or the later soldered type? If you're not sure, a couple ways to narrow it down are it's weight (in grams) and serial number.

I opened it up to clean the power switch (DeOxit Gold) and the chips didn't fall out so I think it's the soldered kind. S/N is 2221S30100, Singapore.

At first I thought it was the power switch too, but as I said I cleaned the switch and tried switching it externally and it does the same thing.

Here's a video of what it does: https://photos.app.goo.gl/ngAsWU7oBhrtS99y5

One thing I've learned since my original post: If I pull out the battery for 5 minutes, then put it back in, usually the first time I turn it on I get "Pr Error", then the second time it starts up OK ("0.00"). And it works OK for the first 5 or 6 keystrokes, then goes nuts again. But if I leave the battery in I get "0.00" on maybe 1 out of 20 tries. Pull out the battery - get "Pr Error" 10/10 tries, then "0.00" 7/10 tries. Something about pulling the battery helps (resetting the continuous memory maybe).