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  #1  
Old 02-25-2011, 10:29 PM
ctc17 ctc17 is offline
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let me make that sound nicer, you need to invest in some of those square chemical fuses if you want to protect the set and dont want the fuse to open from general use

Last edited by ctc17; 02-25-2011 at 10:51 PM.
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  #2  
Old 02-26-2011, 06:39 PM
DaveWM DaveWM is offline
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I wish I had my camera (AWOL) I cleaned up the knobs, reinstalled the chassis, hooked up the audio, did a brief center converge (OTA pics), set the gray scale up, after a few minutes it makes a very nice color pic, excellant flesh tones, deep colors, etc...

Sound is good as well (I had not tested that since I had to disconnect the speakers to get the tuner into the service position.

the CRT is weak but does come up after a few. I am looking forward to pulling the cataract out to see how much nicer it will look.

I am going to give it a rest and tackle the SS power amp, I only had one channel, not sure if it was the amp or the tuner. Have not tried the TT to see if it spins.

I did a real quick rub down with some restrofinish, looks a lot better, not sure if its worth the effort to restore the wood work. I have not done much of that, I may choose a set that is not as cool looking to start off with my wood refinshing skills.

I hope the phono cart is not DOA, they are hard to come by and pretty expensive considering what they are.
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  #3  
Old 02-26-2011, 07:10 PM
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VintagePC VintagePC is offline
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Quote:
Originally Posted by DaveWM View Post
I hope the phono cart is not DOA, they are hard to come by and pretty expensive considering what they are.
Tell me about it... I flew to a different continent to get a replacement ceramic for a crystal cartridge (well, I was there on vacation and took advantage of it... but that explanation doesn't sound anywhere near as impressive...)

Good luck with the resto- I love reading about other people's repair stories.
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Old 02-26-2011, 09:38 PM
DaveWM DaveWM is offline
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well the SS amp was in pretty good shape, used compressed air to blow off the 45 years of dust, yuck...

it had two .0027 paper caps on the input, both leaky, hope they did not fry the transistors. Two small 10uf coupling caps were leaky and had a high ESR, replaced those, there was one 40uf 250v cap that was a bit leaky as well, and a single 500uf 50v cap (think it was a bypass cap for the power transistorss) was leaky. the rest were ok (a couple 500uf 50v on the output and a triple section 250v filter cap for the tube stereo power supply).

anyway will try it out tomorrow, at least can test it by touching the tape input and see if both channels work.

the tube stereo will def need some work, there were paper caps in the MPX board, so at the very least those will have to go. The AM was working but the FM was dead. Did not check anything at all on that, so maybe just a dead osc tube in the FM tuner.
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Old 02-26-2011, 10:28 PM
DaveWM DaveWM is offline
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well of course there was no way I waiting until tomorrow. guess one of the leaking B+ caps may have been the prob with the FM, as it was working fine now and both channels sound nice and clean. the MPX light is working but I did not try to see if there was actual separation in the channels. I wil pull the radio chassis tomorrow and replace those caps and give it a general going over. The face plate is VERY dirty, so I will clean it up when I pull the stereo. I can see some of the silver paint is warn, not sure how to fix that, but maybe on of those paint marker pens may do the trick.

this thing really bumps....
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  #6  
Old 02-27-2011, 12:30 AM
DaveWM DaveWM is offline
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well about out of gas, replaced the two papers (leaky of course, just checked for the heck of it) and 3 eletrolytics, all tested with high esr, could not check two of them for leakage, too low a voltage, like 5 and 15v my tester only goes as low as 25v, but they needed to go anyway.

Cleaned and oiled all the moving parts, scrapped of some mild rust spots that were on the metal face where the dial pointer slides, a little lithum there just to smooth it out, oiled all the pulleys etc... cleaned the pots and switches.

cleaned the white plastic back part of the dial face that obscures the chassis when reading the channels. the chassis was very clean. I just find it hard to understand the usage of those dumb paper caps, I figured they were stopped by the late 50's
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  #7  
Old 02-27-2011, 09:30 AM
DaveWM DaveWM is offline
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more progress today, the stereo tuner faceplate cleaned up very nicely as did the knobs, hot soapy water and an old toothbrush did the trick.

on the plastic there is lettering that stands proud of the backing, RCA, new vista etc... was silver but much of it was worn off. I think If I can find or fabricate a small rubber J roller with the roller made from fairly hard rubber, I could just use it like inking lettering with some silver paint. I dont trust my hands to try and touch up with a brush, and since the lettering stands proud, I am pretty sure it would turn out nice.

Going to clean out the bottom of the cabinet under the tuner today and reinstall, hopefully the stereo will not need any more work as its a bit of a PITA to hook it up to the amp and speakers. Pretty sure it will be fine. I have worked on other RCA tube tuners, they work very well.
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