RE: 25" Amplifone (Star Wars cockpit) repair help

A Wintron should ring at least a 3.

If it stays at 1 or 0, it's probably bad.

The Wintron is built way over spec, so it lacks some of the ringing
qualities that a HV transformer usually has.

A red one should ring in the green or high yellow range.

JB

-----Original Message-----
From: Bret Pehrson [mailto:bret@infowest.com]
Sent: Wednesday, March 06, 2002 1:13 PM
To: vectorlist@synthcom.com
Subject: RE: VECTOR: 25" Amplifone (Star Wars cockpit) repair help

> they did some pretty rough tests on it. Maybe someone can
> explain what you should expect to see when you're ring
> testing a Wintron. ??

I've tested a couple of working Wintrons on my tester, and they *always*
ring low/bad -- from what I understand, this is normal for these units
due to internal damping...

If you have a scope, hook it up in parallel w/ the LOPT tester when you
are ringing it, and you will see visual results -- my guess is that if
you see any type of decent sine wave, the unit is good. I don't have a
bad Wintron to compare to, but I'd expect that you would see nothing at
all on the scope for a bad unit.

> -----Original Message-----
> From: owner-vectorlist@synthcom.com
> [mailto:owner-vectorlist@synthcom.com] On Behalf Of Matt Rossiter
> Sent: Wednesday, March 6, 2002 9:06 AM
> To: vectorlist@synthcom.com
> Subject: Re: VECTOR: 25" Amplifone (Star Wars cockpit) repair help
>
>
> > I was all set to do this tomorrow night when I found the
> vector list
> > and read a few posts I could find in the archive on the
> Amplifone. I
> > started to get really worried when I saw a few posts
> mentioning brand
> > new Wintron HV units that died when adjusting focus and brightness.
> > Now I'm worried. What if anything am I missing? I don't
> want to take
> > any chances blowing up my new HV unit. It would just about
> crush me to
> > have that happen after finally getting all worked up for this job.
> > Should I just replace every single component I listed above
> > reguardless if those parts test good or bad?
>
> I wouldn't worry about this. I was the one who posted that
> my Wintron had died. At one time my high voltage went out,
> and for some reason when I did a ring test using my LOPT
> tester I was getting lots of reds and yellows - meaning not
> good. My warranty was almost up and I didn't want to miss the
> chance of not being able to get it replaced. So I called
> Wintron and they asked me to send it in for testing. They
> found that the transformer wasn't bad after all - in fact
> they did some pretty rough tests on it. Maybe someone can
> explain what you should expect to see when you're ring
> testing a Wintron. ??
>
> I should have posted a follow up that thread I guess. These
> babies are pretty tough. I can't remember what the problem
> really was - because it just started
> working again. I would recommend that you put new 2n304's
> and a new A06
> transistor on you HV unit. When they go out - it's pretty
> quiet and the screen simply goes out. Anyway - I have two
> machines with amplifones in them and they work pretty good.
>
> Hope that relieves your worries.
>
>
> Matt
>
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Received on Wed Mar 6 11:35:48 2002