Hi Barak,
Answers in BLUE, below:
BARAK KOREN wrote:
hi all,
i own a neotek elite 40 channel from 1986.
i miss a phase meter in the middle , does anybody knows how i can get
one? I don't know if Neotek ever made one. You may need an external
one or an old oscilliscope set on the X-Y mode.
also looking for moving faders, uptown/GML/ whatever is working ....
Good luck. I'm hearing that a lot of these systems are VERY
un-supported these days. Jump on in anyone that knows otherwise.
i am working on refurbishing the console, witch suffers from a lot of
contact problems on all switches... the plan is to give it a treat in
an ultrasonic bath. anybody have experience with putting a whole
channel strip in these ultrasonic bath? I'm leary of this myself. I
once had a tutorial in the process by a colleague whom I trust, and
who had done it often. It's a very labour intensive process, and VERY
time sensitive, in that if you leave the module in the bath too long
it will start to strip plating off contacts etc. This was in regards
to a console job that I was bidding on. The job went to someone else,
and I heard from my colleague that it did not go well. I have had very
good luck with CAIG F-5 spray into the pots and switches. If you
absolutely have to replace the switches, make SURE that you have a
proper and effective de-soldering tool to get the switches out with NO
FORCE whatsoever. I have run across some re-switched Elite modules
that were very nicely damaged by the plated through holes being pulled
out along with the switch. Also, if you take up a whole switch bank,
make sure the Kapton tape is not damaged in the process...it is there
to keep the switch mounts from shorting some traces on the circuit
board below.
another problem i have is a ground loop in the mixer resulting in a
50Hz hum . the channels will be muted and master +10 DB, monitoring+10
DB , as soon as i start switching channels on (with faders down) the
hum will appear and will sum all channels.
i have checked the power supply and have ordered new components for
the recap, but the problem still arrives from the mixers grounding
method.
if you're familiar with the grounding infra structure of this console
please tip me. It has been my experience that 50/60hz hum is often
from the PS having no connection to the AC (chassis) ground. The only
connections to chassis ground in the PS-3 are through a pair of 2nf
capacitors, C-101 in the 48v section and C-126 in the +/-18v section.
These connect through steel "L" brackets that are screwed to the
circuit board on one end, and into the front panel (C-101) and Left
hand heat sink (C-126) on the other, respectively. I suggest that you
check these screws to make sure they are tight. As well, loosen, and
then re-tighten then 12 Phillips head screws that hold the front and
rear panels to the heat sinks. It doesn't hurt to spray a little
contact cleaner in the gap when they are loose.
At the console end, there are a few things to check, too.
1st, if the power supply connection is through one of the awful
plastic CPC connectors that most 1986 vintage consoles (that I've seen,
anyway) use,
get rid of it. A cheap and effective replacement is mating pair of
Neutrik NL-8 Speakon connectors. I have a pin-out for this somewhere, if
you are interested.
2nd, make sure that all the 0 volt lines from the PS connector
are grounded to the frame.
3rd, consoles of this vintage had a ground strap that went from
the point where the PS grounds to the frame to the motherboard, where it
is attached with a nut and bolt. Make sure these connections are tight.
It may be necessary to connect an external ground wire to the ground lug
on the other side of this point.
Finally, with regard to the wiring of the console, I'm with Tom
Bethel on the "never had a problem" front. The Elites that I have been
involved in the installation of have all had the "one end only"
grounding scheme in effect. That is, the shield of the cables (excluding
the Mic inputs) would be left un-terminated at one end.
Good luck, and let us know how things work out.
Best,
Ike
thanx
Barak, they call me dude ...
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--
Ike Zimbel
Zimbel Audio Productions Ltd.
Toronto
416-720-0887
"Studio House Calls" - Repairs and upgrades to analog audio equipment including:
AMEK, Allen & Heath, Neve, Neotek, MCI, Soundcraft and more.
www.zimbelaudio.com
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questions --please send an email to mailto:[email protected].
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or reply sent to the list will be automatically forwarded to all subscribers.
Vive Le Neotek!
Thanks.
