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Old 01-23-2010, 12:09 AM
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bandersen bandersen is offline
RCA 741PCS
 
Join Date: Mar 2009
Location: Chicago, IL
Posts: 8,821
Just about done

I've finish restoring the lower power supply + audio amp chassis. Here it is with an unrestored chassis from another set in the background.
I removed the rust from the chassis, choke and audio xfrmrs and buffed them with a non-metallic pad and WD-40. I stripped the power transformer shell and repainted it with black enamel paint. The electrolytics were restuffed and the caps below replaced. A couple out of spec resistors were replaced too.


I'm just about done recapping and replacing out of spec resistors in the top chassis too. Only a few old replacements I left in place because they tested OK.


Here's the new power resistor in the HV cage. It's a little shorter than the original so I used a wooden spacer.


Only one issue remains.
If I tune for the best picture, the audio is very weak. If I tune for the best sound, I have a lousy picture.
I haven't touched the RF/IF states yet. Maybe it's just a weak tube or a bias resistor is off ?

Otherwise, it's playing just fine. BTW Those earlier pictures look sharper because they were still frames - this is live motion.
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Last edited by bandersen; 01-23-2010 at 01:19 AM.
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