06-27-2019, 11:59 PM
A little up date. I wanted sort the replacement IF transformer under the chassis.On the original the resistances seemed ok I thought I'd pull it out for a closer inspection. To do so the three aluminum cans come off as one unit after removing 3 chassis screws and 6 screws that hold the IF trimmers cap in place. All was going well till I got to the last of the 6 screws. It was very tight and though it may have rusted. Small indent in the can and the head of the screw was roughed up a bit. Some one else had been at it before. Didn't give it a lot of thought. Gave it some WD-40 and time to see if that would help loosen this offending little bugger.
I gave it a sharp twist and it started to turn BUT it kept turning and turning but didn't unscrew out. Nutz! Was time break out the Dremel and grind the head off of is blighter! Ground it off to find that the screw still stuck to mating threaded bushing but on twisting it it cracked the ceramic portion of the trimmer in several places. GRRR! Now I had two questionable ift (the 2nd and 3rd).
I'm thinking that what happen was that the grid wire on the 2nd ift was very tattered and was in need of replacement. Someone started the remove the cans and got stuck at that last screw and decided to just add a replacement to he under side rather than trying to get the original apart.
Ed H comes to the rescue as he has some spares and is graciously sending them along to me. So by next week I can get started back working on the IF strip. I should be pulling the shadow meter out and rewind it while I'm waiting...
I gave it a sharp twist and it started to turn BUT it kept turning and turning but didn't unscrew out. Nutz! Was time break out the Dremel and grind the head off of is blighter! Ground it off to find that the screw still stuck to mating threaded bushing but on twisting it it cracked the ceramic portion of the trimmer in several places. GRRR! Now I had two questionable ift (the 2nd and 3rd).
I'm thinking that what happen was that the grid wire on the 2nd ift was very tattered and was in need of replacement. Someone started the remove the cans and got stuck at that last screw and decided to just add a replacement to he under side rather than trying to get the original apart.
Ed H comes to the rescue as he has some spares and is graciously sending them along to me. So by next week I can get started back working on the IF strip. I should be pulling the shadow meter out and rewind it while I'm waiting...
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry