Sigma BC800 computer. How do I open it?

[dicko]

I have a rather old BC800 Sigma Sport bike computer. Through the
years it's had its share of dust and rain and sweat and all kinds of
stuff poured on it. Now the buttons are gummed up. Press them in and
they dont pop back out. You have to physically pull them out.

What I want to do is open the case and give the buttons a good
cleaning.

I've tried sliding a putty knife in the crack around the case and
twisted, but I cant budge the thing. I suspect it was either
ultrasonically welded together or it just snaps together with so much
force, nothing will pry it apart.

So, has anyone ever successfully opened one of these things? Or should
I just forget it and buy a new computer?

-dickm

 

[Martin Borsje]

dicko thought the rest of the world was interested to know that
> I have a rather old BC800 Sigma Sport bike computer. Through the
> years it's had its share of dust and rain and sweat and all kinds of
> stuff poured on it. Now the buttons are gummed up. Press them in and
> they dont pop back out. You have to physically pull them out.
>
> What I want to do is open the case and give the buttons a good
> cleaning.
>
> I've tried sliding a putty knife in the crack around the case and
> twisted, but I cant budge the thing. I suspect it was either
> ultrasonically welded together or it just snaps together with so much
> force, nothing will pry it apart.
>
> So, has anyone ever successfully opened one of these things? Or should
> I just forget it and buy a new computer?
>
> -dickm

forget and buy a new one.

you will never get it (nearly) watertight...

Martin

 

[landotter]

dicko wrote:
> I have a rather old BC800 Sigma Sport bike computer. Through the
> years it's had its share of dust and rain and sweat and all kinds of
> stuff poured on it. Now the buttons are gummed up. Press them in and
> they dont pop back out. You have to physically pull them out.

More than one button?? Must be old. It's not popping apart any time
soon, but using your wife's toothbrush and some dish soap, you should
be able to clean the gunk out. It *is* waterproof, right?

 

[datakoll]

NASHBAR NASHBAR has a yawwwwwwwwwwwwwwwn sale on

got any elctircla cleaner like ah Jiffy ? spray that stuff has citric
acid and silicone, tothbrush edges and presto
DEAD BC800
works everytime
seriously electric contact cleaner prob from RSchuck is a WELCOME SHOP
ADDITON
prob with gtaking that stuff apart gotta askurself
was it meant tube? well wazit?
anyway ura supposed to eyeball the equipment, removing tar and added
buildup BEFORE not after.
I have one outta the trash. no kidding. doano if it works or not but
there it sits in the elec box.
I'll put it on EBay und yawl can bid onit

 

[John Tserkezis]

dicko wrote:

> So, has anyone ever successfully opened one of these things? Or should
> I just forget it and buy a new computer?

I have a later model that's still new, so never had to try. From the looks
of things, it's either securely clipped in (one way only), or it's factory
glued in place.

Either way, owing to the trouble you have to go to take it apart, then
reassemble to the point that it's going to be useful, will probably not be
worth the replacement cost.

I know it's taking the easy way out, but looking at economics first for
repairs has been beaten into me in recent years: Toss it and buy a new one.
--
Linux Registered User # 302622
<http://counter.li.org>

 

[datakoll]

DEAR LINUX USER,

yeah but if ura gonna toss it
WHY NOT TRY TO FIX IT?

 

[datakoll]

TOADY NASHBAR OFFERS FREEEEEEEEEEEEEEEEE SHIPPING

and a $10 cyclometer