Monitor picture "feathers' occationally.. wiggling fixes it ...? help me look inside

[Noid]

NEC MultiSync FP950 - (refurb)

I got something loose inside the monitor thats making my picture 'bleed' or 'feather' off of images displayed twards the right.

If I move the monitor on it's pedestal ,,, it's flickers,, and goes away if I wiggle until it's gone...

I'm wondering if it's OK to go inside and take a look around for loose connnections.

Are there any precautions I need to take before I do ...?

I really dont have the money to have someone look at it.

Any input or experience will be welcomed....

 

[Zim Hosein]

I'm wondering if it's OK to go inside and take a look around for loose connnections.

Absolutely not, even unplugged, a monitor has enough charge to kill you!

 

[Noid]

lol ... thats the same type of reply when I needed to fix my Enermax PS.

(which I was able to work on)

 

[Keysplayr]

DO NOT TOUCH THE FLYBACK CAPACITOR!!!!!!!!! It's nicknamed "FlyBack" for a reason. It stores a ton of electricity to assist the monitor in starting up and not pull so many AMPS from your A/C lines. If you touch it the wrong way, you will fly backwards and hit the opposing wall in your house. Hence the name flyback. I dont know its true name but its a huge capacitor that all CRT's have.

Use CAUTION!!..

You dont want to get nailed with that.

Keys

 

[modedepe]

Well if you let it sit unplugged long enough the cap would discharge.

 

[Zephyr106]

Originally posted by: modedepe
Well if you let it sit unplugged long enough the cap would discharge.

I'm curious what time frame is required for it to be at safe levels. I don't think I'd bet my life without knowing for sure.

Zephyr

 

[vshah]

yeah... i wouldn't open it...we ripped an old, broken 21 inch a couple weeks ago...it was fine till we opened the tube, then a whole lot of crazy gas shot out...nothing happened though, but still i'd be careful.
aaahhh college life

-Vivan

 

[Bucksnort]

20,000 volts get your attention? Discharge times vary. May take weeks or more. Don't mess with it. Take it to a experienced repair center.

 

[Viper96720]

Unplug then discharge the tube just get a screw driver that's insulated plastic or rubber handled. Get a wire with alligator clips on each end clip one to the ground the other to the metal
of the screw driver. Then carefully poke the screwdriver under the suction cup at the top it should make a pop when contact is made.

 

[ThunderbirdElitist]

Originally posted by: vshah
yeah... i wouldn't open it...we ripped an old, broken 21 inch a couple weeks ago...it was fine till we opened the tube, then a whole lot of crazy gas shot out...nothing happened though, but still i'd be careful.
aaahhh college life

-Vivan

More like shot in, they are under a vacuum.

 

[sodcha0s]

Just use a voltmeter across the capacitor. You will then know what it's charge is, and it will bleed down quicker with the meter on it. Or you can clip a resistor across it for a while.

 

[ThunderbirdElitist]

Originally posted by: sodcha0s
Just use a voltmeter across the capacitor. You will then know what it's charge is, and it will bleed down quicker with the meter on it. Or you can clip a resistor across it for a while.

DO NOT DO THIS. The voltage inside the CRT itself is high enough to arc to your hands if you go anywhere near it. (You never know how good the boot is, could have a tiny fissure int it) It needs to be disharged with a high voltage probe. I am not going to tell you the good ole boy way since it's to dangerous for someone without basic electronics theory. use only your right hand to mess with it and keep your left hand behind you back, that will minimize the chance of stopping your heart in the even of an accident.


I was with a guy who tried the good ole boy way once and the powerstrip the monitor was plugged in to wasn't grounded good and he had the alligator clip on the monitor chassis. I will never get the image of that bastard flying 12 feet back into a display case.

Please be careful. Most likely if there is feathering in the picture it is a component dieing on the control board. The best way to find it is with tapping with an insulated probe or freeze spray for thermal probs. IMHO it's not worth it when you can get 17" monitors for sub $100 these days.

 

[Noid]

hmmm .. well . I guess I can just keep wiggling the monitor, until that doesnt work anymore...

This is NOT a cheap monitor,,, btw

thanks for the replies...

Just a lil story also ,,, I do know what it's like to be zapped...

When I was a toddler .. I stuck a safety pin in a wall outlet once ...
(I was knocked back a couple feet)

I know where my electronics interest came from ...