LinuxQuestions.org
Review your favorite Linux distribution.
Go Back   LinuxQuestions.org > Forums > Non-*NIX Forums > General
User Name
Password
General This forum is for non-technical general discussion which can include both Linux and non-Linux topics. Have fun!

Notices


Reply
  Search this Thread
Old 09-24-2020, 11:11 AM   #16
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Pi OS & Android
Posts: 11,872

Rep: Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393

Quote:
Originally Posted by hazel View Post
A lot of digital TVs still use a CRT for their display. Mine does.
CRTs were the best way of doing it until TFT became affordable. CRTS had worked up to ≤10 years life span by the time the last of them went out (early 2000s?) They were still 150-200 Watts, with 125-150 watts in the line output.

You'll know a CRT telly because it doesn't warm up for ~20 seconds after switch on. Then, as it starts to go, when you turn up the brightness & contrast, the screen starts flaring because the tube is gone. The crt can be boosted, which gives it life for another year or two.
 
Old 09-24-2020, 11:39 AM   #17
cynwulf
Senior Member
 
Registered: Apr 2005
Posts: 2,446

Rep: Reputation: 1803Reputation: 1803Reputation: 1803Reputation: 1803Reputation: 1803Reputation: 1803Reputation: 1803Reputation: 1803Reputation: 1803Reputation: 1803Reputation: 1803
Quote:
Originally Posted by petelq View Post
the UK is completely digital now (for tv)[...]
Yes we now have several hundred channels of utter [removed] instead of just 4 or 5. On a positive note - it's high definition [removed].

I'm glad I don't have a TV anymore (but I still get pestered and threatened by the TV licensing nazis every year or so).
 
Old 09-24-2020, 12:07 PM   #18
petelq
Member
 
Registered: Aug 2008
Location: UK
Distribution: openSUSE(Leap and Tumbleweed) and a regularly changing third
Posts: 506

Rep: Reputation: Disabled
Quote:
Originally Posted by cynwulf View Post
Yes we now have several hundred channels of utter [removed] instead of just 4 or 5. On a positive note - it's high definition [removed].
I agree with your assessment but my wife would not let me get rid of the tv, although I watch very little and would not miss it.
I do have mythtv on the pc and record the odd film that I think I may like. I don't think any of our equipment would affect anyone else's enjoyment of the web.
 
Old 09-24-2020, 02:34 PM   #19
EdGr
Member
 
Registered: Dec 2010
Location: California, USA
Distribution: I run my own OS
Posts: 509

Rep: Reputation: 241Reputation: 241Reputation: 241
Quote:
Originally Posted by cynwulf View Post
Yes we now have several hundred channels of utter [removed] instead of just 4 or 5. On a positive note - it's high definition [removed.

I'm glad I don't have a TV anymore (but I still get pestered and threatened by the TV licensing nazis every year or so).
I used to joke that more pixels would not fix the problem with television.

I got rid of the television two decades ago. Since then, the industry conspired to turn my computers into television.
Ed
 
Old 09-24-2020, 03:17 PM   #20
rnturn
Senior Member
 
Registered: Jan 2003
Location: Illinois (SW Chicago 'burbs)
Distribution: Currently: openSUSE, Raspbian, Slackware. Formerly: CentOS, MacOS, Red Hat. Other: Solaris, Tru64
Posts: 2,112

Rep: Reputation: 344Reputation: 344Reputation: 344Reputation: 344
Quote:
Originally Posted by fatmac View Post
So, BT Openreach must have cut some corners when setting up their wifi system, for an old TV to cause it problems....
Perhaps their installers were as "skilled" as those that serviced the apartment building we lived in during the mid-'90s. We got basic cable whenever our neighbor subscribed to cable, even though we weren't subscribers ourselves. The working theory was that their wiring was shoddily installed was leaking RF so much that our TV handily picked it up. No premium channels, of course, as that would have required a decoder box, but big whoop.
 
Old 09-24-2020, 05:16 PM   #21
jefro
Moderator
 
Registered: Mar 2008
Posts: 20,222

Rep: Reputation: 3196Reputation: 3196Reputation: 3196Reputation: 3196Reputation: 3196Reputation: 3196Reputation: 3196Reputation: 3196Reputation: 3196Reputation: 3196Reputation: 3196
As we sat 3 feet from our old black and white console TV, little did we know that we were getting bombarded with X-rays.
 
Old 09-26-2020, 03:28 AM   #22
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Pi OS & Android
Posts: 11,872

Rep: Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393
The really nasty ones were the 1960s era colour tvs - you could take X-rays with those. The nearest thing here was these old Philips tvs which gave intractable problems and had this massive wiring loom going everywhere. Health & Safety would require a fork-lift to move them now, but we used to carry them single handed. One third of Irish tv engineers had s dodgy back.
 
Old 09-26-2020, 09:51 AM   #23
GPGAgent
Member
 
Registered: Oct 2018
Location: Cornwall UK
Distribution: Mint 20 xfce 64bit
Posts: 519
Blog Entries: 2

Rep: Reputation: 61
Quote:
Originally Posted by hazel View Post
A lot of digital TVs still use a CRT for their display. Mine does.
What make and model is it just out of interest?
 
Old 09-26-2020, 10:09 AM   #24
hazel
Senior Member
 
Registered: Mar 2016
Location: Harrow, UK
Distribution: LFS, AntiX, Slackware
Posts: 4,712

Original Poster
Blog Entries: 13

Rep: Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688
It's a Toshiba 28/32YT56. I bought it in 2005.
 
Old 09-28-2020, 11:38 AM   #25
rnturn
Senior Member
 
Registered: Jan 2003
Location: Illinois (SW Chicago 'burbs)
Distribution: Currently: openSUSE, Raspbian, Slackware. Formerly: CentOS, MacOS, Red Hat. Other: Solaris, Tru64
Posts: 2,112

Rep: Reputation: 344Reputation: 344Reputation: 344Reputation: 344
Quote:
Originally Posted by hazel View Post
A lot of digital TVs still use a CRT for their display. Mine does.
The Hitachi projection set we had up until a couple of years ago had a digital tuner section---and three CRTs that made up the projection part of the set. I had to periodically run through the convergence utility built into the set to get the three colors lined up properly. I don't miss having to do that.

When we moved (and downsized to a place where the big projection set wouldn't easily fit) we tried to give it to a local veteran's organization thinking they'd love to put it in their local "lodge" to watch TV after meetings. Nope. Not fancy enough.
 
Old 09-28-2020, 12:10 PM   #26
sgosnell
Senior Member
 
Registered: Jan 2008
Location: Baja Oklahoma
Distribution: Debian Stable and Unstable
Posts: 1,544

Rep: Reputation: 427Reputation: 427Reputation: 427Reputation: 427Reputation: 427
Around here you can't give CRT TVs away, and that's not recent. Some were donated for a church yard sale, and no one would take them, even for free. It's the same with video cassette players and other obsolete equipment. Not much call for buggy whips, either.
 
Old 09-29-2020, 05:04 AM   #27
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Pi OS & Android
Posts: 11,872

Rep: Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393
IIRC, there's degaussing coils with a ptc thermistor which should degauss the set so the convergance stays straight. There was also a degausser for tv repairmen. It was one big electromagnet which you used to go around the outside, and then pulled it further & further away until you ran out of lead. then you pointed it at the centre of the screen and turned off. Otherwise, you could regauss the tube turning it off with the inductive spike

Hazel, if you've a 15 year old tube, you obviously don't use it much. Does it still take full brightness/contrast without flaring? Presuming not, you may be interested in tube boosting. I can explain the process if needed.
 
Old 09-29-2020, 05:19 AM   #28
hazel
Senior Member
 
Registered: Mar 2016
Location: Harrow, UK
Distribution: LFS, AntiX, Slackware
Posts: 4,712

Original Poster
Blog Entries: 13

Rep: Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688Reputation: 2688
Quote:
Originally Posted by business_kid View Post
Hazel, if you've a 15 year old tube, you obviously don't use it much. Does it still take full brightness/contrast without flaring? Presuming not, you may be interested in tube boosting. I can explain the process if needed.
I don't know what you mean by flaring. Or "full" brightness/contrast. The visual settings that I use give me a reasonable picture. Why should I use higher ones?

But you're right that I don't view a lot. I've sort of lost interest in nature programs, which all seem to be about killing nowadays. I don't watch plays or soaps because the actors always mumble and I can't understand them. I watch the news mainly and sometimes I find an interesting factual program. Yesterday I watched the second in a fascinating series of programs on BBC4 about the history of writing. I can recommend it to those who watch on catchup.

Last edited by hazel; 09-29-2020 at 05:38 AM.
 
Old 09-30-2020, 04:18 AM   #29
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Pi OS & Android
Posts: 11,872

Rep: Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393Reputation: 1393
Quote:
I don't know what you mean by flaring. Or "full" brightness/contrast. The visual settings that I use give me a reasonable picture. Why should I use higher ones?
Quite right - you shouldn't. It's done purely to check tube condition.
 
Old 10-01-2020, 02:54 PM   #30
onebuck
Moderator
 
Registered: Jan 2005
Location: Summer Midwest USA, Central Illinois, Winter Central Florida
Distribution: SlackwareŽ
Posts: 13,622
Blog Entries: 34

Rep: Reputation: 2803Reputation: 2803Reputation: 2803Reputation: 2803Reputation: 2803Reputation: 2803Reputation: 2803Reputation: 2803Reputation: 2803Reputation: 2803Reputation: 2803
Member Response

Hi,

Quote:
Originally Posted by smallpond View Post
I used to work for a company that made CRT monitors. Not only did they use potentially lethal high voltage, but a 21" glass CRT bottle contains about 5 pounds of lead to keep the X-rays that it generates from frying its users. Thanks, Mom, for all those times you said "Don't sit too close to the TV".

Flat screens don't have those specific problems, but they still use some wonderfully toxic chemicals, so still have serious disposal issues.
Not to argue your point of lead as shield but another purpose for adding lead to the glass is to improve the optical quality of the CRT at the front face. You will get shielding from the electron beam generated by the gun as an added benefit.

Whenever accessing a CRT based equipment be sure to un-plug the power source and to discharge the aquadag to ground to discharge the capacitor for the CRT. The charge for the CRT is very high therefore dangerous when working with the unit.

Hope this helps.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Dual boot, did I break my BIOS or wreck my video card? faberoo Linux - Newbie 17 11-05-2007 05:41 AM
LXer: .org VILLAGE SET TO SHOWCASE THE LATEST DEVELOPMENTS IN FREE OPEN ... LXer Syndicated Linux News 0 10-07-2006 07:21 PM
LXer: Firefox Extension Could Wreck MSN AdCenter LXer Syndicated Linux News 0 12-12-2005 04:01 PM
windows about to wreck my mbr disorderly Linux - General 1 05-26-2004 10:56 AM
Kernel wreck... zokter Slackware 5 12-17-2003 09:38 PM

LinuxQuestions.org > Forums > Non-*NIX Forums > General

All times are GMT -5. The time now is 05:14 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration