<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Lee,<div><br></div><div>With color bars as input, what is happening E-E? On the vector scope, are the vectors as sharp dots, or are they indeed passing through low-band filtering?</div><div><br></div><div>The fact that the machine appears to be stuck in low band may be pointing to a main bay power supply problems. Check for both voltages and for a hum free scope display. It is possible that one card is dragging down the whole bay, especially logic (which may be why the machine is full time in low band). </div><div><br></div><div><div>
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orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><div><div>Best Regards,</div><div><br></div><div><div><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; 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<br><div><div>On Apr 6, 2011, at 8:48 AM, lee williams wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font: inherit;"><div>Have a interesting problem with one of my AVR 3's. </div>
<div> </div>
<div>I have consistently low RF readings at the tracking meeter and can't get the RF up to normal levels. </div>
<div> </div>
<div> </div>
<div>Here is what I see. </div>
<div> </div>
<div>A known good hi band tape that will display RF between 80-85 in any other machine will only display 10-15. </div>
<div> </div>
<div>Low Band light always on.</div>
<div> </div>
<div>Auto Chroma won't respond on #4 card. </div>
<div> </div>
<div>Looking at the Demod in the wave form monitor, the sync level looks 10 IRE low. </div>
<div> </div>
<div> </div>
<div>Here is what I have tried. (all swap outs are with known working machines) </div>
<div> </div>
<div>Swapped out pre amp behind head. </div>
<div>Changed out MDA (it was bad with other issues) </div>
<div>Swapped out every card in the lower frames. </div>
<div>Changed out power supply frame. (it had cap problems with other issues) </div>
<div> </div>
<div> </div>
<div>This one has me good. </div>
<div>Nothing visible as far as the wiring harness. </div>
<div>I am kind of running out of things to swap/look at. </div>
<div> </div>
<div>Has anybody else ever experienced this one? </div>
<div> </div>
<div>Also, </div>
<div>Were will the get together be at NAB? </div>
<div>Plan on being there for Monday and Tuesday. </div>
<div> </div>
<div>Thanks </div>
<div>Lee </div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
<div><br> </div></td></tr></tbody></table>_______________________________________________<br>Please trim posts to relevant info when replying!<br>Send QuadList list posts to <a href="mailto:QuadList@quadvideotapegroup.com">QuadList@quadvideotapegroup.com</a><br>Your subscribe, unsubscribe and digest options are here:<br><a href="http://mail.quadvideotapegroup.com/mailman/listinfo/quadlist_quadvideotapegroup.com">http://mail.quadvideotapegroup.com/mailman/listinfo/quadlist_quadvideotapegroup.com</a></blockquote></div><br></div></body></html>