<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Hi Mike,</span></div><div><span> Before you go to too much trouble let's trouble shoot a little. When you finally get a trace is it centered with the vertical and horizontal position controls near center. Since you said the high value resistors are very high, I suspect that the trace is off scale when cold. As the resistors warm up (carbon resistors decrease in resistance as they warm) the trace then drifts into view. Replace the high value resistors in the position and focus circuits before you do much more and see what happend.<br></span></div><div> 73 Jim<br></div><div>James C. Owen, III K4CGY<br></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font face="Arial" size="2"><hr
size="1"><b><span style="font-weight: bold;">From:</span></b> K5MLC (Mike) <k5mlc@sbcglobal.net><br><b><span style="font-weight: bold;">To:</span></b> "mdilli@nnwifi.com" <mdilli@nnwifi.com><br><b><span style="font-weight: bold;">Cc:</span></b> "heath@puck.nether.net" <heath@puck.nether.net><br><b><span style="font-weight: bold;">Sent:</span></b> Wednesday, July 13, 2011 12:34 PM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [Heath] HO 10 scope question (Update)<br></font><br><div id="yiv1865595083"><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: verdana,helvetica,sans-serif; font-size: 12pt;"><div style=""><span style="">Thanks, Morris. Actually, yes, I remember waiting on the CRT and the other tubes to warm up in the ol<var id="yiv1865595083yui-ie-cursor"></var>d B&W sets! LOL. I'd forgotten about that experience. Age here is 57. Guess it is time to bring out the
old tube testor and start checking all the tubes before I start ordering stuff. Thanks again for the shock to the gray matter ~ reminding me about the "extended" wait time. :) Mike <br style="" class="yiv1865595083yui-cursor"></span></div>
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<div style="border: 1px solid rgb(204, 204, 204); padding: 0px; line-height: 0pt; margin: 5px 0px; height: 0px; font-size: 0px;" class="yiv1865595083hr"></div><b><span style="font-weight: bold;">From:</span></b> Morris <mdilli@nnwifi.com><br><b><span style="font-weight: bold;">To:</span></b> 'K5MLC (Mike)' <k5mlc@sbcglobal.net><br><b><span style="font-weight: bold;">Cc:</span></b> w4gbw@bellsouth.net; cemilton@aol.com; heath@puck.nether.net<br><b><span style="font-weight: bold;">Sent:</span></b> Tuesday, July 12, 2011 5:28 PM<br><b><span style="font-weight: bold;">Subject:</span></b> RE: [Heath] HO 10 scope question (Update)<br></font><br>
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<div><b><span class="yiv1865595083-12072011"><font color="#0000ff">You must be too young to remember waiting on the defective CRT on the old black and white TV to warm up so we could see a picture. Sounds like the CRT is the problem with reduced emission or a cathode short. There was available a special filament voltage booster that sometimes extended the life of the old CRT but it was marginal in value IIRC.</font></span></b></div>
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<div align="left"><font face="Arial" size="2">Morris</font> </div>
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<div dir="ltr" class="yiv1865595083OutlookMessageHeader" align="left" lang="en-us"><font face="Tahoma" size="2">-----Original Message-----<br><b>From:</b> heath-bounces@puck.nether.net [mailto:heath-bounces@puck.nether.net] <b>On Behalf Of </b>K5MLC (Mike)<br><b>Sent:</b> Tuesday, July 12, 2011 10:29 AM<br><b>To:</b> cemilton@aol.com; w4gbw@bellsouth.net; heath@puck.nether.net<br><b>Subject:</b> Re: [Heath] HO 10 scope question (Update)<br><br></font></div>
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<div><span>Hello everyone,</span></div>
<div><span></span> </div>
<div><span>Thanks for all the great ideas! Here is an update on the HO 10 scope project: I opened her up and gave her a good look over, looking for obvious burned stuff, loose stuff, etc. I unplugged the tubes and did a visual on those, and returned them to their sockets. I measured the caps and resistors and found nothing "way out," although several of the hv resistors are higher in value and are on the "replace" list. I found nothing obviously damaged, so I plugged her in and switched her on, again watching for anything unusual. The tubes lit up. I waited, but no trace on the CRT. I decided to let her remain</span><span> on and "cook" a while ~ after 10-15 minutes - finally, here came a trace! I have repeated this scenario several times, and I have even put her in the "loop" and monitored my signal FB. </span></div>
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<div><span>So, any ideas about what to replace to eliminate the "wait" time? All the tubes are reasonably priced except the 6C10! That one is pricey! (On, and BTW, I do have the assembly manual and schematic.) </span></div>
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<div><span>Thanks for everyones assistance. </span></div>
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<div><span>Mike</span></div>
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<div><span>Chuck, Hayseed has a recap kit listed for an HR 10, but not the HO 10. But it looks like they would assemble one for me if I requested it. Thanks for the info. <var id="yiv1865595083yui-ie-cursor"></var></span></div>
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<div style="border: 1px solid rgb(204, 204, 204); padding: 0px; line-height: 0pt; margin: 5px 0px; height: 0px; font-size: 0px;" class="yiv1865595083hr"></div><b><span style="font-weight: bold;">From:</span></b> "cemilton@aol.com" <cemilton@aol.com><br><b><span style="font-weight: bold;">To:</span></b> w4gbw@bellsouth.net; k5mlc@sbcglobal.net; heath@puck.nether.net<br><b><span style="font-weight: bold;">Sent:</span></b> Tuesday, July 5, 2011 6:56 PM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [Heath] HO 10 scope question<br></font><br>
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<div><font face="Times New Roman, Times, serif"></font>Try <a rel="nofollow" target="_blank" href="http://www.hayseedhamfest.com/">www.hayseedhamfest.com</a> They have a complete re-build kit for the scope. </div>
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<div>73</div>
<div>Chuck</div>
<div>W4MIL<br><br></div>
<div style="clear: both;">Remember, the government cannot give anything to anyone that they have<br>not first taken away from someone else.<br></div><br><br>
<div style="font-family: arial,helvetica; color: black; font-size: 10pt;">-----Original Message-----<br>From: Charles W. Morehouse <w4gbw@bellsouth.net><br>To: K5MLC (Mike) <k5mlc@sbcglobal.net>; Heathkit <heath@puck.nether.net><br>Sent: Tue, Jul 5, 2011 7:44 pm<br>Subject: Re: [Heath] HO 10 scope question<br><br>
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<div><font face="Arial" size="2">Hi Mike,</font></div>
<div><font face="Arial" size="2">Yes, have restored a couple of them and others with the same circuit. Replace the HIV caps and all the resistors in the HV circuit.</font></div>
<div><font face="Arial" size="2">The electrolytics are unobtanium, but I cut off the base with a Dremmel tool and install new caps inside. Epoxy the can together.</font></div>
<div><font face="Arial" size="2">Works great and keeps the look original. Suspect the 1V2. Makes a great scope to monitor your stereo. Good luck.</font></div>
<div><font face="Arial" size="2">Wayne,</font></div>
<div><font face="Arial" size="2">W4GBW</font></div>
<div><font face="Arial" size="2"></font> </div>
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<div>"Madam, we have given you a republic, if you can keep it." Ben Franklin</div>
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<div style="font: 10pt arial;">----- Original Message ----- </div>
<div style="font: 10pt arial; background: none repeat scroll 0% 0% rgb(228, 228, 228);"><b>From:</b> <a rel="nofollow" title="k5mlc@sbcglobal.net" ymailto="mailto:k5mlc@sbcglobal.net" target="_blank" href="mailto:k5mlc@sbcglobal.net">K5MLC (Mike)</a> </div>
<div style="font: 10pt arial;"><b>To:</b> <a rel="nofollow" title="heath@puck.nether.net" ymailto="mailto:heath@puck.nether.net" target="_blank" href="mailto:heath@puck.nether.net">Heathkit</a> </div>
<div style="font: 10pt arial;"><b>Sent:</b> Tuesday, July 05, 2011 4:14 PM</div>
<div style="font: 10pt arial;"><b>Subject:</b> [Heath] HO 10 scope question</div>
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<div id="yiv1865595083yui_3_2_0_4_130989628119437">Hello,</div>
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<div>After sitting unused for a while, my HO10 monitor scope appears to be dead. It was working FB before being shelved. As far as I know, it has never been recapped. Should I start there? Anyone have any other ideas/<var id="yiv1865595083yui-ie-cursor"></var>suggestions?? </div>
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<div>Thanks in advance.</div>
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<div>Mike K5MLC</div></div></div></div>
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