"Eeyore" wrote in message
...


Gareth Magennis wrote:

"N Cook" wrote in message
...
Gareth Magennis wrote in message
. ..

"Meat Plow" wrote in message
...
On Sat, 02 Aug 2008 17:24:58 +0100, N Cook wrote:

Meat Plow wrote in message
...
On Sat, 02 Aug 2008 11:01:41 +0100, N Cook wrote:

Intermittant / vibration problems
Models that use 0.15 inch power connector interboard connections
,
loads of them for signals, control and power between 2the 2 main
boards. Otherwise neat idea, line of sockets on each board and
then
the line of pins that would normally by soldered to a board used
to
bridge the 2
sets
of sockets.

The old problem of the pcb holes too large for the solder part
of
each
connection plus not enough solder.
End result , eventually microscopic rings can form around the
periphery
of
the holes.

Peavey has been using these for years in most everything they make
if
I
understand your description. I've not notice a common problem and
I
own/owned a lot of Peavey gear.



The one in front of me has not been obviously abused. There is a
bit
more
rust corrosion on the rear panel connectors than I would like to
see,
perhaps stored in a shed or garage over a winter - but that should
not
produce these ring failures. Because there is no conventional
rigidity
locking the boards together , ie the pin arrays can move at both
ends
then
that should be fairly immune to being heavily leant on or similar.
No
its
oversize holes that are the problem here. The tails from each
socket
pin
are thin strips and should have small slots , not holes the
diameter
of
the strip and a bit, in the pcb, so no unreasonable unsupported
solder.
Just normal thermal movement presumably causes those to fail.

I don't doubt your diagnosis and I have seen similar situations but
I've
seen a ton of those connections and very few have been problematic.
I've
worked on dozens of the CS- series power amps and they relied on
those
connections but I can't recall seeing them fail although there may
have
been an isolated case or two that I don't remember.


I too have repaired a lot of Peavey gear and have never come across
any
connector problem that might be called Generic. Peavey equipment just
doesn't suffer from connector problems, unlike a lot of other
manufacturers.

I suspect you just have a rogue unit.


1990 manufacture date so plenty of time to degrade, maybe being in the
UK
is critical.
Whether inches equivalent of 1.4 x0 .3mm tails in 1.5mm holes or 1.8x
0.3mm in 2mm holes or even 1.5x0.3mm in 2mm holes , I don't know, but
its
not
good practise.
There was one obviously bad ring as a "caldera" plus two other bad on
viewing under a magnifying inspection lamp.

I don't doubt that. I am saying that this is not typical of Peavey gear
in
general.

Peavey is what it is, but whatever it is, it does it quite well for the
price. It has used the same connectors for decades and does not
generally
have problems with them. They are actually pretty robust. IMHO.
Possibly
even overengineered at that price range.

It could be, of course, that this is one design that has fallen beneath
expectations. I have not seen a lot of Peavey mixers as they have never
been that popular in the UK.

But, in this case we are talking about a desk manufactured 18 years ago.
I'd be pretty happy with a cheap desk that lasted this long.

Amen to that ! See how long a Behringer lasts.

Graham


Or if you can persuade the company in the UK which look after them on
Behringer's behalf, to even talk to you, let alone supply parts or service
info ...

Arfa