> > FWIW > > Terry > > > > > > If the 'purple fog/haze' is clear and defined, its probably a convergance > error as Terry describes. If it's a fuzzy ghosting to the right of any > vertical line, it could be the CRT failing or a video board fault. > > Steve Bell
:-) In RCA sets I repair, often I find silver color disc (actually, posistor) rolling around and see pair of L shaped wires sticking up from circuit board near degaussing coil plug. Once in CTC130 chassis, deguassing power B+ is so low due to pair of small dead capacitors (ESR went high) on upright power supply on right side with backend of set towards you. That one was circuitious routing so both schematic and ESR meter was so useful and saved time. CTC130 degauss works this way: the timing of On-time period was set by R-C circuit and two transistors driving a relay on small upright circuit. Every time a set turned on by button or remote, that degauss B+ powers that circuit and this turns relay closing path for posistor, degaussing coil to the 120VAC line on for few seconds till capacitor charges enough voltage and relay loses power (breaking the degaussing circuit) and stays this way long as set is on. Turn off, capacitor discharges quickly resetting that circuit for next degauss cycle. B+ for that is about 30Vdc either from power board or direct from flyback w/ diode and smoothing capacitor. Fractured solder joint can stop degaussing circuit cold. Bring your monitor in and have a tech do manual degauss your monitor to confirm. Cheers, Wizard -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
