<html><head></head><body bgcolor="#FFFFFF"><div>First thing is check your air supply.</div><div><br></div><div>Is it completely dry? </div><div>Do you have a super filter on it to take out any oil or other contaminants?</div><div><br></div><div>How is your vacuum?</div><div><br></div><div>Next do no play with the screw. It sets the rotary transformer spacing. That can create some interesting things. </div><div><br></div><div>Questions.</div><div><br></div><div>Does this noise continue after tape is stopped with head still spinning?</div><div><br></div><div>Have you used the screwdriver to the ear trick to figure out where in the head the noise is generated?</div><div><br></div><div>await more information.<br><br>Chris Hill</div><div><br>On Feb 8, 2013, at 6:56 PM, lee williams <<a href="mailto:lasvegastvengineer@yahoo.com">lasvegastvengineer@yahoo.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div><span></span><br></div></blockquote><blockquote type="cite"><div><div style="color:#000; background-color:#fff; font-family:lucida console, sans-serif;font-size:14pt"><div><span></span> </div><div><span>Have a new Mark XV head on a <span id="misspell-0" class="mark">AVR</span>3 that has about 100 on it. </span></div><div><span></span> </div><div><span>It starts off quiet, then after about a half hour starts to develop a random <span id="misspell-1"><span>whine as the tape is passing through. </span></span></span></div><div><span><span><span></span></span></span> </div><div><span>I would normally call up the company that rebuilt it, but the last 3 times we have sent something back to them they have not honored there <span id="misspell-1"><span>warranty</span></span>. </span></div><div><span></span> </div><div><span>Does anybody have any experience with working on a Mark XV ? </span></div><div><span></span> </div><div><span>Was wondering what the screw
with the spring that is close to the brushes adjusts? </span></div><div><span></span> </div><div><span>I am really <span id="misspell-3"><span>hesitant</span></span> to do anything because this head is making a really great picture, but I am concerned that the whine is cutting down on the life. </span></div><div><span></span> </div><div><span>Any experience would be <span id="misspell-4"><span>appreciated</span></span>. </span></div><div><span></span> </div><div><span>Thanks </span></div><div><span></span> </div><div><span>Lee </span></div><div><span></span> </div><div><font size="2" face="Arial"> </font></div></div></div></blockquote><blockquote type="cite"><div><span>______________________________________________</span><br><span>Please trim posts to relevant info when replying.</span><br><span></span><br><span>Change subject to reflect thread direction. Thanks.</span><br><span>_______________________________________________</span><br><span></span><br><span>Send QuadList list posts to <a href="mailto:QuadList@quadvideotapegroup.com">QuadList@quadvideotapegroup.com</a></span><br><span>Your subscribe, unsubscribe and digest options are here:</span><br><span><a href="http://mail.quadvideotapegroup.com/mailman/listinfo/quadlist_quadvideotapegroup.com">http://mail.quadvideotapegroup.com/mailman/listinfo/quadlist_quadvideotapegroup.com</a></span></div></blockquote></body></html>