Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Early B&W and Projection TV

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 07-16-2016, 02:37 PM
TUD1's Avatar
TUD1 TUD1 is offline
TheUniversalDave1
 
Join Date: Jan 2014
Location: Birmingham, AL
Posts: 1,611
1951 rca kcs-47

I got this from the Radio club today for $20. It was left in the building when the club moved in 15 years ago, and they had it in the Annex. The Annex consists to two very large rooms filled to the roof with TV and radio stuff. I also got a B&K 445 CRT tester, which I used to test the tube in the set. When I tested the tube in the Annex, it tested 70%. I bring it home, clean all the tubes and tube sockets, and test the tube again. This time, it tested 80%. I leave the tube tester on it for about two minutes, and then walk away. When I come back twenty seconds later, the emissions had fallen to 20%. What gives?! I hope it's just the tube tester acting up. I'd really hate to have to find a new tube for this thing. The cabinet is in exquisite shape, too.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan

Last edited by TUD1; 03-12-2017 at 06:56 PM.
Reply With Quote
  #2  
Old 07-16-2016, 03:38 PM
TUD1's Avatar
TUD1 TUD1 is offline
TheUniversalDave1
 
Join Date: Jan 2014
Location: Birmingham, AL
Posts: 1,611
I briefly turned the set on to verify that the tube had not been destroyed by the B&K 445. It still produces a bright picture. The horizontal is running way too slow, the vertical - very screwed up, and the hum from the lytics has plenty of bass.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan

Last edited by TUD1; 03-12-2017 at 06:56 PM.
Reply With Quote
  #3  
Old 07-16-2016, 03:39 PM
TUD1's Avatar
TUD1 TUD1 is offline
TheUniversalDave1
 
Join Date: Jan 2014
Location: Birmingham, AL
Posts: 1,611
Here is the image.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan

Last edited by TUD1; 03-12-2017 at 06:56 PM.
Reply With Quote
  #4  
Old 07-16-2016, 03:57 PM
jbattles's Avatar
jbattles jbattles is offline
jbattles
 
Join Date: Sep 2012
Location: Ellijay, Ga
Posts: 168
I will go ahead and tell you now. It needs to be recap before you run it more than a minute. Those paper caps is just layers of wax paper and oil and when they blow they have been known to catch fire. Now that would be a good set to learn repairing and restorations on. I am not trying scare you , but I have had happen to me back in the day. I was learning myself and it scared the crap out of me.
Reply With Quote
  #5  
Old 07-16-2016, 04:24 PM
TUD1's Avatar
TUD1 TUD1 is offline
TheUniversalDave1
 
Join Date: Jan 2014
Location: Birmingham, AL
Posts: 1,611
Yes, yes. I know all about old wax caps. No need to preach to me. I only wanted to see if the tube had been ruined by that tester. This thing will be getting all new Sprague orange drops, or at the very least, those yellow polypropylene things. Although, I don't really like those.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan
Reply With Quote
Audiokarma
  #6  
Old 07-16-2016, 05:41 PM
Kamakiri's Avatar
Kamakiri Kamakiri is offline
Administrator
 
Join Date: Jun 2002
Location: Buffalo, New York
Posts: 5,109
Be forewarned....this set is probably one of RCAs worst sets. Even when restored they have lousy focus and picture quality. Most KCS 47 chassis sets are best used for displaying spider plants. Unreliable even when new.

Personally not a fan of those yellow caps....I get mine from mouser, or capacitor world.
__________________
"Restoring a tube TV is like going to war. A color one is like a land war in Asia."
Reply With Quote
  #7  
Old 07-16-2016, 06:27 PM
TUD1's Avatar
TUD1 TUD1 is offline
TheUniversalDave1
 
Join Date: Jan 2014
Location: Birmingham, AL
Posts: 1,611
Thanks for the warning, Kamakiri. The cabinet is in such nice shape (except for the top), I think refurbishing (not restoring) this set would be nice. And please feel free to change this thread's title to "1951 RCA KCS-47" instead of "1951 rca kcs-47." That is driving me crazy.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan
Reply With Quote
  #8  
Old 07-16-2016, 07:10 PM
truetone36's Avatar
truetone36 truetone36 is offline
electronics packrat
 
Join Date: Jan 2006
Location: Trumann, AR.
Posts: 942
This was not the best RCA by a long shot, but if you're up to the challenge it's still a good candidate for restoration.
__________________
Dumont-First with the finest in television.
Reply With Quote
  #9  
Old 07-16-2016, 07:14 PM
jr_tech's Avatar
jr_tech jr_tech is offline
VideoKarma Member
 
Join Date: Sep 2009
Posts: 4,510
Quote:
Originally Posted by Kamakiri View Post
Be forewarned....this set is probably one of RCAs worst sets. Even when restored they have lousy focus and picture quality. Most KCS 47 chassis sets are best used for displaying spider plants. Unreliable even when new.

Personally not a fan of those yellow caps....I get mine from mouser, or capacitor world.
Agreed...RCA made many fine tv sets, sadly the KCS 47 is not one of thier better efforts.

Out of curiosity, what do people dislike about the yellow caps?

jr
Reply With Quote
  #10  
Old 07-16-2016, 07:49 PM
TUD1's Avatar
TUD1 TUD1 is offline
TheUniversalDave1
 
Join Date: Jan 2014
Location: Birmingham, AL
Posts: 1,611
I have not taken the chassis out yet, so I really don't have any idea what I'm up against. I have recapped a few radios, so unless there is no rotten rubber wiring or unobtanium parts, I think I can handle it.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan
Reply With Quote
Audiokarma
  #11  
Old 07-17-2016, 01:26 AM
kvflyer kvflyer is offline
VideoKarma Member
 
Join Date: Nov 2006
Location: Fernandina Beach, FL
Posts: 1,057
Quote:
Originally Posted by TUD1 View Post
I have not taken the chassis out yet, so I really don't have any idea what I'm up against. I have recapped a few radios, so unless there is no rotten rubber wiring or unobtanium parts, I think I can handle it.
The most important and expensive parts appear to be OK, the flyback, yoke and CRT. And since the cabinet is in good condition, what do you have to loose but a few bucks for capacitors? Go for it!
Reply With Quote
  #12  
Old 07-17-2016, 10:00 AM
TUD1's Avatar
TUD1 TUD1 is offline
TheUniversalDave1
 
Join Date: Jan 2014
Location: Birmingham, AL
Posts: 1,611
Thanks for the encouragement, kvflyer. I'll probably take this TV back to the club this weekend and begin working on it. I just need to find a schematic.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan
Reply With Quote
  #13  
Old 07-17-2016, 11:19 AM
Kevin Kuehn's Avatar
Kevin Kuehn Kevin Kuehn is offline
Workin' Late Again
 
Join Date: Jan 2011
Location: WI
Posts: 3,824
Quote:
Originally Posted by jr_tech View Post

Out of curiosity, what do people dislike about the yellow caps?
Most likely because they're shinny bright yellow. Ironically they're cosmetically and construction wise about the closest thing to the original types used. I've removed thousands of old paper caps that were apparently originally yellow, except that they've darkened over the years from heat and dirt.
Reply With Quote
  #14  
Old 07-17-2016, 11:22 AM
Kevin Kuehn's Avatar
Kevin Kuehn Kevin Kuehn is offline
Workin' Late Again
 
Join Date: Jan 2011
Location: WI
Posts: 3,824
Quote:
Originally Posted by TUD1 View Post
Thanks for the encouragement, kvflyer. I'll probably take this TV back to the club this weekend and begin working on it. I just need to find a schematic.
Schematic is a free download from the ETF archives.

http://www.earlytelevision.org/pdf/R...Sams-113-7.pdf
Reply With Quote
  #15  
Old 07-17-2016, 06:20 PM
TUD1's Avatar
TUD1 TUD1 is offline
TheUniversalDave1
 
Join Date: Jan 2014
Location: Birmingham, AL
Posts: 1,611
Thanks. I printed it out on my mother's printer, but right when I got to the schematic parts, the ink ran out.
__________________
"If you wish to make an apple pie from scratch, you must first invent the universe." -Carl Sagan
Reply With Quote
Audiokarma
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 07:27 AM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.