RE: 6100 tube replacements?

Datapoint: we've used tubes from WG4600's and at least one WG4900 as WG6100
spares at Ground Kontrol before. They converged perfectly and didn't have
appreciable pincushion problems. Maybe we just got lucky with our 'donor'
selections (obviously we moved the yoke and rings from the original WG6100
CRT over).
 
(People don't believe we did this successfully, but both Anthony and I did
it. Maybe some variations of the WG4xxx used 100 degree tubes and we just
happened to have the right mutant versions for parts... I didn't do much
other than look up the CRT P/N's and decide they were "close enough" and
modify the neck key. I'd done far worse things on raster monitors when I
was just starting out in the hobby-- ignorance sometimes results in success
when conventional wisdom would say it's impossible. Course some things
didn't work out-- my Macintosh 20" B/W display -> Vector display without
changing the yoke wasn't so lucky. ;-)
 
YMMV...
 
-Clay

  _____

From: owner-vectorlist@vectorlist.org
[mailto:owner-vectorlist@vectorlist.org] On Behalf Of Pat Danis
Sent: Wednesday, August 03, 2011 11:29 AM
To: vectorlist@vectorlist.org
Subject: Re: VECTOR: 6100 tube replacements?

No. The WG6100 is a 100 degree tube whereas most tubes are 90 degrees. I
have some tubes that are 100 degrees that came out of some 1980's Zenith TV
sets. Jury still out on whether these will work or not. I am halfway thru
the modification. Will post results.

Pat

On 8/3/2011 7:39 AM, Joseph Magiera wrote:

Since a WG6100 uses a CR-23 adapter, does that mean any tube that uses the
same adapter is a suitable tube replacement in a 6100?

Joe

--- On Wed, 8/3/11, Jordan B <mailto:vg30.510@gmail.com>
<vg30.510@gmail.com> wrote:

From: Jordan B <mailto:vg30.510@gmail.com> <vg30.510@gmail.com>
Subject: Re: VECTOR: Amplifone monitor - still stumped on bright dot in
middle.
To: vectorlist@vectorlist.org
Date: Wednesday, August 3, 2011, 12:00 AM

I have used CR-23 adapters on a WG6100. You will have to remove the plastic
end, and the red and green guns will be reversed.
Testing and rejuvenation will work just fine.

Jordan B

On Tue, Aug 2, 2011 at 7:33 AM, Pat Danis <patdanis@verizon.net
<http://us.mc814.mail.yahoo.com/mc/compose?to=patdanis@verizon.net> > wrote:

That isn't quite correct. The WG6100 uses a CR-24 adapter (I believe) and
the amplifone uses a CR-23. If you remove the plastic caps from the end of
the tube, you might be able to use the CR-23 adapter but I cannot be sure.
I just know that the neck sockets are different.

Pat

On 7/25/2011 6:48 AM, Jeffrey Matthews wrote:

Hi;
I have a problem with a WG6100 that has a constant "blue ghost" in the
center of the CRT which I never figured out what was causing it.
FYI, the same adapter for the WG6100 CRT will work on the AMP CRT as well.
Good luck.....
Jeff

On 7/25/2011 12:23 AM, John Huie wrote:

Nope. I don't own a rejuvinator. Anyone out there have one for sale that
works with amplifone's for a reasonably price?

Any chance this would actually help fix it or at least diagnose the problem?

---
Hey John, I am by no means a guru here, but do you have access to a
rejuvinator? They can tell you a few things about the condition of the tube.
Shorts being one of them. 
Jordan B
On Sun, Jul 24, 2011 at 8:38 PM, John Huie <jehuie@sbcglobal.net
<http://mc/compose?to=jehuie@sbcglobal.net> > wrote:
John said, "I suspect that signal is your problem though. Either it is not
coming from the board or it is not amplified by the monitor chassis or
possibly the picture tube has a cathode short and this negates the Z-axis
level completely. Not sure about that last hypothesis though..."
Thank you John.  I'm focusing on that last part you said now because it
makes sense to me.  I'm thinking that you mean if I measure the voltages on
either of the 3 color signals from the SW CPU board that will indicated my Z
signal, correct?  Which is why I really need a scope.
However, since both my SW boards do the same thing and work fine in my other
SW game, they are clearly generating the Z signal.  Which leaves the other
two options.
It seems unlikely that all 3 colors would be having problems amplifying by
the monitor chassis.  And since the dot in the middle is pure white, I think
we can negate that possibility.  I'm not sure this is true but I'm not
getting a lot of feedback so that's my best guess.
So that leaves me with a short in the monitor as being my most likely
culprit.  I tested for a short at the pins and only found a short going from
the heater pins to pin 4.  I'm still not sure if that is ok or not though.
And if it's a problem, whether there is a work around or if it means I'm
screwed and need a new tube.
Help. Pretty please! 
--- On Sat, 7/23/11, John Robertson <pinball@telus.net
<http://mc/compose?to=pinball@telus.net> > wrote:
From: John Robertson <pinball@telus.net
<http://mc/compose?to=pinball@telus.net> >
Subject: Re: VECTOR: Amplifone monitor - still stumped on bright dot in
middle.
To: vectorlist@vectorlist.org
<http://mc/compose?to=vectorlist@vectorlist.org> 
Date: Saturday, July 23, 2011, 7:51 PM
John Huie wrote: 
Just to refresh...this monitor on this Star Wars works good and the graphics
are all there and everything but there's a constant bright dot in the
middle.  If I turn the brightness down enough for the dot to go away then I
can't see the other graphics at all. 
Here's what I've tried so far:
- Bought a whole slew of components from Bob Roberts to rebuild the
deflection board and HV board
- HV is good.
- B+ is good.
- Adjusting color drives doesn't help.  Brightness down and the color drives
up still won't let me turn down dot enough to see graphics well.
- I don't have any spare parts to swap in. I only have 6100 vectors other
than this.
- double checked continuity from focus block wiring, all connections under
boots are good. Good continuity back to HV board and color drives on
deflection board are good.
- Pins on neck not shorted to heater pins.  (Except pin 4 which isn't used -
could this be a problem?)
- W jumpers are all long gone.
- Resistors in neck board/ring are good.
- Does same thing with known working PCB set.
- Reflowed J103 and tested continuity along wires.
- Ground to neck board/ring is good.
Still not sure how to check Z signal. What components should I be looking at
that are common to all 3 colors that could be causing this?
Any other idea?
Thanks everyone. I'm working on this for a friend of mine and just about at
the end of my rope.	
Z-Signal is the brightness. What sort of test equipment do you have? A
'scope would be best - you could check that the signal is varying. An AC
setting on your multimeter will give you an idea if there is change on that
signal, but I do not know what the result should be for your meter or
situation. If someone here has a voltmeter and can see what reading they get
on the Z-level when the board is on a set screen test that would help you
figure out if yours is working properly. 
I suspect that signal is your problem though. Either it is not coming from
the board or it is not amplified by the monitor chassis or possibly the
picture tube has a cathode short and this negates the Z-axis level
completely. Not sure about that last hypothesis though...
John :-#)#
-- 
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
                 www.flippers.com <http://www.flippers.com/>  
"Old pinballers never die, they just flip out"
---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
<http://www.vectorlist.org/>  ** Please direct other questions, comments, or
problems to chris@westnet.com
<http://us.mc814.mail.yahoo.com/mc/compose?to=chris@westnet.com>  
---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
<http://www.vectorlist.org/>  ** Please direct other questions, comments, or
problems to chris@westnet.com
<http://us.mc814.mail.yahoo.com/mc/compose?to=chris@westnet.com>  
---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com