WG D9800 - Severe discoloration, degausser doesn't degauss

[Applekid]

Hello,
  I just powered up a WG D9800 from storage and I expected some discoloration, but evidently it's so severe that the build in degaussing function doesn't work.

  Is there anything I can do? I'm considering getting a proper hoop degaussing coil but I don't know if the discoloration is so bad that it won't ever recover, especially when the built-in degausser (from the OSD) doesn't seem to correct anything. Is it possible that it could be permanently magnetized?

  These pictures are supposed to be pure red / green / blue, and this is right after I use the build in degausser. I do, in fact, hear a relay and see wacky colors and distortion during the process, but it doesn't really seem to be cleaning up the colors.

  If there's any advice I'd really appreciate it. This monitor was the last purchase I made before I had some major health stresses that I've finally broken through so I'm finally trying to put everything together and I'm pretty bummed out.

[mgb]

First verify that the degaussing coil is plugged in. It has a plug that plugs into the chassis board.

It's definitely worth it to get a degaussing coil for manual degaussing.

I use an old radio shack bulk tape eraser that I picked up on Craigslist for $10. Works great

[grantspain]

the degauss on all the digital wg chassis are pretty poor,check no magnetic sources are nearby(like ballasts or speakers) then next step is manual degauss wand like mentioned

[Applekid]

Thanks for the help, gonna go pick a coil up. I'm pretty glad no one has said "wow, I've never seen discoloration so bad, it's not fixable" 

[mgb]

I just re-read your post and see that your built in degaussing is working.
Keep in mind like grantspain said, make sure there is nothing nearby the monitor that could be causing the problem because it is possible that the builtin degaussing is doing its job but then there is still something nearby causing the interference

[sandheaver]

I'm pretty glad no one has said "wow, I've never seen discoloration so bad, it's not fixable" 

I've seen monitors where the internal shadow mask grille has been dislodged and/or bent via rough handling or being dropped.  The symptoms look a lot like this and degaussing does nothing at all to solve it.

If a manual degauss does not remedy the color issues it is time to start worrying, I think.

[Applekid]

I just re-read your post and see that your built in degaussing is working.
Keep in mind like grantspain said, make sure there is nothing nearby the monitor that could be causing the problem because it is possible that the builtin degaussing is doing its job but then there is still something nearby causing the interference

Definitely can confirm no nearby magnets. I've got it set on a sheet of thick cardboard on my floor, no speakers in sight.

I'm pretty glad no one has said "wow, I've never seen discoloration so bad, it's not fixable" 

I've seen monitors where the internal shadow mask grille has been dislodged and/or bent via rough handling or being dropped.  The symptoms look a lot like this and degaussing does nothing at all to solve it.

If a manual degauss does not remedy the color issues it is time to start worrying, I think.

No one knew what I was talking about at Radio Shack or the hardware store, so I ordered one. I guess I'll find out in a few days.

If the internal shadow mask is dislodged, what do you suppose my options are? Would it be a complete loss? I was really excited to have a VGA ready functioning triple-scan monitor. 

[sandheaver]

No one knew what I was talking about at Radio Shack or the hardware store, so I ordered one. I guess I'll find out in a few days.

If the internal shadow mask is dislodged, what do you suppose my options are? Would it be a complete loss? I was really excited to have a VGA ready functioning triple-scan monitor. 

New (to you) tube.  They're pretty easy to come by, depending on the monitor in question.  (Some tubes are rarer.)  If you're very lucky there may be some old wizard who still runs a TV repair shop nearby, who has tube re-phosphor gear.  Apparently they're around but I've never even heard of one near me, and I'm near two very large cities.

Such folks can actually disassemble a tube by taking the front glass off, cleaning the old phosphor application off, applying a new phosphor coating, fixing/replacing the shadow screen, putting it all back together, drawing a perfect vacuum again, and getting it working again.  Basically a full tube reman.  It would very likely be cheaper to simply replace the tube, but if you had a very rare tube with burn-in, this is how you'd fix the burn-in without replacing the tube.

Before anyone challenges me, I read about those folks on this board a few days ago.  Apparently they exist, but no one seems to know who any of them are.  Maybe they don't exist anymore.

[mgb]

I just re-read your post and see that your built in degaussing is working.
Keep in mind like grantspain said, make sure there is nothing nearby the monitor that could be causing the problem because it is possible that the builtin degaussing is doing its job but then there is still something nearby causing the interference

Definitely can confirm no nearby magnets. I've got it set on a sheet of thick cardboard on my floor, no speakers in sight.

I'm pretty glad no one has said "wow, I've never seen discoloration so bad, it's not fixable" 

I've seen monitors where the internal shadow mask grille has been dislodged and/or bent via rough handling or being dropped.  The symptoms look a lot like this and degaussing does nothing at all to solve it.

If a manual degauss does not remedy the color issues it is time to start worrying, I think.

No one knew what I was talking about at Radio Shack or the hardware store, so I ordered one. I guess I'll find out in a few days.

If the internal shadow mask is dislodged, what do you suppose my options are? Would it be a complete loss? I was really excited to have a VGA ready functioning triple-scan monitor. 

Yeah I should of mentioned, bulk tape erasers and the like aren't readily available at stores. I bought my bulk tape eraser from someone on Craigslist.

I wouldn't go worrying about issues within the tube until after degaussing with a coil properly and then see what it looks like.
I would also get it off the floor and up on a table or something.

[grantspain]

rotate the whole monitor 45 degree's whilst powered on to see if it affects the picture

[dgame]

Thanks for the help, gonna go pick a coil up. I'm pretty glad no one has said "wow, I've never seen discoloration so bad, it's not fixable" 

I've seen similar http://forum.arcadecontrols.com/index.php?topic=102677.0. The external degauss coil should clear that up.

[Applekid]

Well, degaussing coil arrived today. Tried it out closely to this video except the coil was considerably bigger. It definitely made trippy shapes far stronger than the built in degausser.

At first it looked like it was going to work as I saw the splotches rotate through the right colors but as I backed away while rotating, the same discoloration in the same spots came back.

Considering there are zero of these monitors left in the hands of anyone that doesn't want it, I can pretty much count out ever being able to get a tube replacement. Thanks to everyone for your help, but, I guess my adventure ends here.

[dgame]

I used the degaussing coil a little different than in that video. Move a lot faster. The  'wax-on circle' is the move shown in the video:

...
What I do is stand about seven feet away from the screen with the coil parallel and centered. Press the button. Walk to within inches of the screen while moving the coil in a wax-on circle and then back away from the screen while doing the same circular motion. Once back in original spot release the button. About 10 seconds from press the button until release the button.

[Applekid]

I used the degaussing coil a little different than in that video. Move a lot faster. The  'wax-on circle' is the move shown in the video:

...
What I do is stand about seven feet away from the screen with the coil parallel and centered. Press the button. Walk to within inches of the screen while moving the coil in a wax-on circle and then back away from the screen while doing the same circular motion. Once back in original spot release the button. About 10 seconds from press the button until release the button.

Is it possible to harm the monitor trying over and over? This coil came with instructions that say I need to give it a 30 minute rest between 1 minute (max) uses, but I don't know if there's other stuff that can happen if I keep doing this in slightly different ways until I get it right.

Although, with tube repair shops gone the way of the dodo, I'm not really out anything additional. 

[mgb]

the limits on the coil are so the coil doesn't burn out.

did you also try moving the monitor to a different location than on the floor?

remember that degaussing should be quick, the whole thing should be about 5 seconds

[sandheaver]

... phosphor screen is dislodged ...

[Applekid]

the limits on the coil are so the coil doesn't burn out.

did you also try moving the monitor to a different location than on the floor?

remember that degaussing should be quick, the whole thing should be about 5 seconds

Yep, wound up rotating it 135 degrees and it's now about 4 feet off the ground. The splotches changed shape somewhat but they don't look any better from the pictures. As for degaussing, tried it fast, tried it slow, walked up to it from afar and back, stared close and walked back, story is the same. I'm just hosed. 

[grantspain]

disconnect the degauss coil from the chassis and try it
degauss wand in a circular action from centre in increasing size whilst moving away

i had big bucks hunter dropped on its front not too long ago which must have damaged the shadow mask,to fix this i had to glue a pretty strong magnet to the side of the crt

[Applekid]

disconnect the degauss coil from the chassis and try it
degauss wand in a circular action from centre in increasing size whilst moving away

i had big bucks hunter dropped on its front not too long ago which must have damaged the shadow mask,to fix this i had to glue a pretty strong magnet to the side of the crt

Gluing magnets? You mean glue to the sides of the tube? (I figure magnets would stick to the chassis pretty easily) Any guides for this? I've been playing with the monitor in the meantime to get used to tweaking MAME video settings and interacting with it as-is until hell freezes over and I find another tri-scan monitor in the same size, and it'd be great to at least get it to a place that I don't get pissed off looking at it. lol

I don't really know how it got dropped since I just pulled it out of the box maybe 3 weeks ago, but I gotta figure dropping on the face is pretty severe

[ed12]

same idea dif approach
take any old hard drive laying around that is junk
remove the gut's
get to the magnet at the bottom or top which ever
it is a prem mag
cut it in half
tape to the side,once u have slid it around to take out the problem..ie purity
the reason u cut it in half is because they are very very strong magnet's
and u just do not need that much
but u may need to do more then 1 corner,side
use hospitial white tape,hold's forever..as a rule i put them
just after the band but before the face of the crt

ed

[Applekid]

same idea dif approach
take any old hard drive laying around that is junk
remove the gut's
get to the magnet at the bottom or top which ever
it is a prem mag
cut it in half
tape to the side,once u have slid it around to take out the problem..ie purity
the reason u cut it in half is because they are very very strong magnet's
and u just do not need that much
but u may need to do more then 1 corner,side
use hospitial white tape,hold's forever..as a rule i put them
just after the band but before the face of the crt

ed

Well, hard drive magnet was definitely way too strong to keep attached. I wasn't able to actually cut it in half but merely approaching it really started some color patterns so I backed off. I took a fridge magnet instead and noticed that while I was trying to adjust it for a permanent location, the fixes to the discoloration actually stayed put! Disconnected the automatic degaussing cable to keep it from undoing the "paint" work.

I've got a strange geometry issue in the upper right now, but at least it's not wildly tinting everything and I'll take a slight bowing at the corner over the alternative. There's also a slightly more subtle geometry issue that is seen when games have scrolling screens. It kind of looks like a really wide ripple, like a wrinkle, which I'm guessing is consistent with a grille being dislodged.

But it looks way better than before and definitely within a playable tolerance so, hooray! Thanksssss!