Videokarma.org

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

Notices

We appreciate your help

in keeping this site going.
 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 04-15-2012, 11:19 PM
Eric H's Avatar
Eric H Eric H is offline
Administrator
 
Join Date: Jun 2002
Location: So. Calif
Posts: 11,565
So now what do I do? Magnavox.

Some of you may remember this 1955 Maggie from a few months ago, it's a 24" model, it has a separate 6V6 PP Amplifier and two 10" speakers mounted underneath the chassis area.

It would smoke the 5U4 rectifier if plugged in because it had a shorted Capacitor somewhere.

I had pretty much decided to strip it for parts but I really wanted to see it play before I did that.

I took the chassis out and threw it on the bench, I plugged in a solid state 5U4 substitute so I wouldn't ruin another tube and brought it up on the variac.

Nothing seemed amiss, it was getting several hundred volts on the main filters with no apparent distress, however there were two smaller Axial type Electrolytics under the chassis that looked really bad, electrolyte had been leaking out of them and the ends looked a little bulged.

After running at about 90 volts for a few minutes off and on those caps felt slightly warm, I clipped them out and soldered in what I had handy, one was a non polarized cap so I hooked two regular caps with the negative together and the positives at either end, this should be OK except the voltage rating was 100 volts less than the original.

I also replaced an 18k 5 watt resistor going to the HO tube, it had gone open.
After all that I powered it up again, I couldn't tell if it was doing anything so I tried to stick a screwdriver under the 1B3 cap, I got a small shock so I figured it was working.

Time to put it back in the cabinet and see what the big tube would do, hooked up a DVD player and both sound and picture came in full and strong!
The sound on this set will rattle the walls!

So now my dilemma is what to do with it, the CRT works well despite checking weak and having been rejuved on a Beltron.
I can't really see junking it now, maybe hang on until a tube comes along?

Anyway, I put up a short video of it playing on Youtube, pictures can't convey how good it sounds like a video can.

http://www.youtube.com/watch?v=3qHqIg1wubs
Attached Images
File Type: jpg mag24.jpg (15.6 KB, 75 views)

Last edited by Eric H; 04-16-2012 at 09:15 PM.
Reply With Quote
 



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 09:48 AM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2026, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.