I actually had done a coolant change on this set a little over a year ago. I'll have to ask them if they left it on the blue " no signal " screen for an extended period ================================= Jeff Stielau Shoreline Electronics Repair 344 East Main Street Clinton,CT 06413 (860)399-1861 (860)664-3535 FAX jstielau@xxxxxxxx ================================= ----- Original Message ----- From: "Leonard G. Caillouet" <lcaillo@xxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Friday, February 27, 2004 11:35 AM Subject: [TechAssist] Re: Cracked Blue NAP CRTs > I wonder if it has something to do with differential heating due to the > coolant contaminants. Dark absorbs heat... > > Leonard G. Caillouet > Electronics World > Gainesville, FL > 352-332-5608 > 352-332-5668 (fax) > > ----- Original Message ----- > From: "Terry H." <tvdoc@xxxxxxxxxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Sent: Friday, February 27, 2004 11:04 AM > Subject: [TechAssist] Re: Cracked Blue NAP CRTs > > > > According to NAP eng., if a blue screen is left on for a long period of > > time, 20minutes or more, the blue tubes have been know to overheat and > > crack. Another reason I've read, is overtightening of the lens also causes > > this. Don't know which if any is true but, these are Hitachi tubes and > it's > > not a known fail on those models. > > The TV Shop > > Gonzales, Tx > > > > ----- Original Message ----- > > From: "tony saracco" <tcselectronics@xxxxxxxxx> > > To: <techassist@xxxxxxxxxxxxx> > > Sent: Friday, February 27, 2004 9:26 AM > > Subject: [TechAssist] Re: Cracked Blue NAP CRTs > > > > > > > Just a thought but if its heat then why not other manufactures tubes > doing > > > the same, could it be just a bad run of blue tubes from NAP. > > > > > > Tony Saracco > > > TCS ELECTRONICS > > > 406 Andra Ct. > > > Gilberts, IL 60136 > > > tcselectronics@xxxxxxxxx > > > > > > ----- Original Message ----- > > > From: "Hoyt's TV" <hoytstv@xxxxxxxxxxx> > > > To: <techassist@xxxxxxxxxxxxx> > > > Sent: Friday, February 27, 2004 7:38 AM > > > Subject: [TechAssist] Re: Cracked Blue NAP CRTs > > > > > > > > > Let's see if this gets through. > > > About half of my replies/posts have been coming back to me this week. > > > Got some more this morning. > > > Here goes, anyway. > > > > > > Why should the blue tube get nailed? > > > Since white is made up of 53% green, 36% red and 11% blue and I would > > expect > > > a constantly changing color picture would average about the same unless > > they > > > are leaving it on something with a blue screen most of the time. > > > Should be the green tube that heats up the most. > > > > > > Russ Hoyt > > > Hoyt's TV > > > Exeter, NH > > > > > > > > > ----- Original Message ----- > > > From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx> > > > To: <techassist@xxxxxxxxxxxxx> > > > Sent: Thursday, February 26, 2004 11:46 PM > > > Subject: [TechAssist] Re: Cracked Blue NAP CRTs > > > > > > > > > > Because they get hotter than the other two, resulting in premature > > > failure. > > > > Perhaps they should make the chamber larger or come up with some > method > > of > > > dissipating the heat. > > > > > > > > Jeff Dougherty > > > > Intrepid Video TV/VCR > > > > 263 S Front St > > > > Steelton PA 17113 > > > > fax...717-564-4952 > > > > www.intrepid-video.com www.tech-repair.net > > > > > > > > ----- Original Message ----- > > > > From: "Shoreline Electronics" <jstielau@xxxxxxxx> > > > > To: "Tech Assist Group" <techassist@xxxxxxxxxxxxx> > > > > Sent: Thursday, February 26, 2004 10:41 PM > > > > Subject: [TechAssist] Cracked Blue NAP CRTs > > > > > > > > > > > > Ok....why do these projo tubes crack! Just the blue but NIT the green > > or > > > > red! > > > > > > > > > > > > Anyone? > > > > > > > > ========================== > > > > Jeff Stielau > > > > Shoreline Electronics Repair > > > > 344 East Main Street > > > > Clinton,CT 06413 > > > > 860-399-1861 > > > > 860-664-3535 (fax) > > > > jstielau@xxxxxxxx > > > > ======================== > > > > "If you push something hard enough it will fall over." > > > > Fudd's First Law of Opposition - Sir Sidney Fudd > > > > > > > > > > > > > > > > > > > -------------------------------------------------------------------------- > > > --- > > > > Lost Password: > > > > http://www.tech-assist.org and select "Login Problems?". > > > > Email Archives: > > > > //www.freelists.org/archives/techassist/ > > > > > > > > > > > > > > > > > > > > > > > -------------------------------------------------------------------------- > > > --- > > > > Lost Password: > > > > http://www.tech-assist.org and select "Login Problems?". > > > > Email Archives: > > > > //www.freelists.org/archives/techassist/ > > > > > > > > > > > > > > > > > -------------------------------------------------------------------------- > > -- > > > - > > > Lost Password: > > > http://www.tech-assist.org and select "Login Problems?". > > > Email Archives: > > > //www.freelists.org/archives/techassist/ > > > > > > > > > > > > > -------------------------------------------------------------------------- > > --- > > > Lost Password: > > > http://www.tech-assist.org and select "Login Problems?". > > > Email Archives: > > > //www.freelists.org/archives/techassist/ > > > > > > [Scanned by AwesomeNet Anti-Virus] > > > > > > > > > [Scanned by AwesomeNet Anti-Virus] > > > > > > > > > > > > [Scanned by AwesomeNet Anti-Virus] > > > > > > -------------------------------------------------------------------------- > --- > > Lost Password: > > http://www.tech-assist.org and select "Login Problems?". > > Email Archives: > > //www.freelists.org/archives/techassist/ > > > > -------------------------------------------------------------------------- --- > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". 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