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<DIV>Tony has a good suggestion. Everyone is assuming that it is a machine
or head issue. I think there is a tape issue that the AVR-3 is not able to
correct . </DIV>
<DIV> </DIV>
<DIV>Do you have access to any other machine that you could try the tape?
I think you need to start thinking about this from another side. When you
say that the De mod out has problems, I would consider other
possibilities. </DIV>
<DIV> </DIV>
<DIV>Does the label say High Band?</DIV>
<DIV> </DIV>
<DIV>If not, how about Low Band Color (LBC)?</DIV>
<DIV> </DIV>
<DIV>How does the sync level to video look at the De Mod out?</DIV>
<DIV> </DIV>
<DIV>If it is not 100 over 40, that is an indication that the tape may not be
high band.</DIV>
<DIV> </DIV>
<DIV>How about taking a picture of the waveform and picture at De Mod out and
posting it?</DIV>
<DIV> </DIV>
<DIV>Or even a video showing the problems.</DIV>
<DIV> </DIV>
<DIV>That will give us an idea of what is going on.</DIV>
<DIV> </DIV>
<DIV>Chris Hill</DIV>
<DIV>WA8IGN</DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 8/2/2011 12:46:06 P.M. Eastern Daylight Time,
vmi@csprings.com writes:</DIV>
<BLOCKQUOTE
style="BORDER-LEFT: blue 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><FONT
style="BACKGROUND-COLOR: transparent" color=#000000 size=2 face=Arial>
<DIV>Lee,</DIV>
<DIV>We should be able to help you out. If you could send us a couple
of the tapes in question and the head block we can see what we can do to
adjust the head block to match the recording on the tape. </DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>Thanks Tony</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=mailto:lasvegastvengineer@yahoo.com
href="mailto:lasvegastvengineer@yahoo.com">lee williams</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=mailto:quadlist@quadvideotapegroup.com
href="mailto:quadlist@quadvideotapegroup.com">Quad List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, August 02, 2011 10:01
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [QuadList] AVR 3 heads
question</DIV>
<DIV><BR></DIV>
<TABLE border=0 cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD vAlign=top>Hello Tony, <BR>Please review the original question.
<BR><BR>All NEW heads ( have gone through 4 in the last 2 years) will
not play the old tape stock. <BR>Only 1 very old head (that is now
wearing out) will make a clean picture. <BR><BR>I know ( guess) the
stock was not recorded properly, but what ever is off on the
recordings is constant. <BR><BR>Is there a way to reproduce what ever
is tweaked on that odd ball head because my client has a couple of
thousand tapes that this head was the only thing that would play them?
<BR><BR>Thanks <BR>Lee <BR><BR>--- On <B>Tue, 8/2/11,
<SPAN><SPAN>Videomagnetics</SPAN></SPAN>
<I><vmi@csprings.com></I></B> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From:
Videomagnetics <vmi@csprings.com><BR>Subject: Re: [QuadList]
AVR 3 heads question<BR>To: "Quad List"
<quadlist@quadvideotapegroup.com><BR>Date: Tuesday, August 2,
2011, 8:35 AM<BR><BR>
<DIV id=yiv1220734295>
<DIV>Lee,</DIV>
<DIV>This could be a rotary transformer problem on the head.</DIV>
<DIV> </DIV>
<DIV>Tony</DIV>
<BLOCKQUOTE
style="BORDER-LEFT: rgb(0,0,0) 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: rgb(228,228,228)"><B>From:</B>
<A title=http://mc/compose?to=Chill315@aol.com
href="mip://074e78d8/mc/compose?to=Chill315@aol.com" rel=nofollow
target=_blank
ymailto="mailto:Chill315@aol.com">Chill315@aol.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=http://mc/compose?to=quadlist@quadvideotapegroup.com
href="mip://074e78d8/mc/compose?to=quadlist@quadvideotapegroup.com"
rel=nofollow target=_blank
ymailto="mailto:quadlist@quadvideotapegroup.com">quadlist@quadvideotapegroup.com</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, August 01, 2011
3:13 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [QuadList] AVR 3
heads question</DIV>
<DIV><BR></DIV><FONT id=yiv1220734295role_document color=#000000
size=2 face=Arial>
<DIV>Lee</DIV>
<DIV> </DIV>
<DIV>What does the Demod out look like?</DIV>
<DIV> </DIV>
<DIV>Chris Hill</DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 8/1/2011 5:12:28 P.M. Eastern Daylight
Time, <A title=http://mc/compose?to=lasvegastvengineer@yahoo.com
href="mip://074e78d8/mc/compose?to=lasvegastvengineer@yahoo.com"
rel=nofollow target=_blank
ymailto="mailto:lasvegastvengineer@yahoo.com">lasvegastvengineer@yahoo.com</A>
writes:</DIV>
<BLOCKQUOTE
style="BORDER-LEFT: blue 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><FONT
style="BACKGROUND-COLOR: transparent" color=#000000 size=2
face=Arial>
<TABLE border=0 cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD vAlign=top>
<DIV>Hello Larry, </DIV>
<DIV> </DIV>
<DIV>Sorry but not the problem, </DIV>
<DIV> </DIV>
<DIV>The closest thing I can describe the effect is white
streaks with analog snow in them trailing out like a comet
tail from the trailing edge of anything white in the
picture. </DIV>
<DIV> </DIV>
<DIV>No digital blocks, Not a head clog. <BR></DIV>
<DIV>Thanks. </DIV>
<DIV> </DIV>
<DIV>Lee </DIV>
<DIV> </DIV>
<DIV><BR>--- On <B>Sun, 7/31/11, LARRY
<I><leodham@centurylink.net></I></B>
wrote:<BR></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From:
LARRY <leodham@centurylink.net><BR>Subject: Re:
[QuadList] <SPAN>AVR</SPAN> 3 heads question<BR>To:
"Quad List"
<quadlist@quadvideotapegroup.com><BR>Date: Sunday,
July 31, 2011, 6:58 AM<BR><BR>
<DIV id=yiv1220734295>
<STYLE type=text/css>#yiv1220734295 P {
MARGIN: 0px
}
</STYLE>
<DIV
style="FONT-FAMILY: Verdana; COLOR: rgb(0,51,255); FONT-SIZE: 18pt">
<DIV>Hello Lee,</DIV>
<DIV> </DIV>
<DIV>I have been following some of the back-and-fourth
e-mails on your tape playback trouble.</DIV>
<DIV>Here is my two cents worth:</DIV>
<DIV> </DIV>
<DIV> I have experienced this problem before.</DIV>
<DIV>The video is tearing in what looks to be square
blocks? right??</DIV>
<DIV>I have encountered that very same effect here on a
VR-1200b. It was caused here by the playback
equalization. A good way to verify if this is the
problem is to go to manual equalization, and turn
down(reduce) the EQ one channel at a time. If you see an
improvement, then stop the machine, unthread the tape,
and look with a magnifier at the drum surface behind
each head tip(trailing surface). You may find a small
build-up of black-looking stuff behind one, or all, of
the head tips on the drum edge surface itself.
</DIV>
<DIV>This build-up increases the diameter of the head
drum just enough to decrease tip penetration at the
head.</DIV>
<DIV>Usual cleaning of the tips will not remove this
buildup. Alcohol and a fingernail will.
CAREFULLY!!</DIV>
<DIV> </DIV>
<DIV> OK, hope this helps,</DIV>
<DIV>larry<BR>----- Original Message -----<BR>From: "lee
williams" <lasvegastvengineer@yahoo.com><BR>To:
"Quad List"
<quadlist@quadvideotapegroup.com><BR>Sent: Sunday,
July 31, 2011 12:24:33 AM<BR>Subject: Re: [QuadList] AVR
3 heads question<BR><BR></DIV>
<TABLE border=0 cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD vAlign=top>
<DIV>Hello, </DIV>
<DIV>Answers below questions. </DIV>
<DIV> </DIV>
<DIV><BR><BR>--- On <B>Sat, 7/30/11,
Chill315@aol.com
<I><Chill315@aol.com></I></B>
wrote:<BR></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From:
Chill315@aol.com
<Chill315@aol.com><BR>Subject: Re:
[QuadList] AVR 3 heads question<BR>To:
quadlist@quadvideotapegroup.com<BR>Date:
Saturday, July 30, 2011, 9:38 AM<BR><BR>
<DIV id=yiv1220734295><FONT
id=yiv1220734295role_document color=#000000
size=2 face=Arial>
<DIV>Lee</DIV>
<DIV> </DIV>
<DIV>How does the RF envelope look on the
scope?</DIV>
<DIV>No Scope - I can tell I have plenty of RF
with my tracking adjustment. </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>How is Vertical lining up with house?</DIV>
<DIV>AVR3 is on internal generator. No
difference if I hook up a black source to the
machines. </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Do you have an alignment tape? If so,
how does it play and where is the tracking
knob?</DIV>
<DIV>Alignment and known good tapes play fine.
</DIV>
<DIV>Client has several thousand tapes made in
the early 80's (probably on a VR2000) </DIV>
<DIV> </DIV>
<DIV>Are you using manual or auto
tracking?</DIV>
<DIV>Manual normally. No difference in
auto. </DIV>
<DIV> </DIV>
<DIV>30 lines of black may be that you are one
or two head passes off in the vertical
realm. The tearing may be due to the fact
that you can not get the head centered on the
track perfectly. </DIV>
<DIV> </DIV>
<DIV>The head assemblies are made so good that
they meet SMPTE specifications with in a few
hairs. This is to create
interchangeability between machines.
</DIV>
<DIV> </DIV>
<DIV>I would not touch the heads in any way as
you will destroy the interchange. It is a
critical factor. If you saw the recent
slide show on here, you see the great deal of
care taken to make a head.</DIV>
<DIV> </DIV>
<DIV>Now the tape you have may have been done in
a non standard method. That is why all the
questions. </DIV>
<DIV> </DIV>
<DIV>I always assume that the tape was poorly
made. Many operations did not do best
practices and thus there is a lot of poorly made
tapes. </DIV>
<DIV> </DIV>
<DIV>I know it's the tape that is off. (several
thousand of them) </DIV>
<DIV>Now how do I get them transferred short of
sending in the weak head to the rebuilder and
have him duplicate the deviation were the head
is off of true? </DIV>
<DIV> </DIV>
<DIV>Chris Hill</DIV>
<DIV>WA8<SPAN>IGN</SPAN></DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 7/30/2011 11:56:38 A.M.
Eastern Daylight Time,
lasvegastvengineer@yahoo.com writes:</DIV>
<BLOCKQUOTE
style="BORDER-LEFT: blue 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><FONT
style="BACKGROUND-COLOR: transparent"
color=#000000 size=2 face=Arial>
<TABLE border=0 cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD vAlign=top><BR>Hay all, <BR>Have a good one
here ??? <BR><BR>AVR3 Mark XV heads.
<BR><BR>Have some 2" tape that when you try to
pull it through the machine will will give you
something that looks like video tearing in the
whites and slow horizontal jitter. <BR><BR>If I
slam the tracking all the way down, I get a very
clean picture, but about 30 lines of black
overhead on the screen. <BR><BR>I see this on
all my new(er) heads I get from both Aheadtek
and VideoMagnetics. <BR><BR>I have 1 very warn
out head (supplier unknown) that will lock to
these tapes<BR><BR>Has anybody seen this before
and is there a way this heads set up can be
duplicated? <BR><BR>Thanks <BR><BR>Lee
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