WCF720
10-30-2011, 06:13 PM
Greetings! My roundie lives on!
Yesterday, after an a couple months of careful work, gradual voltage, and crossed fingers, the CTC-11 ran producing a pretty decent picture! Months of work consisted of; replacement of all maroon-drops, orange drops, one bumble-bee, about 10 ‘out of tolerance’ resistors in the IF and sound circuits, used a forstner bit to drill out and re-stuff the electrolytics (that's some rude gunk), and about 5000 q-tips to detail clean the circuit boards and chassis – it lives. The CRT appears to have been re-built sometime in its life, but the rare-earth phosphor remains and without any work produces a respectable picture. Upon first application of power, it ran for about a minute and the dim picture faded to nothing. After replacing a “good” 12BY7 (video) I saw a stable and much brighter picture.
Still some homework to do before any time get’s logged: learning to adjust cathode current, HV, and all the usual purity & convergence crap! Thanks to all those who‘ve advised me along the way! Bill
172047
172048
172049
Yesterday, after an a couple months of careful work, gradual voltage, and crossed fingers, the CTC-11 ran producing a pretty decent picture! Months of work consisted of; replacement of all maroon-drops, orange drops, one bumble-bee, about 10 ‘out of tolerance’ resistors in the IF and sound circuits, used a forstner bit to drill out and re-stuff the electrolytics (that's some rude gunk), and about 5000 q-tips to detail clean the circuit boards and chassis – it lives. The CRT appears to have been re-built sometime in its life, but the rare-earth phosphor remains and without any work produces a respectable picture. Upon first application of power, it ran for about a minute and the dim picture faded to nothing. After replacing a “good” 12BY7 (video) I saw a stable and much brighter picture.
Still some homework to do before any time get’s logged: learning to adjust cathode current, HV, and all the usual purity & convergence crap! Thanks to all those who‘ve advised me along the way! Bill
172047
172048
172049