Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Solid State CRT Televisions

Notices

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 01-15-2026, 07:02 PM
vol.2's Avatar
vol.2 vol.2 is offline
VideoKarma Member
 
Join Date: Feb 2023
Posts: 416
Typically, a pattern generator is the thing.

If you own a Nintendo Wii, you can do an easy (and reversible) soft mod on it to allow homebrew apps, and get a copy of 240p test suite on it.

The Wii is really good for this as it outputs composite, s video and component.

240p test suite also exists for many other systems, but they obviously require you buy a cartridge version which is more expensive.

Another way to do it is to get a VGA to composite adapter and hook up a PC to it with a VGA output.

Yet another option is to find a test pattern DVD image online, burn it to a DVD player, and play the DVD.

You can of course just go buy a pattern generator, but a good working one is starting to get expensive. When I was buying them, they were cheap.

Don't buy a Heathkit one, they are flakey. I've gone through 2 of them and the ICs both died.
Reply With Quote
  #2  
Old 01-16-2026, 10:58 AM
Electronic M's Avatar
Electronic M Electronic M is offline
M is for Memory
 
Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
Posts: 15,473
Quote:
Originally Posted by vol.2 View Post
Typically, a pattern generator is the thing.

If you own a Nintendo Wii, you can do an easy (and reversible) soft mod on it to allow homebrew apps, and get a copy of 240p test suite on it.

The Wii is really good for this as it outputs composite, s video and component.

240p test suite also exists for many other systems, but they obviously require you buy a cartridge version which is more expensive.

Another way to do it is to get a VGA to composite adapter and hook up a PC to it with a VGA output.

Yet another option is to find a test pattern DVD image online, burn it to a DVD player, and play the DVD.

You can of course just go buy a pattern generator, but a good working one is starting to get expensive. When I was buying them, they were cheap.

Don't buy a Heathkit one, they are flakey. I've gone through 2 of them and the ICs both died.
I've been using 3 different Heathkits for several years. They aren't the best, but I've never had a dead IC....I have seen plenty of flakey IC sockets though. Usually reseating ICs cures socket issues I often do that with it running into a TV so I can see what is going on..
__________________
Tom C.

Zenith: The quality stays in EVEN after the name falls off!
What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4
Reply With Quote
  #3  
Old 01-16-2026, 11:49 AM
vol.2's Avatar
vol.2 vol.2 is offline
VideoKarma Member
 
Join Date: Feb 2023
Posts: 416
Quote:
Originally Posted by Electronic M View Post
I've been using 3 different Heathkits for several years. They aren't the best, but I've never had a dead IC....I have seen plenty of flakey IC sockets though. Usually reseating ICs cures socket issues I often do that with it running into a TV so I can see what is going on..
The heathkits I have don't have sockets for the ICs. They just went bad, and rebuilding them with new passive components made no difference. The ICs will work for about 30 seconds and then fritz out and fail. Spraying them with cold spray momentarily restores function. After having two of the crap out in the same way, I decided not to buy NOS ICs for them because I felt like they are too likely to die.

I just got a good BK unit and that never has any trouble. That and the Wii with 240p test suite are serving me well now.
Reply With Quote
  #4  
Old 01-16-2026, 12:58 PM
TinCanAlley's Avatar
TinCanAlley TinCanAlley is offline
VideoKarma Member
 
Join Date: Sep 2008
Location: So Cal, CA
Posts: 1,020
I have a leader LCG-396. Should I bring up the color bars or white screen and press the chroma button to remove color signal?

While we're on the subject of pattern generators, I was going to use it to redo my convergence, but have a quick question about the center screen magnets. If I understand it correctly, the red and green static convergence magnets move them diagonally and each one is a different direction so you go back and forth until they cross paths just right to converge. Should I move the blue out of center so I can align the red and green, then move the blue into position? The blue moves horizontally and vertically through separate controls. If I get it right I should have a decent white dot on the screen. Then I use the convergence controls with the grid pattern for dynamic adjustments and keep an eye on the center and readjust the static as needed?
__________________
Pioneer SX-1080, Pioneer PL-115D, Pioneer CT-F9191, Pioneer RG-1, Wollensak 8050A, Akai 4000DS MkII, Pioneer CS-05 & Polk 1.2TL

Denon 5803A, Pioneer DVL-700, Pioneer CT-W603RS, Toshiba HD-A3, D-Link DSM-520, Dish VIP-722, Polk 1.2TL, CSi5, LS/fx, RT-800 and PSW-650
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 10:20 PM.



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