20 Sep
2010
20 Sep
'10
2:38 p.m.
Tony Duell wrote:
1) You have ot dispmantle the meter to change the
battery, and it's
assembeled with self-tapping screws going into the plastic case. I don't
know how many insertions they will stand.
*if* you could fix yours, can you modify the case to make some form of hinged
/ clip-on battery compartment so that ceases to be an issue? It probably
doesn't even have to be pretty, so long as it's functional.
2) The most switch used resistive traces on the PCB
with a wiping contact
to connect them to an analogue input on the main chip. If that wiper
didn't make contact properly, it sometimes got into the wrong mode. It
owuld even sometimes power itself up (and flatten the battery) when in
the off poosition.
Can that be solved too, via a different switch and flying leads (I suspect
there's not the clearance, though, or the switch wiring is something unusual?)
Personally, if I've got a tool or bit of equipment that I like, I'll do
whatever I can to keep it going - and so long as it's not something rare, I
don't mind making a few alterations to the original design to make it suit
*my* needs better. I expect you can understand that!
Regarding the LCD, maybe it's a driver issue rather than the LCD itself? How
do signals get from the PCB to the LCD - some form of ribbon cable, conductive
rubber strips, or something else? Maybe dirt's got in there or something?
cheers
Jules