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i took apart a tv and it looked different from the other 3 i had taken appart. the other 3 the yoke came rite off when i took the clamp thing off and pulled the yoke out carfully. but not this one its bonded to the picture tube and im not sure its safe to try and get it off any tips? its a hard red stuff not sure what it is.
crap i forgot to add what is the black copper covered in electrical tape called that goes around the tv?
Tap it with a hammer to knock it loose.
That's a degaussing cable.
The yoke will come off with a little gentle persuasion. And the other thing is called a degaussing cable/wire. Most usually copper but sometimes copper coated alum. wire. Just scratch it to be sure. And the little braided silver colored wire with the springs is copper also.
http://photos2.fotosearch.com/bthumb...2/k0825858.jpg
thanks so the tube wont bust and i wont get sucked into the tv? what happens if the tube breaks?
I'm thinking this is an accident waiting to happen!!!
I would just try And pry it off with a flat head. If you break the tube it will release the gas I would not try hitting of.
gas? oh thats not good i dont wanna release any gas its prolly worse than freon but i dont worry bout that much cause i no to cut the small tube to let the pressure out and then cut the tube from the freon tank or watever gas they use in window ac's. i dont think i wanna get gased lol. how much does a yoke from a medium to big tv typically weigh? its a 30 something i think not sure.
TV tubes are vacuum tubes with no air or gas in them. So don't worry about letting anything out. The only toxic material is lead in the glass.
if the yoke is stuck on try twisting it. thats how I get them off.
And thank you for polluting our atmosphere,,,Quote:
i no to cut the small tube to let the pressure out and then cut the tube from the freon tank or watever gas they use in window ac's.
WRONGQuote:
The only toxic material is lead in the glass.
Thank you, Wiki,,,Quote:
Phosphors are often transition metal compounds or rare earth compounds of various types. The most common uses of phosphors are in CRT displays and fluorescent lights. CRT phosphors were standardized beginning around World War II and designated by the letter "P" followed by a number.
Phosphorus, the chemical element named for its light-emitting behavior, emits light due to chemiluminescence, not phosphorescence.[1]
it mite break the tube if i twist this one its not like the rest most of the ones i took apart had this idk what its called it looks like a c and you unscrew the screw thats in it and pull it off and then wiggle the yoke off. but this one didnt have this c and screw thing. there was a label instead that said do not try and remove the permanently bonded yoke.Quote:
Originally Posted by PartTimeScrapper
did you know that the "c and screw thing" is made of stainless steel. Sometimes the screw itself isn't, but most of the time it is.....so put them in your stainless steel bucket.
thanks usually the screw is copper the ones that i found anyway. i didnt kno that it was stainless thoughQuote:
Originally Posted by Dumpster-Dee
Those are clamps,,,Quote:
did you know that the "c and screw thing" is made of stainless steel.
http://ts4.mm.bing.net/images/thumbn...6917383951.jpg
Here do some reading up,,
http://www.scrapmetalforum.com/showt...ling-a-Monitor
Im pretty sure im going to get some heat for this, but here goes. LIGHTLY tap the glass around the yoke with a hammer, grab the yoke, and twist. You will most likely pull a big chunk of glass out wirh the yoke, and leave a gaping hole in the tube. Be careful busting it up for the copper if glass is still attatched to it.
You seem scared about it. If your too freaked out/unsure, walk away. Not being confident will get you hurt, and gwtting hurt isnt worth 50 cents in copper. Just saying.
AND do NOT cut freon lines until they have been pumped by a pro. Again, if you cant do it, walk away. Getting sprayed with freon sucks (trust me i kno) and again...its NOT worth the 50 cents in copper.
This dude needs to read this forum more, all his questions have been answered so many times before. Always looking for the easy answer, if they cant do the work and search for their questions first, what makes you think they will do the work and strip items properly and safely. Sorry for being mean or blunt but people like this scare the hell out of me and Im not here to hold anybodies hand.
It's glued to the tube. No amount of twisting or prying will get it off. It's aluminum anyways. Every yoke thats glued to the tube is aluminum, just leave it where its at.
Interesting. Was not aware of that. One of the TV's you gave me had a big tin cover under the boards/yoke that I had to unbolt to get the degaussing cable. Had not seen one like it till then.
Drug home a big screen TV the other night. Saw it had posted to CL around 4pm. Saw it around midnight. Figured it was gone but decided I'd go for a drive since it was in Nampa. Pull it up on the GPS, and away I go.
I rolled up and it was still there. Bigger than it looked in the pic...I measure the lumber rack, then I measure the TV. Okay. If I lay it on its side I can squeeze under with an inch to spare.
Boy was it heavy. A boat anchor made in 1983. Get it home, plugged it in. Gets a picture, but it's fuzzy/faded. Onward to my first big screen tear down!
Big screens are fun, and easy. BE CAREFUL with the optic crap. Just, when you tear it down, make sure yer in the dirt or something. Since this is yer first one, you'll be unscrewin' everything. You will eventually drain the optic oil, and that chit dont evaporate for nothin. Not bad for ya, that i know, just gets everywhere and is annoying.
I've ran into those before. On the big tv's, you never know what you'll run into. It's like the people who make them get bored, and just throw random crap in there. It all adds up in the tin pile.
many I have seen have 3 or 4 rubber tabs between the tube and the yoke if you use a screw driver and work them side ways till they come out the yoke should slipp right off., if you have all the little plastic and alu bands above the yoke off. Wear a safety full face shield or at least safety glasses., and keep ypur mouth shut when removing the yoke : )
Haha olddude. Yep yer right for most tv's and monitors. But the ones that are glued dont have none of them tabs. They're just glued straight to the dern tube.
thx good to know. wont waste my time on them, **** junk is getten cheeper and cheeper made, what is the world commin to. : )
Hey Hoss, do you pay attention to what years has the cheap junk in it? Not a big deal but I'd be curious to know. The TV's I got from you varied from '01 to '82 IIRC.
Didn't pay attn for alum. Hope I don't have a lot of it.
The cheap junk USUALLY is 80's-90's from what i've seen. It varies with all different brands. Havent really been able to nail down a specific brand that sucks more than the rest lol.
haha. Yeah would be interesting to know why manufacturers do the things they do.
Oh well. We'll keep on forgin' on.
One simple word,, PROFIT!Quote:
Yeah would be interesting to know why manufacturers do the things they do.
True. I meant more along the lines of how things are designed. Some are complex. Some are kinda simple. A few have 1 or 2 boards. One I tore down last week had 7 or 8 boards tied together with miles of wire harnesses.
I just did a tv just like this 2 nights ago....luckily it is in my back yard. Even thought it is aluminum yoke and not copper, still worth taking.
The big circuit board (glad they are not worth nothing, as it is in 20 pieces or less), but the transformer, aluminum heat sinks, CBM, wire, etc are all in their buckets.
the different brands of tvs would explain y i only got 1 that was glued and had hard resin or plasitc covering it. i dont think the year really matters. i dont like glued ones. any 1 no how much a yoke tipcally weighs? medium to big ones
It varies too much to put a number on it. A normal size CRT, the yoke might weigh 1 pound? Then you take the ferrite and plastic off, which is 3/4 a pound.
The bigger yokes might be around 3 pounds, but still, that means more ferrite, plastic, and glue.
i usually just leave the glue on i get most of it off but some just doesnt come off other times its hard plastic thats on the part with the ferrite. is a 19inch tv a normal size?
I had a couple like that so I took a screwdriver and pried it open using those slots on the yolk
i did that on the one that i couldnt get most of the copper off i just got the first part the copper wraped around the ferrite not the copper around the picture tube.Quote:
Originally Posted by submarinepainter
Don't work on the CRTscreen until you have devacumed it.
Do that with glasses & safety gear & grab the little circut board plugged onto the end of the CRT.
Wiggle it around a bit, if you are lucky you may break the little glass pigtail in the centre of the pins.
When that happens you will hear the air get sucked into the tube.
Once thats finished its safe to work on.
If it dosn't break the pigtail, remove the board & tap the pigtail sideways with a hammer or maybe using a flat screwdriver against the pigtail & tapping it with a hammer.
CRT TV tubes are **** dangerous when they have a vacum in them.
If you don't think so, you haven't had one explode on you yet.
Beings he's a newbee and not real familiar around tv's yet, I don't think it's a real good idea for him to be tapping around on the tube with a hammer, I wish people would quit telling people to bust the tv tubes.
Nothing explodes. It implodes. Completely different.Quote:
Originally Posted by eesakiwi
This subject seems to be the biggest misconception on the board.
This is taken from Wiki,
Implosion
A high vacuum exists within all cathode ray tubes, putting the envelope under relatively high stress. If the outer glass envelope is damaged, the glass will break and pieces will fly out at high speed. While modern cathode ray tubes used in televisions and computer displays have epoxy-bonded face-plates or other measures to prevent shattering of the envelope, CRTs removed from equipment must be handled carefully to avoid personal injury.
Toxicity
Color and monochrome CRTs may contain toxic substances, such as cadmium, in the phosphors.[47][48][49] The rear glass tube of modern CRTs may be made from leaded glass, which represent an environmental hazard if disposed of improperly.[50] By the time personal computers were produced, glass in the front panel (the viewable portion of the CRT) used barium rather than lead, though the rear of the CRT was still produced from leaded glass. Monochrome CRTs typically do not contain enough leaded glass to fail EPA tests.
In October 2001, the United States Environmental Protection Agency created rules stating that CRTs must be brought to special recycling facilities. In November 2002, the EPA began fining companies that disposed of CRTs through landfills or incineration. Regulatory agencies, local and statewide, monitor the disposal of CRTs and other computer equipment.
Told yah.Quote:
Originally Posted by injunjoe
Vacuum implosion = 8 foot radius explosion of finger sized glass shards & a huge mind blowing shockwave.
Devacuum those tubes before even starting to work on one.
Ask a TV repairman if you don't be-leave me, he will describe the heavy full frontal jacket they have to wear while shifting the tube.
I have NEVER had a CRT tube "explode" on me. Just gently tap the skinny glass tube that the yoke slides over and it will break off cleanly and you will hear a hiss or woosh as air is sucked back into the tube. No flying debris ever. To dispose of them I place the whole tube into an old bird feed sack that my father saves for me. Once the tube is in the bag I whack it with a hammer a couple of times and end up with a sack of broken glass. I can sometimes get 3-4 CRT's into one bag all broken up if they are small.
I then tape the bag closed and write "picture tube glass" on it and place it in the curbside recycling can.