My friend come over with his monitor and the power switch broke when you press it there is no click sound we wanted to take a look at it but i have heard you can die messing around with a unpluged monitor... Thanks for the help.
After you unplug your monitor how long do you have to wait for it to be safe to work on . I dont want to die.
- Thread starter Renob
- Start date
im not tryin to be a jackass... but if you dont know, then maybe you shouldnt try working on it eh? repairing a monitor is costly anyway, esp if the powersupply is dead... but it could jus be a bad button as unlikely as that is..someone may disagree, but unplug it and wait bout 30 minutes for the capacitors to discharge.. dont wear a static wrist guard, and you should be fine.. but like i said... u might not even want to mess with it.. have phun..
-neural
-neural
Capacitors hold on to an electrical charge for quite some time.
The larger power caps can pack quite a wallop, and if the voltage is backfed through a winding such as the yoke or the step-up transformer, you can be talking about 5000volts if you get it just right.
So after unplugging it you can short any power caps accross the two leads using an insulated plier or something.
Dont work with any parts of your body touching grounded metal surfaces.
Dont get shocked.
The larger power caps can pack quite a wallop, and if the voltage is backfed through a winding such as the yoke or the step-up transformer, you can be talking about 5000volts if you get it just right.
So after unplugging it you can short any power caps accross the two leads using an insulated plier or something.
Dont work with any parts of your body touching grounded metal surfaces.
Dont get shocked.
I don't think it really matters how long you wait. I think there is a capacitor or something inside monitors that holds an extremely high charge (I believe up to a year?). If you want to be safe the capacitor ? needs to be discharged.
Yep, I agree with the last post. The only thing to worry about are the capacitors. Some setups will combine the capacitors with a resistive circuit so they will discharge quickly after you power down, but you can't rely on that.
Like the last post said, you can discharge a capacitor by shorting out the leads with an insulated screwdriver or pliers. You can check if they are charged by using a multimeter across the leads.
If you don't want to discharge them yourself, then wait an hour
. I noticed this to be long enough to discharge capacitors in TVs I've worked on.
Just don;t touvh anything you don't have to
Like the last post said, you can discharge a capacitor by shorting out the leads with an insulated screwdriver or pliers. You can check if they are charged by using a multimeter across the leads.
If you don't want to discharge them yourself, then wait an hour
. I noticed this to be long enough to discharge capacitors in TVs I've worked on. Just don;t touvh anything you don't have to
I've had electricians tell me those caps can hold their charge for weeks. Personally I have my doubts, not that a cap could, but that anything I can afford would have that high quality components inside.
Ground them out or stay away. I don't mind risking my life to save two bucks, but somehow it concerns me when others do!
--Mc
Ground them out or stay away. I don't mind risking my life to save two bucks, but somehow it concerns me when others do!
--Mc
It all depends on teh capacitors. Some will hold a charge for a few minutes, some for days. If you don't know what a capacitor looks like, you're wasting your time opening it and might hurt yourself. You can drain a capacitor of its juice, but once again, it might be best ot just leave it alone
If you cant get a replacement for the power switch, just remove it and connect the two wires that were going to it together with a wirenut or solder and tape. Then you can either turn it on and off by unplugging it or having it connected to a switched plugstrip.
In a monitor the capacitors are not the main problem. The picture tube itself acts like a large capacitor holding the high voltage. The voltage is around 28 KV but is a low current. Nasty shock but probably won't kill you.
Unplug the monitor and leave it unplugged overnight. Do not touch the tube or the red wire that plugs into it and you should be alright.
Do be careful with tools around the tube. You don't want to hit it with anything. It has a vacuum in it and will implode if broken. Normal caution is advised.
Getting the case off can be a problem on some monitors. Check for tabs around the top of the case that have to be depressed.
Note, I'm not advising everyone to go tearing into electronic equipment especially when they don't have any experiance, but the stories of deadly voltage in unplugged monitors is a little overdone.
Unplug the monitor and leave it unplugged overnight. Do not touch the tube or the red wire that plugs into it and you should be alright.
Do be careful with tools around the tube. You don't want to hit it with anything. It has a vacuum in it and will implode if broken. Normal caution is advised.
Getting the case off can be a problem on some monitors. Check for tabs around the top of the case that have to be depressed.
Note, I'm not advising everyone to go tearing into electronic equipment especially when they don't have any experiance, but the stories of deadly voltage in unplugged monitors is a little overdone.
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