Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Rectangular Screen Tube Televisions

Notices

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 01-03-2010, 11:14 PM
zenith2134's Avatar
zenith2134 zenith2134 is offline
VideoKarma Member
 
Join Date: Feb 2005
Location: UTC -4
Posts: 2,546
Agreed.

Also, there are many times when I prefer a rotary variable resistor control as opposed to some newer EEPROM based menu setting.... but remote control IS nice at times...

On some Sony and JVC sets it's also a good idea to turn down or shut off the velocity-scan modulation feature for most applications....

OT: the thread title reminds me of a quote from Seinfeld or something
Reply With Quote
  #2  
Old 01-05-2010, 01:46 PM
Jeffhs's Avatar
Jeffhs Jeffhs is offline
<----Zenith C845
 
Join Date: Feb 2003
Location: Fairport Harbor, Ohio (near Lake Erie)
Posts: 4,035
My ten-year-old RCA CTC185 XL-100 19" set has an "auto color" menu option (in the "picture quality" on-screen menu), but I set it to "off" a long time ago and forgot about it. Don't need it anyway, with today's rock-stable cable/satellite signals and vastly improved color processing systems in today's color TVs and stations/networks, as opposed to sets and broadcast signals/equipment of the '70s and earlier.

I agree that the so-called "auto color" preset controls, switched in and out via a front-panel button, are often set too high and almost always not to the viewer's preferences. I think these controls are preset at the factory, using a color-bar test pattern from a generator rather than with a broadcast signal. My CTC-185 has a menu option on the picture-quality OSD menu (option number seven, "reset picture controls") as well, but I'm sure all this does is reset the picture controls (except contrast) to midpoint (and the auto-color option on), which I think are the factory defaults.

I think the best way to deal with these so-called "auto color" schemes is simply to shut them off, forget them, and adjust the color controls on the set to your liking. IMHO, viewers should not allow a preset system to determine the looks of their color picture; everyone's preferences are different, and I think a person's eyes are a much better judge of screen color, flesh tones, etc. than any fancy electronic circuitry in the TV set. One manufacturer of flat-panel HDTVs (I don't recall which one) advertises an automatic feature in their sets it refers to as "Intellibrite" or some such. This system is supposed to adjust the LCD backlight brightness according to the brightness of room lighting, not unlike RCA's Colortrak system, Magnavox's Videomatic, "TAC" or Total Automatic Color, et al., all of which also used a photocell mounted under the CRT to monitor room lighting and adjust the brightness accordingly. I once had a GE portable b&w TV in the '70s (the set itself must have been pre-'64 or fifties vintage, as it was VHF only) that used a photocell to adjust image brightness according to room lighting, with a defeat switch on the rear of the chassis; I've never seen anything like it on a b&w set since.
__________________
Jeff, WB8NHV

Collecting, restoring and enjoying vintage Zenith radios since 2002

Zenith. Gone, but not forgotten.
Reply With Quote
  #3  
Old 01-05-2010, 02:56 PM
DaveWM DaveWM is offline
VideoKarma Member
 
Join Date: Feb 2009
Location: Orlando FL
Posts: 5,607
all 3 of my maggie B&W all have that photo cell on the front, adj brightness to room lighting (all use the same mid 60's chassis). Works pretty well, but you need to select on of 3 possisble ranges (think its called magna lux for something like that) from a jumper on the chassis. Works pretty well, and amazes folks that see it (there are a LOT of people that have never seen a B&W set, guess I am getting old).
Reply With Quote
  #4  
Old 01-06-2010, 11:45 AM
Jeffhs's Avatar
Jeffhs Jeffhs is offline
<----Zenith C845
 
Join Date: Feb 2003
Location: Fairport Harbor, Ohio (near Lake Erie)
Posts: 4,035
Quote:
Originally Posted by DaveWM View Post
all 3 of my maggie B&W all have that photo cell on the front, adj brightness to room lighting (all use the same mid 60's chassis). Works pretty well, but you need to select on of 3 possisble ranges (think its called magna lux for something like that) from a jumper on the chassis. Works pretty well, and amazes folks that see it (there are a LOT of people that have never seen a B&W set, guess I am getting old).
I remember some Magnavox b&w TVs of '60s vintage having the "Magnalux" system, with the photocell that adjusted picture brightness according to ambient light levels. (IIRC, RCA also had a system similar to this on some of its high-end three-way entertainment-center consoles in the early '60s; I seem to remember seeing a photocell on such a set one of my great-uncles owned.) However, I did not realize that this system was adjustable only by means of a chassis jumper; I thought there would be a three-position switch on the rear chassis apron that would set the sensitivity level, with a defeat switch (or a fourth position on a rotary switch) to disable the feature if manual control of screen brightness was desired.
__________________
Jeff, WB8NHV

Collecting, restoring and enjoying vintage Zenith radios since 2002

Zenith. Gone, but not forgotten.
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 10:45 AM.



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