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 07-06-2018, 07:20 PM
Zsuttle's Avatar
Zsuttle Zsuttle is offline
VideoKarma Member
 
Join Date: Apr 2018
Location: Virginia Beach, VA
Posts: 55
Rca 6T54

Well looks like I picked up another set, I've never worked with metal cone CRT's before. (but free is free) Someone correct me if I'm wrong, but the whole metal on the tube (16GP4) carries the HV, correct? Seemingly a little dangerous if you ask me. Anyways, assuming this tube has a life left in it, should I seal the tube with anything? I've heard that the metal-glass junctions are the weak point in any of these tubes.
__________________
"If it isn't broke, you aren't trying hard enough"
Reply With Quote
  #2  
Old 07-06-2018, 09:30 PM
bgadow's Avatar
bgadow bgadow is offline
VideoKarma Member
 
Join Date: Oct 2003
Location: Federalsburg, MD
Posts: 5,516
Yes, the whole cone will carry HV. Some sets had a plastic shield, but not all. It sure will command your respect! I've had at least a half dozen metal cone sets plus various spare tubes and I don't think any of them had gone to air.
__________________
Bryan
Reply With Quote
  #3  
Old 07-06-2018, 09:43 PM
Zsuttle's Avatar
Zsuttle Zsuttle is offline
VideoKarma Member
 
Join Date: Apr 2018
Location: Virginia Beach, VA
Posts: 55
Thought I would post some photos since I was able to haul this behemoth onto my workbench. This thing is absolutely massive for a "tabletop" TV, most of the other 6Txx's I have seen were freestanding floor models.
I'm also happy to announce that the 16GP4 was coaxed back from the dead, now testing borderline good. I'm hopeful that this will produce a nice bright picture when it's completed. More to come soon

20180706_221657.jpg
20180706_223153.jpg
20180706_180902.jpg
20180706_215334.jpg
__________________
"If it isn't broke, you aren't trying hard enough"
Reply With Quote
  #4  
Old 07-06-2018, 11:30 PM
EdKozk2 EdKozk2 is offline
Tinker
 
Join Date: Mar 2014
Location: Elkhorn, WI
Posts: 489
Hi.
I recapped a RCA 6T65 last January. It uses the same chassis most likely, a 47A. The chassis was known to kill power transformers, deflection yokes, and horizontal flyback transformers. In order to get my set operational after the recapping, I ended up replacing the flyback and yoke. I had to replace the width control also. You may want to check the power transformer windings and flyback windings before you start your recap.
Ed
Reply With Quote
  #5  
Old 07-07-2018, 11:41 AM
Electronic M's Avatar
Electronic M Electronic M is offline
M is for Memory
 
Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
Posts: 9,668
Quote:
Originally Posted by Zsuttle View Post
This thing is absolutely massive for a "tabletop" TV, most of the other 6Txx's I have seen were freestanding floor models.
I've seen a couple of those and your mistaken. They were not consoles, but rather all table models just like yours...There was a matching factory stand that was very popular (most sets seem to have it) which gave the illusion of it being a console.
__________________
Tom C.

What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4

Reading between the scan lines since the mid 2000's.
Reply With Quote
Audiokarma
  #6  
Old 07-07-2018, 01:50 PM
Zsuttle's Avatar
Zsuttle Zsuttle is offline
VideoKarma Member
 
Join Date: Apr 2018
Location: Virginia Beach, VA
Posts: 55
Quote:
Originally Posted by EdKozk2 View Post
You may want to check the power transformer windings and flyback windings before you start your recap.
Ed
I'm happy to report that the flyback, power transformer, and yoke all appear to check out. However, it seems that 80% of the capacitors in this were "replaced" in the 60's, though they are all just tack soldered onto the connections. (A few had broken off as well)

Quote:
Originally Posted by Electronic M View Post
I've seen a couple of those and your mistaken. They were not consoles, but rather all table models just like yours...There was a matching factory stand that was very popular (most sets seem to have it) which gave the illusion of it being a console.
I was referring to the other models in the 6TXX family. Correct me if I'm wrong but every other model (6T64, 6T65, 6T71, 6T74, 6T75, 6T76) was a console which shared most electronic components. I was just noting that this seems a little large for a tabletop model. I think she had the stand, but I free is free and I didn't want to ask.

It's intresting, almost every non RCA tube that had been replaced was bad and every RCA tube was good. I've never noticed that in sets, but do certain tubes tend to wear out faster than others?
__________________
"If it isn't broke, you aren't trying hard enough"
Reply With Quote
  #7  
Old 07-07-2018, 09:10 PM
bgadow's Avatar
bgadow bgadow is offline
VideoKarma Member
 
Join Date: Oct 2003
Location: Federalsburg, MD
Posts: 5,516
Glad you posted the pictures; I'm not good at remembering chassis numbers. I have one of these, special as it belonged to my great-grandparents. Outside of assuring the crt is good I've not touched it. It also has the separate stand.
__________________
Bryan
Reply With Quote
  #8  
Old 07-07-2018, 09:24 PM
benman94's Avatar
benman94 benman94 is offline
Resident Lunatic
 
Join Date: Jun 2011
Location: Detroit, MI
Posts: 1,063
Quote:
Originally Posted by Zsuttle View Post
I'm happy to report that the flyback, power transformer, and yoke all appear to check out. However, it seems that 80% of the capacitors in this were "replaced" in the 60's, though they are all just tack soldered onto the connections. (A few had broken off as well)



I was referring to the other models in the 6TXX family. Correct me if I'm wrong but every other model (6T64, 6T65, 6T71, 6T74, 6T75, 6T76) was a console which shared most electronic components. I was just noting that this seems a little large for a tabletop model. I think she had the stand, but I free is free and I didn't want to ask.

It's intresting, almost every non RCA tube that had been replaced was bad and every RCA tube was good. I've never noticed that in sets, but do certain tubes tend to wear out faster than others?
The non-RCA tubes were probably the failure prone types that would have been replaced during the service life of a set. It's very common to see a different horizontal output tube, different vertical output tube, different HV rectifier, different LV rectifiers, a different 6SN7 in the Synchro-Guide circuit, etc

Detector diodes, RF/IF pentodes, the oscillator and mixer in the tuner, etc, were all taxed much less in use and tended to last a much longer time in service. One of my 630 clones has what I believe to be all original tubes; except for the HOT and the HV rectifier.
Reply With Quote
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 02:30 AM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
ęCopyright 2012 VideoKarma.org, All rights reserved.