My Sony PVM 20m4e arrived today.
Kinda nice suprise as i actually odered a 20m2e
However, aftee turning it on once, i wasnt able to turn it off with the button, but instead had to pull the plug.
As i already touched a wall socket once (220 volts !!!)
When i was 3 and still remember the pain, i wanted to make sure it was safe for me to open it up to fix the button and wanted to know what exactly to do
You are right to be cautious. CRTs can carry a deadly level of charge even after being unplugged for months.
Sadly, I don't have any advice on how to fix. I have a few of the exact same displays, but have only opened it up to adjust the focus (Which is often well worth doing by the way. You may want to do that while you're in there, if required).
Elrinth wrote:Leave the powerbutton ON for a day or so, then the charges should've disappaited. Atleast so said a guy to me who repairs these monitors (20M4E).
I advise against this. Always discharge BOTH the tube and the flyback transformer. To properly discharge the last one, use a 1MΩ resistor or bigger.
It possibly is a toggle switch soldered on to a few points on a PCB. If you're lucky it instead uses a quick detatch cables with molex-style connector, but to tell you'd have to open it up and look (or look at the service manual). Unfortunately, sometimes you need to break down the monitor bezel area a far ways before you can see such things.
In my limited experience, messing around with the power button, especially on a newer PVM model, is quite safe and there's no reason to get into discharging the tube - if you're sure that the bleeder resistor works, and that the power switch is isolated from any HV capacitors. On later monitors things are quite modular and well-connected, so on some models you can literally plug in and unplug some components just as you would an input board. It sounds like you don't have those skills yet, so you might want to shuffle this over to a real repair person, especially if soldering is required and you've never soldered before.
Soldering wouldnt be a problem.
The problem with having it repaired is that i live in very rurql germany and there really is no repair guy for like 180km. :/
We once had our tv repaired by a guy whose hobby it was to repair these, but it was like 5 years ago and he was already over 70
