in the raster world that is pretty much true, I have yet to find a tube that has the same plug, but a different configuration as far as g1, g2 and the guns.
I
----- Original Message -----
From: Joseph Magiera
To: vectorlist@vectorlist.org
Sent: Wednesday, August 03, 2011 7:39 AM
Subject: VECTOR: 6100 tube replacements? (was: Amplifone monitor - still stumped on bright dot in middle)
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 <vg30.510@gmail.com> wrote:
From: Jordan B <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> 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> 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> wrote:
From: John Robertson <pinball@telus.net>
Subject: Re: VECTOR: Amplifone monitor - still stumped on bright dot in middle..
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 :-#)#
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