heres a little mystery that seems to defy everything that i've learnt

about fixing electronics - 



i've got a little gadget that i use to measure my blood sugar level, it

is a digital device, like a small dmm. you put a drop of blood on a

chemically impregnated strip, and insert it, an optical sensor picks up

the colour change, and gives a reading on an lcd display. it also

remembers the last 50 readings, and picks up bar code from the strip to

calibrate itself.



the day that i left america, it ceased to work, so i tried changing the

3 aaa cells but no go. on my return, i called the manufacturer for

service under warranty. the girl at the service department asked me if i

had reversed the batteries, sensing a trap, i of course denied it.

"well" she said, "try doing that, it usually fixes
them". so i did, and

fix it it did.



i dont see any reason why reversing the battery polarity should fix a

digital device, i'd more expect the opposite, so - any ideas?



                        Keith



... Yeah! I'll shoot! No questions asked!



--- PPoint 1.88