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thank you bruce. would you know if the 501 is similar to the 803? mine gave up the ghost and i wonder if i can fix it myself. there is virtually nothing to be found on the 501 online.
connectivity was o.k., i soaked the scale in hot dish soap water and rinsed the head and electronics with propanol. now it works again. was probably a piece of dirt blocking the optics.
I have been using the scale without any seals for 15 years and p.o. probably for a few years too. i found remnants of the seals, a brownish, crumbly substance soaked in oil. it looked like some candy and i was tempted to try how it tastes. what could it have been? cork?
btw, why is propanol better than ethanol? is a bit more polar, but does that make a difference? its very hard to get and the cost is several times higher.
oh, and i was not able to remove the reading head from the aluminum block. never found out how its attached. maybe glued, but what a strange idea, as there are nice mounting holes.
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