Tech Support: Safely Discharge CRT Monitor

How to safely discharge a CRT monitor any remaining charge in an old CRT monitor.

[santospoland]

If the bleeder resistor failed or something else is wrong with it, the CRT will not have discharged automatically. Therefore, the discharge procedure is always recommended, bleeder or not. Very good demo.

[asgiov]

when taking the anode cap off, you don't just yank it off like that. you apply pressure sideways and dislodge it at an angle. Basically, pushing one side of the clip on the wall of the hole to close the clip together... It should come off smoothly and easily if you're doing it correctly. This is described in service manuals for CRTs

[brig.]

FYI you want to discharge and then wait several seconds and discharge again, otherwise you might get a shock. I've been shocked a few times the real danger is when you jerk your hand away and get cut on something. When I first started repairing sets I was loading a CRT into the car and got shocked, probably would have dropped it but I had asked my dad to help me and he had a good hold on it. I wasn't wearing any eye protection at the time either.

[oscarkorlowsky]

My dad used to own a repair shop back in the 70's and 80's and he told me that one time he was repairing a TV and he put his arm close to the cable and made an arch and shocked him left him a mark on his arm

[raccoonofthemoon]

Safety first!! I always watch this video before discharging a monitor just to make sure I'm still doing everything right. Didn't have any trouble today either though! I've always found it's easiest to remove the anode cap with the discharge tool: when it's lodged underneath, just a slight bit of leverage will make it pop off.

[royc]

I opened a crt tube when I was 12 yrs old, I got shocked for about 20 seconds while trying to remove that plug looking thing with a normal flat-head screw driver, I felt dizzy after and had to sit down, I believe that is the cause of my loss of long term memory lol luckily I didn't die.

[elpablo]

I like how the guy is instructing you on the procedure but you can tell it is the first time he has ever done it lol

[brig.]

Picture can sometimes hold a charge for some time after you unplug the set. Connect the ground clip to that silver strap around the picture tube. Discharge the tube...wait several seconds and discharge it again.

[Jenny_Digital]

Don't forget the massive reservoir caps populating the power supply stage. Most modern equipment these days use a switch mode design that starts with rectifying the mains and shoving it into a big meaty CAPACITOR!

[timothylegg]

I have seen these creep back up in voltage since there is high enough of an ESR that the more distant charges creep to the terminal. Certainly not as high as before, but you could feel it. I've managed to be quite paranoid with these things. Never been shocked.

[Jenny_Digital]

...Oh and did I mention that the bleed resistor should never be trusted?

[doctorhino]

Was watching a video about modding a tv and they mentioned draining the voltage. Good thing I wasn't stupid and tried to take anything like this apart when I was a kid.

[Sparky]

define modernday. like 2005? 2000? 1990?

[npcDroneClass]

Attention everyone! Use a chicken stick!!! You all need to be aware of the rise in "regular joes" such as myself and your own selves... attempting to open, discharge and work on CRTs. There is a CRAZE going on in North America regarding RGB modding for classic console gaming (RGB gives the best picture and requies modifications to work on NA TVs). I highly advise you all NOT to do the screw driver trick by hand. Attach it to a non-conductive stick (we call it a chicken stick because we're too chicken to do it by hand). It's a lot safer, you can do it from a distance, HECK you can even put your multimeter on there to make sure it's fully discharged. These tubes have a bad habit of recharging themselves, so you may want to keep poking at the hole with your chicken stick from time to time, just until you've disconnected the board, and again when you're going to reinstall it. Happy modding everyone! Post your vids if you're doing RGB mods!

[thedillestweed]

1:41-1:51 When your employer asks you how good you are at what you do.

[electrictnt]

Before I knew anything about how these work, I was being a dumbass trying to cut the wire that goes up into the tube and I kept on getting shocked.

[cyberwolfe]

1:41 - Is that one of those "CHILD PROOF ANODE CAPS"? Because it appears to be doing it's job. ✔

[SpecialAgentOso]

Has there ever been a case where there's no click while discharging, but the tube still holds a charge? (accidents?)

[blackhossproductions]

How is the chassis grounded if you’ve already unplugged it?

[LodestarDriver]

What's the discharge tool called so I can buy one?