|
Replaced the burned resistors on the tuner today. Couldn't find any particular cause though - guess they just got tired.
Then I almost got into trouble trying to align the color oscillator drivers to see if I could get the tint control centered better. At one point I stuck the tool into the bandpass transforner by mistake and really messed up the tint. Then trying to follow the instructions, I found that the so called "touch up" of the drive transformers actually could move the tint by 90 degrees, that is, tuning for the peak demod current according to the instructions, (R-Y) was coming out of the (B-Y) demod, and minus (B-Y) out of the R-Y demodulator. Anyway, after wasting an hour, it's now back to normal tint. I probably should be doing a complete IF and color bandpass alignment, but I'm going to move on to more basic things like hooking up the HV and CRT dag grounds and installing the chassis. Then I'll see if I basically have a picture and sync instead of just scope traces.
|