Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Solid State CRT Televisions

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #16  
Old 06-10-2013, 10:30 PM
davet753's Avatar
davet753 davet753 is offline
David Thomas
 
Join Date: Mar 2013
Location: Knoxville, TN
Posts: 443
I had a good friend whose shop repaired primarily Zenith sets. He drove around in a van that was stocked to the gills with Zenith modules. Zenith's modular design allowed him to do a huge business repairing sets "in-home".
Reply With Quote
  #17  
Old 06-11-2013, 07:44 AM
zeno's Avatar
zeno zeno is offline
VideoKarma Member
 
Join Date: Mar 2013
Location: New Hampshire
Posts: 4,672
Quote:
Originally Posted by Rod Beauvex View Post
Wait, what? So the sets still worked with the spark bulbs fried?
Here is the gap I was talking about.

http://www.google.com/patents/US4438365

There were a few slightly different styles. The 3rd wire went to the TV's
cold ground. Find it in any Zenith from late 1970's through the
one board paper mache PCB's of the 90's.
Most sets are on cable. This puts the TV cold ground to earth. Power
line gets hit & it arcs across to earth instead of using the high
resistance path through all the delicate stuff like IC's, tuners,
thin etches etc. Or it can just arc across the line.
Some makers printed them on the PCB but they were not as
close spaced so not to effective.
If I were building a project or protecting something of value I
would use one, just be sure to use it AFTER the line fuse.

73 Zeno
Reply With Quote
  #18  
Old 06-18-2013, 09:13 PM
NowhereMan 1966's Avatar
NowhereMan 1966 NowhereMan 1966 is offline
Slave to 1 Cat
 
Join Date: Dec 2004
Location: Tiltonsville, OH
Posts: 884
I'm following this thread as well, my 1982 System 3 25 inch console Zenith is the 9-181/9-186 combo and every once in a while, I do get that buzzing noise when I turn it on and then when I turn it off and back on, It's OK. I might have an issue with a cap or two in mine, the pic does go red every once in a great while and does it for a while like a day or two and then it is OK for several months plus there is almost a half an inch of gap with the raster at the bottom. Well, it is 31 years old so it is bound to have some issues but it is our daily watcher and the picture is still excellent. Still, I like to read here so I can learn. IIRC, the buzzing is from the tuner (as it was pointed out here) and I do have a spare tuner here so I'll keep that in mind.

We did semi-retired it in 2009 (although I did use it everyday in the computer room) when my aunt gave us a 35 inch Sony but the Sony died a few months ago. We were looking at LED TV's until Mom was diagnosed with breast cancer (along with money problems) so we are busy fighting that. So Mom instead said, "bring the Zenith back," so it is our daily watcher again until we are able to get an LED TV. Still she said that she'd rather fix the Zenith than buy new so who knows?
__________________
Mom (1938 - 2013) - RIP, I miss you
Spunky, (1999 - 2016) - RIP, pretty girl!
Rascal, (2007 - 2021) RIP, miss you very much
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 05:52 PM.



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