|
I worked on many CTC-7s, and I'd recommend for accuracy, to remove the part about testing all tubes. No TV repairman would have done that, as it would have wasted a lot of time. If I had been called out for a shrunken picture, I'd have first measured the household electrical outlet to see if the voltage was low (a common problem at that time). There is a switch on many early color TVs to compensate for a low line voltage, in fact. Next I'd have tried swapping the two 5U4 tubes, and if that didn't fix it, I'd put the originals back, and then troubleshoot the power supply and have then found the bad filter capacitor. This would have involved unbolting the chassis from the cabinet, and sliding it part way out to get at the bottom (or actually the side, as that TV had the chassis mounted upright inside the right-hand side of the cabinet; not on the bottom as most sets were then).
I hope this helps...
Charles
__________________
Collecting & restoring TVs in Los Angeles since age 10
|