Digest for sci.electronics.repair@googlegroups.com - 13 updates in 2 topics

Mike Tomlinson <mike@jasper.org.uk>: Mar 18 06:13PM

En el artículo <37cc548b-c211-4846-a1df-54c46f865865@googlegroups.com>,
 
>why do the British drink
>warm beer?
 
So we can actually taste it. Have you drunk warm American beer? It's
icy cold to hide the fact that it tastes bloody awful. QED.
 
:)
 
--
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(='.'=) Bunny says: Windows 10? Nein danke!
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Gunther Heiko Hagen <guntherxxx@quantserve.de>: Mar 18 06:48PM

On Fri, 18 Mar 2016 18:13:46 +0000, Mike Tomlinson wrote:
 
 
> So we can actually taste it. Have you drunk warm American beer? It's
> icy cold to hide the fact that it tastes bloody awful. QED.
 
> :)
 
They don't appear to use hops for flavouring in N. America and Australia,
so it's not really beer at all but 'malt liquor' to be more accurate.
Young British men who don't know any better seem quite happy to drink
such monstrous concoctions as Coors, Bud and Fosters because they don't
know any better and fall for the flashy advertising and glitzy looking
dispensers. The best beers in the world - proper beers - are brewed by
the Belgians, the Czechs and the very best of all of course - the Germans.
Jon Elson <jmelson@wustl.edu>: Mar 18 02:05PM -0500

Cursitor Doom wrote:
 
> board *on top* of the coating. So it's doubtful they could cause any
> short circuits unless by sheer chance the tip of one of them hits another
> spot of coating that's broken down above a trace
 
Hmmm, very interesting. If they have GROWN out of the board, especially
from the vias, then they have a really good chance of being conductive.
And, maybe the ones across the TOP of the coating are no problem, but if
there are some on the back side or under the coating, they could cause
trouble. If the conformal coat has broken down, moisture and various
contaminants could have gotten under it and started making conductive paths.
If the controller depends on some high impedance circuitry, that could cause
it to quit.
 
If these things are on TOP of the coating, then it should be easier to make
a conductivity measurement. (But, yes, I see you say they are brittle.)
 
Jon
Cursitor Doom <curd@notformail.com>: Mar 18 08:57PM

On Fri, 18 Mar 2016 14:05:57 -0500, Jon Elson wrote:
 
> If these things are on TOP of the coating, then it should be easier to
> make a conductivity measurement. (But, yes, I see you say they are
> brittle.)
 
Indeed they are - very! Anyone who can come up with a method for
establishing if they're conductive and if so, to what extent deserves a
Nobel Prize, I reckon.
Sjouke Burry <burrynulnulfour@ppllaanneett.nnll>: Mar 19 12:26AM +0100

On 18.03.16 21:57, Cursitor Doom wrote:
 
> Indeed they are - very! Anyone who can come up with a method for
> establishing if they're conductive and if so, to what extent deserves a
> Nobel Prize, I reckon.
 
Going for the nobelprice then. :)
Apply a very small drop of salt water to the tip of
one of those out grows then one side of your ohmmeter
to a ground and the other side gently touching the
drop of water.
If the whisker conducts, that should show up.
Cursitor Doom <curd@notformail.com>: Mar 19 01:12AM

On Sat, 19 Mar 2016 00:26:58 +0100, Sjouke Burry wrote:
 
> grows then one side of your ohmmeter to a ground and the other side
> gently touching the drop of water.
> If the whisker conducts, that should show up.
 
Thank you for that, Sjouke. I'll ponder this idea of yours as I can see
some merit in it. the only problem AISI is these fibres are so tiny it's
going to require a steady hand and a good eye - but I have neither! :(
However, it's very late here now so I'll report back tomorrow with the
results - *if* I can pull it off.
Mike Tomlinson <mike@jasper.org.uk>: Mar 19 01:23PM

En el artículo <nchih2$j56$1@dont-email.me>, Gunther Heiko Hagen
 
>The best beers in the world - proper beers - are brewed by
>the Belgians, the Czechs and the very best of all of course - the Germans.
 
Yep. I was thrilled when I went in a little off-the-beaten-track bar in
a remote part of the Canary islands to find they had three chiller
cabinets stuffed with craft Belgian and German beers.
 
Have my tickets booked for Oktoberfest :)
 
--
(\_/)
(='.'=) Bunny says: Windows 10? Nein danke!
(")_(")
"Gareth Magennis" <soundserviceleeds@outlook.com>: Mar 18 07:37PM

"N_Cook" wrote in message news:ncgstc$nn4$1@dont-email.me...
 
Confirmed by the owner. I find it amazing that Gibson do not supply user
manuals with any new guitar. So how is an owner supposed to know that
you have to unplug the guitar lead, to switch off the battery, let alone
anything else?
 
 
 
 
 
 
All active guitars have this function.
Likewise, all battery powered guitar effects pedals also have this function
via the switched input jack socket.
 
 
Most owners of such products who don't know about these functions soon find
out when the battery goes dead and they ask their mates why.
 
 
 
Gareth.
N_Cook <diverse@tcp.co.uk>: Mar 18 07:56PM

On 18/03/2016 19:37, Gareth Magennis wrote:
 
> Most owners of such products who don't know about these functions soon
> find out when the battery goes dead and they ask their mates why.
 
> Gareth.
 
Are we in the 21 century?
The owner only tended to use one setting of all the 3 switches, just
changing the rotary controls, plus lead connected all the time to the
amp, so internal battery on all the time. Switching the small toggle
switch on and off assuming that turned the internal amp on and off. This
was from new and unless it fell off somewhere it looks as though Gibson
does not even put a little soft cover over the spindle of that switch,
so bare metal, unlike the normal 3 way switch which does have a soft
cover. Avoids static clicks , if nothing else, getting through to the
output.
"Gareth Magennis" <soundserviceleeds@outlook.com>: Mar 18 08:02PM

"N_Cook" wrote in message news:nchmb6$3i9$1@dont-email.me...
 
On 18/03/2016 19:37, Gareth Magennis wrote:
 
> Most owners of such products who don't know about these functions soon
> find out when the battery goes dead and they ask their mates why.
 
> Gareth.
 
Are we in the 21 century?
The owner only tended to use one setting of all the 3 switches, just
changing the rotary controls, plus lead connected all the time to the
amp, so internal battery on all the time. Switching the small toggle
switch on and off assuming that turned the internal amp on and off. This
was from new and unless it fell off somewhere it looks as though Gibson
does not even put a little soft cover over the spindle of that switch,
so bare metal, unlike the normal 3 way switch which does have a soft
cover. Avoids static clicks , if nothing else, getting through to the
output.
 
 
 
 
 
I should imagine that if that switch turned the power on and off, there
would be an almighty BANG which would raise far more eyebrows than a
piffling static click. :)
 
 
Gareth.
Phil Allison <pallison49@gmail.com>: Mar 18 11:25PM -0700

Gareth Magennis wrote:
 
> manuals with any new guitar. So how is an owner supposed to know that
> you have to unplug the guitar lead, to switch off the battery, let alone
> anything else?
 
** Err - ever see this?
 
http://archive.gibson.com/RobotGuitar/robot-guitar-manual.pdf
 
 
> All active guitars have this function.
 
** So what?
 
There are many who have never seen one before.
 
> Likewise, all battery powered guitar effects pedals also have this function
> via the switched input jack socket.
 
** They all come with manuals.
 
 
> Most owners of such products who don't know about these functions soon find
> out when the battery goes dead and they ask their mates why.
 
** Then there are the others who blame bad batteries or annoy technicians with nonsense stories about the pedal being faulty.
 
More than once I have had to ask if the owner left leads plugged in overnight.
 
I really like the ones who insist their battery operated pedal hums.
 
 
.... Phil
Phil Allison <pallison49@gmail.com>: Mar 18 11:28PM -0700

N_Cook wrote:
 
> Confirmed by the owner. I find it amazing that Gibson do not supply user
> manuals with any new guitar.
 
** Gibson have always supplied owners manuals:
 
http://www.manualslib.com/brand/gibson/guitar.html
 
More than 200 of 'em there.
 
 
..... Phil
N_Cook <diverse@tcp.co.uk>: Mar 19 12:59PM

On 18/03/2016 20:02, Gareth Magennis wrote:
> would be an almighty BANG which would raise far more eyebrows than a
> piffling static click. :)
 
> Gareth.
 
This is very light load of 9V , one FET, and 22K in line with "B+".
With old battery 4V over the circuit and it worked, tried on
DVM-bat_test and 0.02V registered, and about 6V on DVM-V.
I would have thought a SM 10uF cap downstream of that 22K would do the
job of switch-on bang, perhaps switch-off fart would be frowned-on, but
there is already a muting subcircuit there, so perhaps 3PDT switch instead.
Had another go at trying to find a user manual for a classic 2014, specs
yes, but no user manual to explain about that toggle switch, mute/boost
or normal/boost variants
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