Re: WG 6100 Brightness / Focus Issues (was: Anyone have a neckboard or a connector for a 19VLUP22?)

(I've forked this thread, since we're no longer talking about finding a tube
socket)

Werner,

I can tell you that is a typical amount of change in voltage over the
monitor warm-up period.

I can't tell you what the exact impact of the lower voltage would be on CRT
behavior (and why).

Where's Rodger when you need him?!?!

One other data point; during the development of the WG 6100 flyback
replacement, I did observe a symptom similar to what you're describing on
certain prototypes. This was with a known good tube, so that tells us it's
_possible_ to electrically cause this problem.

However, that does not mean your tube is good. Do you have a working 6100
you can slip the HV cage into, _before_ you change any adjustments?

For the record and everyone's amusement, another odd symptom I observed on a
certain FBT prototype, was where a picture (unfocused) appeared immediately
upon power up (heater cold). Then, as the heater warmed up, the picture
would actually dim (or go out), then as the heater started boiling, the
picture would re-appear (in-focus) and get brighter and brighter until it
stabilized. I cannot explain this behavior, but it's right up Rodger's
alley, so I'll PM him to respond on-list.

Thanks,
-Mark

On Mon, Jul 19, 2010 at 8:11 PM, Werner Sharp <wsharp@gmail.com> wrote:

> 18.4 kV on startup. 18.6 after 10 minutes or so.
>
> I haven't tried to tweak it up to 19.5 kV yet.
>
> *From:* Mark Shostak <shostakmark@gmail.com>
> *Sent:* Sunday, July 18, 2010 9:32 PM
> *To:* vectorlist@vectorlist.org
> *Subject:* Re: VECTOR: Anyone have a neckboard or a connector for a
> 19VLUP22?
>
> What does the HV do over the same period of time?
>
>
> Sent from my iPhone so delivery may be delayed due to AT&T network
> congestion.
>
> On Jul 18, 2010, at 5:02 PM, "Werner Sharp" <wsharp@gmail.com> wrote:
>
> Now back to monitor troubleshooting....
>
> My one 6100 I just started using takes a long while to brighten up. If I
> first turn it on, the vectors are practically invisible (ZVG menu software)
> but if I turn the brightness all the way up it looks fine. But as it is on
> longer, the vectors brighten and I get a red dot in the center. After 15
> minutes, I've dialed back the brightness knob several times to remove the
> red dot and have it look okay.
>
> Is this a weak tube or some other problem?
>
> Thanks.
>
> -Werner
>
> *From:* Mark Shostak <shostakmark@gmail.com>
> *Sent:* Sunday, July 18, 2010 11:37 AM
> *To:* <vectorlist@vectorlist.org>vectorlist@vectorlist.org
> *Subject:* Re: VECTOR: Anyone have a neckboard or a connector for a
> 19VLUP22?
>
> Andrew,
>
> No problem. Thanks for the clarification.
>
> I have no problem with someone having an opinion different than mine, but
> as you picked up, you can be diplomatic without having to be PC; just
> "wrong" is as good as "completely wrong", or even "here's a different
> view/idea/interpretation/perspective/whatever".
>
> Back to the fuzzy games...
>
> Thanks,
> -Mark
>
> On Sun, Jul 18, 2010 at 10:21 AM, Andrew Welburn < <andy@andysarcade.net>
> andy@andysarcade.net> wrote:
>
>> Mark.. a thousand apologies upon you..
>>
>> I was referencing the second poster 'matt' who said that its supposed to
>> defocus by design...
>>
>> Inadvertantly i said 'mark' when i should have said 'matt' (his last name
>> is not given..) if i had meant you, i would have said your full name. I was
>> 'adding to the vibe' - meaning that i was adding to your correct assertion
>> that it should only occur during the death star explosion but further
>> qualifying it by adding it was only a design 'feature' of Amplifone
>> monitors, the OP has a WG 6100... I was backing you up, but also pointing
>> out that 6100's don't defocus on the death star explosion so 'matt' was
>> completely wrong...
>>
>> My early sunday-morning haze is to blame for saying 'mark' instead of
>> 'matt', and yes, even so, i didn't put it very diplomatically anyway...
>>
>> --
>> Andrew Welburn
>> <http://www.andys-arcade.com>http://www.andys-arcade.com
>>
>> ----- Original Message -----
>> *From:* Mark Shostak <shostakmark@gmail.com>
>> *To:* <vectorlist@vectorlist.org>vectorlist@vectorlist.org
>> *Sent:* Sunday, July 18, 2010 3:43 PM
>> *Subject:* Re: VECTOR: Anyone have a neckboard or a connector for a
>> 19VLUP22?
>>
>> Andrew, would you care to clarify your statement?
>>
>>
>> On Sun, Jul 18, 2010 at 5:12 AM, Andrew Welburn < <andy@andysarcade.net>
>> andy@andysarcade.net> wrote:
>>
>>>
>>> And to add to the vibe, 'mark' is completely wrong, the defocussing was
>>> only a feature of the Amplifones, and only for the death star explosion.
>>>
>>> --- On Sat, 7/17/10, Mark Shostak < <shostakmark@gmail.com>
>>> shostakmark@gmail.com> wrote:
>>>
>>> I have to disagree on that one.
>>>> The de-focusing effect is only supposed to occur _during the death star
>>>> > explosion_.
>>>> In normal operation, both bright and dim vectors should be in focus.
>>>>
>>>
>>>
>> You made the assertion that I was "completely wrong", which, even if it
>> were true, is a pretty inflammatory way to point it out.
>>
>> Then, you proceed to replicate my exact statement. That would make _you_,
>> as "completely wrong", as I.
>>
>> Nice; I appreciate it.
>>
>> -Mark
>>
>>
>>
>

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Received on Tue Jul 20 02:24:13 2010