Quote:
Originally Posted by bandersen
Yes, I always replace the selenium rectifiers with 1N4007 didoes. I then check the B+ and add a dropping resistor if it's too high.
I also like to replace the series filament dropping resistor with a diode or capacitor when possible.
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i was wondering about that being half wave rec. with the resistance the early ones have ,the full wave ones are touchy when they get older and if there mountings loosen or become rusty they will cook them selves slowly building resistance internaly ,i build large 100amp or more bulk charger's when you use modern rectifiers it makes the older transformers so much better ,i have a picture of the last selenium rect i replaced, or removed to build my own type of bulk charger, all i really wanted was the step transformer out of the old unit. this is a 100amp prob. more but i cant id it i just wanted the trans. probley changing that rect. in that tv to a modern diode makes it alot better less distortion in the d.c. doesnt it .thanks