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.
Reply
 
Thread Tools Display Modes
  #1  
Old 04-08-2010, 09:20 PM
DaveWM DaveWM is offline
VideoKarma Member
 
Join Date: Feb 2009
Location: Orlando FL
Posts: 5,607
I am just going to use a two section 10 and 70 uf and wire it the way it is. there are some other differences from the schematic, for one the schematic has two diodes in series, I assume for some kind of voltage drop across one of them. This one does not and it all looks original. May have something to do with the 3.3k resistor after the 330 ohm. Just going to assume it was working so will go with it.
Reply With Quote
  #2  
Old 04-09-2010, 09:10 PM
DaveWM DaveWM is offline
VideoKarma Member
 
Join Date: Feb 2009
Location: Orlando FL
Posts: 5,607
whew done with the recap. only iffy thing is the dumb 10uf 450v caps are not clear on the negative.

they have cardboard on both ends (axial NSL brand), pinched on both ends.

Has a solid strip that has arrows in it pointing to one end. I am assuming this in negative since IIRC all modern caps ID the neg terminal.

I even scrapped one. Turned out the center of the cap was the negative. That threw me.
Reply With Quote
  #3  
Old 04-09-2010, 09:12 PM
DaveWM DaveWM is offline
VideoKarma Member
 
Join Date: Feb 2009
Location: Orlando FL
Posts: 5,607
power up went well, about 500ma AC at 120v, no smoke, no issues. Nice purple raster came up. That is about the extent of testing tonight.

I will give it a rest and try hooking it up tomorrow to a TV.

Last edited by DaveWM; 04-09-2010 at 09:39 PM.
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 03:52 PM.



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