Quote:
Originally Posted by zeno
A screen shot would be nice but... just because a tube checks good
it dont mean its good. The worms make me think an IF tube.
AGC usually messes up the sound if overloading or washes out the pix.
Dont forget the lost art of tapping. Light tapping of tubes often
show a bad tube or dirty socket. Give light taps one tube at a time
while watching the pix in a mirror.
73 Zeno  |
Very true on all statements and methods. These resurrections or restoration projects are unique as we are often working with something with years of use in a smokey room and then dormancy by the decade. With that being said, we don't really need the laboratory equipment that only some of us may own. You need these rudimentary, common sense skills like tapping tubes. cleaning their pins and sockets, and feeling capacitors to see if they are getting hot.
I just talked to the guy who gave me this Zenith yesterday and he told me that he got it in 1997 and that it had been in a basement before that since the late 70s. I feel that I am lucky to have gotten the set to where it is right now. I must look at all that is functioning which is most everything. Just the few issues that I am mentioning isn't that bad in the grand scheme of things. Also, I have seen the set play almost perfectly a time or two, but it's momentary. I am crippled by lack of space to move the thing around a lot or pull the chassis. At least it has that nice access panel on the bottom that gets me to much but not all of the components.
You mentioned IF tubes. I have tested and swapped all the video IFs. No change. Like I have mentioned, I need a screen shot......