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 06-08-2015, 03:22 PM
timmy's Avatar
timmy timmy is offline
VideoKarma Member
 
Join Date: Jan 2011
Location: Delaware ny
Posts: 3,709
verticle problem

hey all, im working on this 48 motorola table top 7 inch , but as you can see this is a scope 7 inch crt. i went over all resistors unless i missed one but i dont think i did but these lines and rolling i cannot find whats going on here. i subbed tubes and changed resistor values around on the vert hold and vert size but no luck. if i shorten the pic top and bottom with the vert size it will become better stable but i cant widen the screen up and down because it goes crazy. any ideas where i might look as i probably missed something here. these lines may not be there and then they come right back and the longer i leave it on the worse it gets. i even tried another vert pot and vert size pot nothing changed. would something possibly in the IF section do this because upon getting it going for the first time i had nothing, no sound or picture until i rotated the pot for channel 3 and i got picture and the sound but had to rotate a different pot to get the sound good. thing here is there is an old piece of paper tape that had writen on it " if dead" so i dont know if this was an existing problem or not and then i got it with the IF problem. this is why i am wondering if an IF problem would give these lines. one other thing, does anyone here know how to read mics colors, i got a mica that has , red, green , brown , colors ?

Last edited by timmy; 01-19-2016 at 10:22 AM.
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 07:41 PM.



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