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  #16  
Old 03-07-2017, 08:45 PM
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bigaudioal bigaudioal is offline
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Quote:
Originally Posted by bandersen View Post
Hmm. I think you'd find the 1077 easier to use and has a lot more features. The 1075 is pretty ancient.
The 1075 was

F R E E

It is in great shape too. Gotta start somewhere. Unless someone wants to donate a 1076 or 1077 to Big Al's charity??
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  #17  
Old 03-07-2017, 08:48 PM
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Kamakiri Kamakiri is offline
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I'd have to blow the dust off of my 1077. Used it all of once....to make sure it worked

Of course the moment I need it......
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  #18  
Old 03-07-2017, 08:57 PM
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Originally Posted by Kamakiri View Post
I'd have to blow the dust off of my 1077. Used it all of once....to make sure it worked

Of course the moment I need it......
That's b/c for some strange reason your sets never seem to have signal issues. You get hot plating HOTs!!!
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  #19  
Old 03-07-2017, 08:58 PM
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Yeah, I got a hat trick of those....one down two to go.
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  #20  
Old 03-08-2017, 12:19 AM
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Kevin Kuehn Kevin Kuehn is offline
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There's a fellow over on ARF that swears by his 1075. I think as long as it's serviced and up to spec it will do well. But do yourself a favor and test it out on a more modern CRT TV first.
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  #21  
Old 03-09-2017, 04:49 PM
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Polaraligned Polaraligned is offline
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We used a 1075 in the TV shop I worked in in the early 80's. It was a good piece of equipment and never let us down.
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  #22  
Old 03-11-2017, 11:16 PM
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I had an 1076 that I had back in '88 that used to belong to where I was working at the time, sadly it no longer exists.
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  #23  
Old 03-13-2017, 11:25 PM
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Replacing the interstage micas is a no no unless you want to do a full IF realignment. I have restored a number of RCA sets from 46 thru 52 (before RCA succumbed to cost cutting) and have never found a bad interstage mica.

The realignment is more complicated on these sets and you'll need a good sweep generator and accurate marker to do it right. Split sound sets like the 630 require the job to be done right because of the audio video tracking when tuning. Split sound sets are tuned for best sound and not picture.

When aligned correctly the picture quality is the best on RCA sets. No expense was spared. But patience and perseverance will now be required to bring the alignment back.
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  #24  
Old 03-14-2017, 09:44 AM
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An oscilloscope is your friend.

Get one and learn how to use it, and this problem will be solved in 5 minutes or less.
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  #25  
Old 03-14-2017, 08:00 PM
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A sweep generator, a marker generator and of course an oscilloscope. All three are required to properly realign the IF strip.
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  #26  
Old 03-15-2017, 09:34 AM
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Could probably recruit help at ETF......
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  #27  
Old 03-15-2017, 08:15 PM
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Any chance the original mica's were kept so you can revert back to square one?

I think it's unlikely that replacing those inter-stage mica's would completely blow the picture off frequency.
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  #28  
Old 03-15-2017, 10:53 PM
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Do I need to bring my alignment rig to the meet and do some teaching?
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  #29  
Old 03-15-2017, 11:00 PM
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That's a good idea Nick, I'd like to be there for that as well but am stuck in Wisconsin this year.
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  #30  
Old 03-16-2017, 10:41 AM
dieseljeep dieseljeep is offline
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Quote:
Originally Posted by Penthode View Post
Replacing the interstage micas is a no no unless you want to do a full IF realignment. I have restored a number of RCA sets from 46 thru 52 (before RCA succumbed to cost cutting) and have never found a bad interstage mica.

The realignment is more complicated on these sets and you'll need a good sweep generator and accurate marker to do it right. Split sound sets like the 630 require the job to be done right because of the audio video tracking when tuning. Split sound sets are tuned for best sound and not picture.

When aligned correctly the picture quality is the best on RCA sets. No expense was spared. But patience and perseverance will now be required to bring the alignment back.
RCA didn't succumb to cost cutting! It was high time, they incorporated intercarrier audio. Everyone else was using it!
Good old Davey, didn't want to pay Motorola the royalties. He just liked collecting them.
I have to get back to my 621TS, haven't touched it in months!
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