On May 15, 8:14*pm, Merciadri Luca wrote:
On May 15, 6:47*pm, "Michael Kennedy" wrote:

"Merciadri Luca" wrote in message

....
On May 15, 3:13 pm, ChrisCoaster wrote:

On May 15, 7:21 am, Merciadri Luca wrote:

On May 15, 3:59 am, ChrisCoaster wrote: In
hindsight, no buttons should have been pressed even after you wiped
off the exterior of the calculator. That is - no circuits should have
been allowed to complete - what happens when you press buttons on the
calc. The calc should be dismantled - if readily so - and allowed to
dry under a bright lamp or the sun. Reassemble and it *should* work
like new. That was all that was spilt on it - water?

Yes, only water. The problem is that water was spilt on it not only
all over one face, but over both faces.

After having opened it, etc., I also realized that the main board is
slightly broken at its end: some circuitry portion is raised upward,
showing some slight damage, probably done with a screwdriver. I assume
that the whole stuff was sticking out because after having opened the
calculator (to see this and to check connections) and closed it, it
does not work anymore. I re-opened it, did my best to join both parts,
but it does not want to work anymore. Is it ready for the trash? It
only shows slight damage.

Thanks.

_______________
That slight damage to the circuitry may be all it takes. The width of
the paths of those ciruits is designed to carry specific voltages with
a specific resistance. If one is cut even slightly through the proper
voltage(signal) will not reach its intended destination. That is all
I know about that and someone else may have a better answer.

In addition, they may also have a better answer than the one already
provided to the problem I posted about my JVC VHS-DVD combo video
heads(!)

Thanks. I'll wait for other messages. Such a pity. I liked this
calculator

Do you have a soldering iorn? If so you can fix the broken traces. It isn't
that complicated with a little practice..

Maybe someone around here knows a good website for soldering techniques.. Or
just serarch the history of this group. It has been discussed many times.

Thanks. I'll try to get one, and to make it work. But chances to
succeed seem to be very low: this is a thin board, just like thehttp://alexpb.com/notes/wp-content/u...oard_electroni...
(where some conducting `lines' [sorry, i'm such a newbie in this] have
been broken).

Okay, you might check
http://www.student.montefiore.ulg.ac...n/dsc01473.jpg
(broken board)
http://www.student.montefiore.ulg.ac...n/dsc01476.jpg
(ditto)
http://www.student.montefiore.ulg.ac...n/dsc01477.jpg
(ditto)
http://www.student.montefiore.ulg.ac...n/dsc01478.jpg
(red conn ok)
http://www.student.montefiore.ulg.ac...n/dsc01479.jpg
(ditto)
http://www.student.montefiore.ulg.ac...n/dsc01480.jpg
(black conn ok)
http://www.student.montefiore.ulg.ac...n/dsc01481.jpg
(ditto)
http://www.student.montefiore.ulg.ac...n/dsc01482.jpg
(screen ok)
http://www.student.montefiore.ulg.ac...n/dsc01483.jpg
(ditto)

for pictures of the problem. I could use a soldering iron, but would
it ever come it to life?