Videokarma.org

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

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 01-24-2017, 01:39 PM
timmy's Avatar
timmy timmy is offline
VideoKarma Member
 
Join Date: Jan 2011
Location: ferndale ny
Posts: 3,504
7jp4

Got a set that has a 7jp4 in it but to get a decent pic I have to lower the brightness otherwise the screen is really bright when the bright is raised up but no picture can be seen just really bright blank screen. Would this be an indication the the tube is weak or gassy or a fault with the set its in. Because there are a lot of theory's out there about how a 7 jp4 behaves when it's going bad or not so just trying to figure what's what.
Reply With Quote
  #2  
Old 01-24-2017, 01:44 PM
Eric H's Avatar
Eric H Eric H is offline
Administrator
 
Join Date: Jun 2002
Location: So. Calif
Posts: 11,565
The image tends to go negative looking at higher brightness when they are weak.
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 10:37 AM.



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