might be bad capacitors. that being said that thing is probably not worth fixing. just my opinion. i used to have a monitor like that. there was nothing wrong with it I just wanted better. This was probably 15 years ago. The CRTs that are more desirable are Trintitrons or Trintitron clones those are just tube monitors.

I have a Dell (Sony) monitor. Put it into storage a year or two, tested it and it went really dim. So the picture is there, but there's no brightness at all. Very capacitor sounding.

However, the case is in such poor condition I don't think there's much to be done with it.

Sounds like the high voltage isn't even firing up, I could be wrong however, as it's been years since I have last fiddled with CRT monitors.

Had a similar issue with an old EIZO - as already stated it may strongly be related to a capacitor issue since the monitor at least "turns on"/green led.

If you're well versed in such things dive in, otherwise get another one. It also strongly depends on the tube's "freshness" if such a repair is a viable option.

It was actually brand new in it's box, just been sitting in storage for 17 years. I finally took it out, it worked for about an hour. It then stopped working and exhibits the behavior in the video. I did take it apart, visually everything looks brand new. I do not see any bad capacitors but I have not tested anything. I never worked on a power supply so I really do not know where to start.

I am aware of the high voltage present, I took the appropriate precautions while looking at the power board. I drained the anode and several large caps, I basically followed the service manual taking it apart.

Sitting for all that time the caps are probably all dried out onside. Caps don't always bulge or pop when they go bad

Vynix wrote:

Sounds like the high voltage isn't even firing up, I could be wrong however, as it's been years since I have last fiddled with CRT monitors.

If you are smoker, you can find out whether it has HV easily by dropping the ash in front of the crt.

Considering it worked for an hour before it stopped producing high voltage (notice the power circuits driving the FBT kicking in and out with the clicking), I'd wager a guess that the caps on the power supply board are goners. Since you haven't got any experience working on this kind of stuff, I personally wouldn't recommend you touch anything in there. I'd probably just get another monitor in this case.

That being said, if you've done a few caps before on other boards and know what to change, it's worth a shot replacing ones that test bad (if you've got the ability to test the caps).

staticelement wrote:

It was actually brand new in it's box, just been sitting in storage for 17 years. I finally took it out, it worked for about an hour. It then stopped working and exhibits the behavior in the video. I did take it apart, visually everything looks brand new. I do not see any bad capacitors but I have not tested anything. I never worked on a power supply so I really do not know where to start.

I am aware of the high voltage present, I took the appropriate precautions while looking at the power board. I drained the anode and several large caps, I basically followed the service manual taking it apart.

That changes a lot - the tube's quasi pristine so it is worth trying to repair it. And yes, the caps wither away with or without use.

Just wanted to say. I replaced the front panel switches on a Sony CPD-100ES a few weeks ago and it was probably one of the most fun projects I've ever done. Easy to take apart. Easy soldering. Just a really super enjoyable project. If this is a capacitor issue it could be a lot of fun to tackle it. I've recapped motherboards and I just as soon remove my eyes with a spoon before ever doing it again... but this? This was fun.