Do you open your CRT and adjust the focus??

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Walleye

Banned
Dec 1, 2002
7,939
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hell.. you could seriously hurt someone with a 9 volt battery if you know what you're doing. one false move may have serious consequences...
 

Eli

Super Moderator | Elite Member
Oct 9, 1999
50,419
8
81
I know that, people. :p Just follow some common sense.

Don't stick your fingers blindly into the innards of your monitor
Don't carelessly move the screwdriver about
Only touch the adjustment screws with your screwdriver
Don't lick contacts like a 9v battery, to see if they "have juice"
Do not pee into your monitor

If anybody dies.. oh well, yuo get teh darwin. :p
 

Miramonti

Lifer
Aug 26, 2000
28,653
100
106
This is what I really need on one of my monitors. :)

I'm going to try it in the next week or so, but first will look for the screws without it plugged in.

Btw do I need a lawyer to write a will?
 

AgentBehemoth

Senior member
Jun 13, 2003
236
0
0
For all those worried about putting a screwdriver in the back of the monitor there are plastic screwdrivers for this type of thing. It's not brain surgery and very easy to do.

 

Linux23

Lifer
Apr 9, 2000
11,374
741
126
Originally posted by: Harvey
Originally posted by: Howard
Use a screwdriver with a long rod, wrap the rod with electrical tape, and you should be ok.
Only if you don't need the screwdriver, anymore. With 25,000 or more volts running around in there, you could zap off the tip of the screwdriver. If you're lucky you won't get a chunk of molton steel in the face.

I've been inside monitors and TV sets. It helps to know what you're doing.

okay, you have officially scared me. how can that energy instantly melt the metal in that screwdriver?

 

Eli

Super Moderator | Elite Member
Oct 9, 1999
50,419
8
81
I've taken my fair share of TVs apart.

I just stick a screwdriver across the terminals of any cap I come across. :p

You get some pretty sparks that way too. ;)
 

Walleye

Banned
Dec 1, 2002
7,939
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Originally posted by: Linux23
Originally posted by: Harvey
Originally posted by: Howard
Use a screwdriver with a long rod, wrap the rod with electrical tape, and you should be ok.
Only if you don't need the screwdriver, anymore. With 25,000 or more volts running around in there, you could zap off the tip of the screwdriver. If you're lucky you won't get a chunk of molton steel in the face.

I've been inside monitors and TV sets. It helps to know what you're doing.

okay, you have officially scared me. how can that energy instantly melt the metal in that screwdriver?

it cant, and you're an idiot for beleiving him :p

alright, maybe not an idiot, but gullible.


it cant instantly melt something. all that electricity has to travel through little tiny wires.. a screwdriver is the equivalent of a 6000 lane freeway.
 

Eli

Super Moderator | Elite Member
Oct 9, 1999
50,419
8
81
Originally posted by: Linux23
Originally posted by: Harvey
Originally posted by: Howard
Use a screwdriver with a long rod, wrap the rod with electrical tape, and you should be ok.
Only if you don't need the screwdriver, anymore. With 25,000 or more volts running around in there, you could zap off the tip of the screwdriver. If you're lucky you won't get a chunk of molton steel in the face.

I've been inside monitors and TV sets. It helps to know what you're doing.

okay, you have officially scared me. how can that energy instantly melt the metal in that screwdriver?
lol, it wouldn't.... he was being a bit dramatic. It may be 25,000 volts, but that doesen't mean sh!t if it's at 0.5 amps(which is a lot @ 25kV)

It *IS* possible to melt tools though, with enough amperage. Try dropping a wrench across a car battery sometime. :Q :p (If you want a darwin, that is).
 

Walleye

Banned
Dec 1, 2002
7,939
0
0
Originally posted by: Eli
Originally posted by: Linux23
Originally posted by: Harvey
Originally posted by: Howard
Use a screwdriver with a long rod, wrap the rod with electrical tape, and you should be ok.
Only if you don't need the screwdriver, anymore. With 25,000 or more volts running around in there, you could zap off the tip of the screwdriver. If you're lucky you won't get a chunk of molton steel in the face.

I've been inside monitors and TV sets. It helps to know what you're doing.

okay, you have officially scared me. how can that energy instantly melt the metal in that screwdriver?
lol, it wouldn't.... he was being a bit dramatic. It may be 25,000 volts, but that doesen't mean sh!t if it's at 0.5 amps(which is a lot @ 25kV)

It *IS* possible to melt tools though, with enough amperage. Try dropping a wrench across a car battery sometime. :Q :p (If you want a darwin, that is).

that'll do wonders for your facial complexion :p
 

CTho9305

Elite Member
Jul 26, 2000
9,214
1
81
I'd do it, but my monitor case is basically one piece in the back, so removing it means no stand, and I"m not exactly comfortable running it like that.
 

aircooled

Lifer
Oct 10, 2000
15,965
1
0
Originally posted by: CTho9305
I'd do it, but my monitor case is basically one piece in the back, so removing it means no stand, and I"m not exactly comfortable running it like that.


thats true, most cases have the stand attached to the bottom of the case and removing would mean having no stand (temporarily).

 

Linux23

Lifer
Apr 9, 2000
11,374
741
126
Originally posted by: Eli
Originally posted by: Linux23
Originally posted by: Harvey
Originally posted by: Howard
Use a screwdriver with a long rod, wrap the rod with electrical tape, and you should be ok.
Only if you don't need the screwdriver, anymore. With 25,000 or more volts running around in there, you could zap off the tip of the screwdriver. If you're lucky you won't get a chunk of molton steel in the face.

I've been inside monitors and TV sets. It helps to know what you're doing.

okay, you have officially scared me. how can that energy instantly melt the metal in that screwdriver?
lol, it wouldn't.... he was being a bit dramatic. It may be 25,000 volts, but that doesen't mean sh!t if it's at 0.5 amps(which is a lot @ 25kV)

It *IS* possible to melt tools though, with enough amperage. Try dropping a wrench across a car battery sometime. :Q :p (If you want a darwin, that is).

the reason i believe him is because my father told me that his screwdriver slipped inside of the CRT monitor, and his screwdriver was all shot to hell.


oh, and i heard that if you touch both the neg and pos terminals of car battery with your hand, you will get a serious surprise.
 

Amused

Elite Member
Apr 14, 2001
57,523
20,165
146
Originally posted by: Goosemaster
Pics?


of the knob i mean....my 19'' Sony 400PS is blurry as hell

I'll give you pics of my knob, sweet cheeks.

;)
 

aircooled

Lifer
Oct 10, 2000
15,965
1
0
Yes it's considered dangerous. I mentioned that from the start. Don't do it if it bothers you.
Otherwise, you can gently remove the back of the monitor case and find the adjusters to correct the picture (if need be).
 

Walleye

Banned
Dec 1, 2002
7,939
0
0
Originally posted by: Linux23
Originally posted by: Eli
Originally posted by: Linux23
Originally posted by: Harvey
Originally posted by: Howard
Use a screwdriver with a long rod, wrap the rod with electrical tape, and you should be ok.
Only if you don't need the screwdriver, anymore. With 25,000 or more volts running around in there, you could zap off the tip of the screwdriver. If you're lucky you won't get a chunk of molton steel in the face.

I've been inside monitors and TV sets. It helps to know what you're doing.

okay, you have officially scared me. how can that energy instantly melt the metal in that screwdriver?
lol, it wouldn't.... he was being a bit dramatic. It may be 25,000 volts, but that doesen't mean sh!t if it's at 0.5 amps(which is a lot @ 25kV)

It *IS* possible to melt tools though, with enough amperage. Try dropping a wrench across a car battery sometime. :Q :p (If you want a darwin, that is).

the reason i believe him is because my father told me that his screwdriver slipped inside of the CRT monitor, and his screwdriver was all shot to hell.


oh, and i heard that if you touch both the neg and pos terminals of car battery with your hand, you will get a serious surprise.


no you wont.

you wont feel the 12 volts.

you need some serious resistance, and a jump, to get the voltage required do a shock.

that's how ignition coils turn 12 volts into 40,000. go ahead, put your hands on the terminals of a battery. i guarantee you wont feel anything. the electricity will be flowing through you, but you wont feel it. so dont worry about it.
 

Eli

Super Moderator | Elite Member
Oct 9, 1999
50,419
8
81
Originally posted by: Linux23
Originally posted by: Eli
Originally posted by: Linux23
Originally posted by: Harvey
Originally posted by: Howard
Use a screwdriver with a long rod, wrap the rod with electrical tape, and you should be ok.
Only if you don't need the screwdriver, anymore. With 25,000 or more volts running around in there, you could zap off the tip of the screwdriver. If you're lucky you won't get a chunk of molton steel in the face.

I've been inside monitors and TV sets. It helps to know what you're doing.

okay, you have officially scared me. how can that energy instantly melt the metal in that screwdriver?
lol, it wouldn't.... he was being a bit dramatic. It may be 25,000 volts, but that doesen't mean sh!t if it's at 0.5 amps(which is a lot @ 25kV)

It *IS* possible to melt tools though, with enough amperage. Try dropping a wrench across a car battery sometime. :Q :p (If you want a darwin, that is).

the reason i believe him is because my father told me that his screwdriver slipped inside of the CRT monitor, and his screwdriver was all shot to hell.


oh, and i heard that if you touch both the neg and pos terminals of car battery with your hand, you will get a serious surprise.
LOL........

I dunno about #1. Whatever, I can't refute it, but it seems unlikely. Multi kV caps don't hold enough amperage to melt screwdrivers unless they are VERY large.

Definately negatory on #2. You can hold the terminals on a car battery all day long and the only thing that will happen is your fingers will get tired. Whoever told you that was an idiot. It's only 3V more than a standard 9V battery. Have you ever been "seriously surprised" by a 9v? :p

Didn't think so.
Originally posted by: Walleye

you need some serious resistance, and a jump, to get the voltage required do a shock.

that's how ignition coils turn 12 volts into 40,000. go ahead, put your hands on the terminals of a battery. i guarantee you wont feel anything. the electricity will be flowing through you, but you wont feel it. so dont worry about it.
How does an ignition coil turn 12v into 40kV again? :p Doesen't have anything to do with resistance. It does have something to do with collapsing magnetic fields, though. ;)

Voltage is like pressure. 12v simply does not exert enough pressure on your skin to pierce its resistance.
 

0roo0roo

No Lifer
Sep 21, 2002
64,795
84
91
power doesn't have to be at melt tools level to killl. low power can be enough to shock your heart outa sync rendering its pumping useless. my sony g400 has no contrast:( bastids.
 

IEatChildren

Senior member
Jul 4, 2003
750
0
0
Technically even 1000 volts isn't dangerous. There aren't enough amps running through there to cause any problems, unless of course you have some sort of heart condition.
 

Black88GTA

Diamond Member
Sep 9, 2003
3,430
0
0
Originally posted by: Eli. Have you ever been "seriously surprised" by a 9v? :p

Heh, not in that sense...but yes. I was using a brand new 9v to polarity test some speakers I was installing in a buddy's car. I finished up, and threw it in my pocket, along with some spare change and some Kleenex. Whoops. About halfway home, I thought my pocket felt hot. Then it felt REALLY hot. I looked down, just in time to see flames come through my pocket. It turns out that the 9v terminals shorted on a quarter, which heated up and eventually caught the Kleenex on fire inside the pocket. The pocket got a fairly decent flame going before I could pull off the road and stop :Q. I was on an expressway with no shoulder for a few miles.

Moral of this story: 9v+quarter+jeans pocket = small fires and a burn mark on your upper thigh :p

Back on topic, I just may try the focus adjustment on an old Compudyne 14" I keep as a spare. That monitor's so blurry it's almost impossible to read at times. Anyone know where you can get those plastic screwdrivers?
 

sharkeeper

Lifer
Jan 13, 2001
10,886
2
0
While acceleration potentials may approach 30kV in displays, the current is rather low. No surprise here. The probability of lasting, damaging physiological effects are low. However, the reaction to the surprise often results in a quick jerk of the involved body part. Since the insides of the chassis are never smooth, flesh is often removed when this happens making the entire experience more memorable.

If you don't feel comfortable doing this, then by all means DON'T!

The most dangerous appliance to work on (assuming a normal household) is the microwave oven. There are potentials that exist that WILL KILL you if contacted.

Cheers!
 

dmcowen674

No Lifer
Oct 13, 1999
54,889
47
91
www.alienbabeltech.com
Originally posted by: SagaLore
I wonder why they don't just put those focus screws on the outside of the monitor... although I do understand why you can't put it into the digital menu because of the physical aspect of it.

There used to be an access hole to make theses "adjustments".

Also common "TV" /TV repair kits contain plastic screwdrivers to make these adjustments.

The only reason this has gone away is for Sales. We've become such a throw away Society it's disgusting.
People throwing away perfectly fine Monitors that simply need a "Fine" adjustment as it it used to be called. Now they are told the Monitor is shot so the Sales Reps can make a new Sale.