Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Vintage TV & Radio Tech Forum

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 12-19-2012, 09:05 PM
Rainner's Avatar
Rainner Rainner is offline
VideoKarma Member
 
Join Date: Dec 2012
Posts: 16
just bought a 16" 1951 zenith porthole

I just Bought a 16"1951 zenith porthole tv I turned it on and the picture is not as clear as I think it should be. The guy I bought it from said it was fully resorted but that he had not turned it on for six years.The picture is also off center and there is a hum that i cant identify and I know nothing about electronics new or old anyone have any suggestions.

Any help would be greatly appreciated

Don
Reply With Quote
  #2  
Old 12-19-2012, 10:24 PM
Dangler's Avatar
Dangler Dangler is offline
VideoKarma Member
 
Join Date: Aug 2011
Location: Douglas,Wyoming
Posts: 325
It sounds like it wasn't "fully restored". At the very least it's going to need the power supply recapped from your description of the hum. I wouldn't run it any more until you get at least that much done.
You should get a service manual, either downloaded from a lot of sites or someone here who has one.
You should post the model number and/or the chassis number.
There are lots of friendly people here who will help all they can.
__________________
" I'm gonna fix that one of these days"
Reply With Quote
  #3  
Old 12-20-2012, 05:14 AM
Sandy G's Avatar
Sandy G Sandy G is offline
Spiteful Old Cuss
 
Join Date: May 2003
Location: Rogersville, Tennessee
Posts: 9,571
Trust me, once you get yr Porthole runnin' right, you'll LOVE it ! Mine-a 1950 12" tabletop "Claridge" model- never fails to generate grins & compliments. Kids, especially, are completely amazed & "Taken" w/it.
__________________
Benevolent Despot
Reply With Quote
  #4  
Old 12-20-2012, 12:20 PM
Rainner's Avatar
Rainner Rainner is offline
VideoKarma Member
 
Join Date: Dec 2012
Posts: 16
thanks guys when i get home ill post the model number and ill try to get some video of what its doing so you can see and let me know more about what you think.
Reply With Quote
  #5  
Old 12-20-2012, 01:11 PM
Rainner's Avatar
Rainner Rainner is offline
VideoKarma Member
 
Join Date: Dec 2012
Posts: 16
good tv guy

I was also wondeing if anyone cound give the name of a good tv guy near flint michigan.
Reply With Quote
Audiokarma
  #6  
Old 12-20-2012, 01:56 PM
Rainner's Avatar
Rainner Rainner is offline
VideoKarma Member
 
Join Date: Dec 2012
Posts: 16
ok here is the model numer for this set that i just bought

this is the model number for this set "H2449E". Thanks for any help
Reply With Quote
  #7  
Old 12-20-2012, 02:08 PM
bandersen's Avatar
bandersen bandersen is offline
RCA 741PCS
 
Join Date: Mar 2009
Location: Chicago, IL
Posts: 8,103
That model uses the 24H20 chassis. You can download the service info here down at the bottom of the page.
__________________
Here are my Vintage Radio & TV YouTube Channel and Photo Gallery
Reply With Quote
  #8  
Old 12-20-2012, 02:13 PM
Dangler's Avatar
Dangler Dangler is offline
VideoKarma Member
 
Join Date: Aug 2011
Location: Douglas,Wyoming
Posts: 325
Quote:
Originally Posted by bandersen View Post
That model uses the 24H20 chassis. You can download the service info here down at the bottom of the page.
You beat me to it by two minutes!
__________________
" I'm gonna fix that one of these days"
Reply With Quote
  #9  
Old 12-21-2012, 01:10 PM
Rainner's Avatar
Rainner Rainner is offline
VideoKarma Member
 
Join Date: Dec 2012
Posts: 16
pic of my new porthole

Ok guys here are some pics for you to see the tv. was going to post some video so you can see what its doing but I was affraid to trun it on again untill I recap the power supply. I am not sure how to do that. I dont know if I will do It my self or just have a tv repair guy do it. Thanks for the service manual


Don
Attached Images
File Type: jpg DSCN1333.jpg (59.5 KB, 49 views)
File Type: jpg DSCN1336.jpg (56.7 KB, 31 views)
Reply With Quote
  #10  
Old 12-21-2012, 02:58 PM
Sandy G's Avatar
Sandy G Sandy G is offline
Spiteful Old Cuss
 
Join Date: May 2003
Location: Rogersville, Tennessee
Posts: 9,571
Looks to be a VERY nice example, indeed !
__________________
Benevolent Despot
Reply With Quote
Audiokarma
  #11  
Old 12-21-2012, 03:09 PM
Dangler's Avatar
Dangler Dangler is offline
VideoKarma Member
 
Join Date: Aug 2011
Location: Douglas,Wyoming
Posts: 325
Ooooh, that is nice! Hope you get it going. Maybe some caps in the power supply will get it up and running.
__________________
" I'm gonna fix that one of these days"
Reply With Quote
  #12  
Old 12-24-2012, 05:44 PM
Phil Nelson's Avatar
Phil Nelson Phil Nelson is offline
VideoKarma Member
 
Join Date: Jan 2006
Posts: 4,030
If you have zero electronics experience, that kind of TV is not a good learning project.

You could contact an area radio/TV collector club and ask for a repairman recommendation. Here's a list of clubs in the USA:

http://www.antiqueradio.com/clublist.html

If you want to tackle it yourself, I recommend getting a cheap 5-tube radio from a flea market or craigslist.org to practice on.

This article has basic information about replacing capacitors:

http://antiqueradio.org/recap.htm

Another article that may help:

http://antiqueradio.org/FirstStepsInRestoration.htm

If the simple radio works after recapping, that would give you an idea whether you want to dive into a television.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html
Reply With Quote
  #13  
Old 01-12-2013, 09:33 AM
Rainner's Avatar
Rainner Rainner is offline
VideoKarma Member
 
Join Date: Dec 2012
Posts: 16
all the caps under the power supply look new

all the caps under the power supply look new how do i know if the can capacitor is bad.
Reply With Quote
  #14  
Old 01-12-2013, 12:24 PM
Reece's Avatar
Reece Reece is offline
VideoKarma Member
 
Join Date: Jul 2004
Location: Cleona, PA
Posts: 2,178
The blonde models are much rarer, and that is a beautiful example!
__________________
Reece

Perfection is hard to reach with a screwdriver.
Reply With Quote
  #15  
Old 01-16-2013, 07:14 AM
7"estatdef 7"estatdef is offline
VideoKarma Member
 
Join Date: Aug 2005
Location: Roslyn,Pa near Phila.
Posts: 406
If they are the originals they dieing from old age. Replace them just to be safe.
Terry
Reply With Quote
Audiokarma
Reply



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 12:09 PM.



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