cypher7194
Member
So i have got this old 17/18 inch crt monitor siting around, so i was wondering if monitors have any scrap value or if its just better to try and sell them on craigslist or eBay for like 10-20 dollars. Thanks again!
computer moniters
- Thread starter cypher7194
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JustinNH
Well-known member
wish we could sell those around here for that much... most people have to pay people to take them away as they have too much haz mat in them according to the city and can;t go out with the garbage. They do have lots of lead and copper in them, but most people agree they arent worth the time to get any of the PM.
Gotrek
Well-known member
Most recyclers charge YOU for diposing of them. I repair TV's/Monitors but if you don't have the knowledge to properly dissasemble one leave it alone it can kill you.
I'm sure the lead is worth recovering but If I recall you need to grind it off the back of the tube, It makes tons of dust and will probably end up killing you.
Apart from that the next best thing in them is probably the copper.
I'm sure the lead is worth recovering but If I recall you need to grind it off the back of the tube, It makes tons of dust and will probably end up killing you.
Apart from that the next best thing in them is probably the copper.
Gotrek
Well-known member
banjags said:
The flyback assmebly (the large coil that goes to the back of the tube yes) Did they announce the date yet I'm going to go dump a bunch of old stuff?
Any capacitor can hold a charge so watch the bigger capacitors on the power supply as well.
Gotrek
Well-known member
banjags said:
They never have any drop offs on my side of the city
Gotrek
Well-known member
It's too far if I have to cross a bridge
Scott2357
Well-known member
CRT anode discharge is not necessary as long as it's been powered off and unplugged for a few hours AND you don't remove/cut the big red anode wire. Discharging is far more dangerous than just leaving it alone. Even discharged, the CRT acts like a large capacitor and recharges itself somewhat over time. The anode wire provides a way for the voltage to bleed off (leak out) if left connected. I've not seen any PMs in the main boards and only a very small amount in the video amp and some connectors that carry the video signal. Even without the risk it's not worth the trouble in my opinion.
Gotrek
Well-known member
Scott2357 said:
I disagree, if you are removing anything that is on the board with the flyback capacitor you should discharge the tube.
Scott2357
Well-known member
In modern computer monitors (~1980 and beyond) the flyback capacitor is in the flyback module which also has a circuit to bleed off the voltage when not in use. The open frame flyback transformer circuit used in TVs until about 15 years ago was different.
cypher7194
Member
Alright so ill just see if i can sell it, a couple bucks isn't worth dieing for. If i cant ill just donate it. Thanks everyone!
A
Anonymous
Guest
We strip the monitors out that we take in and strip large quantities of Aluminum heat sinks from the boards avaerage about 5 lbs of Aluminum from each of them. We also pull the copper from the monitor cone and the degauzing cables. we get about 5 lb.s there also. Then strip out all the insulated wires and add those to another pile. The boards have some small flat packs so we also pull those. The CRT's go in the e recycle the plastics go back to the scrap source they have a buyer for those.
WIth the whole world going crazy for flat screen LCD's there are a lot of old crt monitors coming available.
WIth the whole world going crazy for flat screen LCD's there are a lot of old crt monitors coming available.
The lead is actually lead oxide disolved in the glass. The lead is recovered by lead smelters who use the glass for flux.
As an idle thought I once wondered if it would be possible to do a thermite reaction on the lead oxide in the glass, so I googled it and found
a research team who had tried just that. It reduced the lead, but it wouldn't aglomerate and it stayed trapped as tiny beads in the glass.
As an idle thought I once wondered if it would be possible to do a thermite reaction on the lead oxide in the glass, so I googled it and found
a research team who had tried just that. It reduced the lead, but it wouldn't aglomerate and it stayed trapped as tiny beads in the glass.
Gotrek said:
Rag and Bone
Well-known member
5 pounds of copper and aluminum average. How does that work? Are you scrapping Soviet chimp-rocket monitors or what?
Rag and Bone said:
Yah, I've NEVER seen that much AL in a monitor. 2 pounds of Copper tops is what I've found. And that includes pulling the transformers apart to separate the copper wire from them.
If you're getting HALF a pound of Al from a monitor you're doing great.
There's about a pound of steel (light iron to the yards) in a monitor if it has a complete shielding cage.
Next Monitor I pull apart, maybe I'll do a weight analysis of what I pull out. I'm getting some this Monday, and I'll grab an average looking one....
Mike B
A
Anonymous
Guest
That is a lot of copper, I removed the copper from 10 1 hp to 3 hp motors and only had 33 lbs.
Jim
Jim
17 inch trinitron--
all the copper from the tube cone, board transformers, basically any un-insulated-wound copper wire cleaned and weighed.
Came in at just over 20 oz.. now that doesn't include the power/vga cable, and any small insulated wires. And that Flyback Tfmr , or whatever it is looks too tough and time consuming to tackle.
im new to all this but 5lb's seemed a little high, what about those old cabinet tv's ?
all the copper from the tube cone, board transformers, basically any un-insulated-wound copper wire cleaned and weighed.
Came in at just over 20 oz.. now that doesn't include the power/vga cable, and any small insulated wires. And that Flyback Tfmr , or whatever it is looks too tough and time consuming to tackle.
im new to all this but 5lb's seemed a little high, what about those old cabinet tv's ?
