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<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Chris:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks for the insight…especially about the reel
motors. I’m not sure it is the solenoid…but it sounds like
that is what is buzzing…replacing the solenoid seems pretty
straight-forward, if that is what it is. It is the solenoid that appears to
actuate the reel brakes.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regarding being in HB or LB, we did look at that switch.
In fact, we played a low band tape and noticed that putting the switch into low
band improved the images (made it brighter and it appeared sharper…but
that could be imagined because it was brighter). We were definitely in HB
when attempting to play the color tape.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I like the idea about the scope and testing the signal…will
try that later.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks;<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>John Walko<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
quadlist-bounces@quadvideotapegroup.com [mailto:quadlist-bounces@quadvideotapegroup.com]
<b>On Behalf Of </b>Chill315@aol.com<br>
<b>Sent:</b> Tuesday, September 08, 2009 12:37 PM<br>
<b>To:</b> quadlist@quadvideotapegroup.com<br>
<b>Subject:</b> Re: [QuadList] Rebuilding RCA TR-600s<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>A couple of notes as to what to look for to solve your
issues. I have not worked on this machine but the symptoms are universal.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>The following is all speculation and conjecture. Do not take
it for gospel. All legal statements etc. according to my Marx Brother
Lawyers.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>First, the seeing of two syncs and bursts. This is due to
the timing difference between the machine and the house sync that you are
using. The house sync is being inserted back in according to what you
said earlier. All that needs to solve this is to find out how to get
the H phase to align with the house sync. If you are in Regen mode,
this will disappear. <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>The issue with the color bars changing color in the regen mode
tells me that the machine is not gen-locking to the incoming black burst in
that mode. A way to tell this is to trigger your scope from the outside
house burst and look at the output of the machine. If the two signals are
moving, then you are not locked. <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>You should do this to get the machine to be in time with the
external black. Show house burst on one channel of the scope and the
output on the other. Then triggering off the house, get the two signals
to line up.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Reel tensions have to be done quickly. Do not remove the
reel motors as there is a possibility of issues. The reel turntable
heights are set to SMPTE standards and not knowing how RCA did it you may have
a minor issue. Ampex did it by putting shims under each bolt for the reel
motor. These are very specific to each one so if you change, then it
requires a way to get the height back to normal. Possibly you could set
up a measurement system to note the height of the table above the deck at all
four bolt holes and then replicate the numbers when the motor is
replaced. I have never had a motor go bad in over 20 years. The
only time that I had to remove a motor was when someone slammed a reel on and
broke the pin that holds the turntable to the shaft. I was lucky that the
Ampex person that built the deck had marked the shim sizes on the back of the
deck.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>The issue of the black and white tape looking good and then the
color tape going bad is interesting. I do not know if the machine plays
all three standards. If so was the switch in the correct position?
Or does it auto switch like the TR-70? If the latter, then look at that
circuitry. The auto EQ does not have a burst in low band black and white
so is shut off. Manual adjustment is required and it is sometimes not
that easy to see the banding in black and white. Play back color bars and
see if the auto EQ is working. If not, do the manual adjustments to get
the picture looking right. Then try the auto. It may be so far out that
it can not adjust.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>The long lock up would also be an indication of the fact that the
machine may be in the wrong standard.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Hope that helps.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Chris Hill<o:p></o:p></span></p>
</div>
<div id=a28540fb3dac46b44e3ce4d766a938c2>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<div class=MsoNormal align=center style='margin-top:7.5pt;text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>
<hr size=2 width="100%" align=center>
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<p class=MsoNormal style='margin-top:7.5pt'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'><br>
<br>
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 4407 (20090908) __________<br>
<br>
The message was checked by ESET NOD32 Antivirus.<br>
<br>
<a href="http://www.eset.com">http://www.eset.com</a><o:p></o:p></span></p>
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