Correction: Fuse should be F904,(not R904)and was a 1.5A (1500ma)GMA. Phil Phil Bader wrote: >Thanks to Al's pdf files, i located an open fuse on the PS module. R904, >1.5 amp GMA. I tested all around this fuse circuit,Q902 regulator it >feeds,etc. All good. >This was in the +127 VDC source to connector GB pin 3. It goes on the >the HOT/fly ckt. Seems just material fatigue. I used a 1.8 amp. Also the >convergence module needed all the transistors resoldered (tapping on >this caused the convergence to go crazey). >I resoldered a lot of the deflection board. >Nicotine was thick on all the optics. Inside of screen was brown. Lots >of cleaning. >Actually looks 100% better than it could have for years. >Thanks. >Phil Bader > >al m wrote: > > > >>Phil there is a fuse F701 going to Pin 9.you are checking the high voltage >>drive circuit. Will send scan >>Al Marquardt >>ampm@xxxxxxx >>Al Marquardt Electronic Repair >>206 W Main >>Girardville Pa. 17935 >>----- Original Message ----- >>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx> >>To: <techassist@xxxxxxxxxxxxx> >>Sent: Wednesday, April 07, 2004 12:47 PM >>Subject: [TechAssist] Re: RCA Colortrak projo model PPR475T (chassis?) >>sound, no pix >> >> >> >> >> >> >>>I can power it on with sound, recieves cable, stereo led indicates >>>stereo signal. No HV. >>>A few checks: >>>H. driver transistor Q703 has +124 VDC collector. >>>HOT (?) Q704 no B+ at collector. Is NOT shorted, has diode action with >>>meter. >>>Large cap C904 has +122VDC. >>>Flyback pin 9 "B+" has no voltage on it. >>>Connector GB pin 3 has zero volts. (seems to be a B+ piont) >>>BTW this seems the same as the PPP400 and PPR500 models. All Hitachi >>>VP6X chassis. >>>Any notes ? >>>Thanks, >>>All for now. >>>Phil Bader >>> >>>al m wrote: >>> >>> >>> >>> >>> >>>>Phil I've got a VP6X manual on paper. What do you need? >>>>Al Marquardt >>>>ampm@xxxxxxx >>>>Al Marquardt Electronic Repair >>>>206 W Main >>>>Girardville Pa. 17935 >>>>----- Original Message ----- >>>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx> >>>>To: <techassist@xxxxxxxxxxxxx> >>>>Sent: Wednesday, April 07, 2004 12:17 PM >>>>Subject: [TechAssist] Re: RCA Colortrak projo model PPR475T (chassis?) >>>>sound, no pix >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>>>Internally, it has a ID tag: >>>>>Hitachi VP6X chassis. >>>>>Phil Bader >>>>> >>>>>Phil Bader wrote: >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>>>This has got to be 15+ yrs old.Wood cabinet. "ColorTrak". >>>>>>Any one old enough to have histories on this one? >>>>>>;-) >>>>>>Phil Bader >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>-- >>>>> >>>>>Philip Bader >>>>>Jan Phyl TV Inc. (estab. 1976) >>>>>3420 Recker Hwy. Winter Haven, Fl. 33880 >>>>>Fax (863) 299-8821 >>>>>email: tjanphyl@xxxxxxxxxxxxxxx >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>-------------------------------------------------------------------------- >>>> >>>> >>>> >>>> >>>>> >>>>> >>>>> >>>>> >>>>--- >>>> >>>> >>>> >>>> >>>> >>>> >>>>>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/ >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>-- >>> >>>Philip Bader >>>Jan Phyl TV Inc. (estab. 1976) >>>3420 Recker Hwy. Winter Haven, Fl. 33880 >>>Fax (863) 299-8821 >>>email: tjanphyl@xxxxxxxxxxxxxxx >>> >>> >>> >>>-------------------------------------------------------------------------- >>> >>> >>> >>> >>--- >> >> >> >> >>>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/ >> >> >> >> >> > > > -- Philip Bader Jan Phyl TV Inc. (estab. 1976) 3420 Recker Hwy. Winter Haven, Fl. 33880 Fax (863) 299-8821 email: tjanphyl@xxxxxxxxxxxxxxx ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/