Monitor magnetic interference?

[Leif]

I have posted this on a few forums but just trying to see if anyone has ran across this before.

The Details:

I have cab in my game room with a 27" naneo monitor in it.  The house was built in 2002 and is a one story, frame and brick home without a basement... slab foundation, typical Texas home.  The old cab location was on two exterior walls that were brick on the outside, insulated, and sheetrock.  The arcade sat "caddy corner" in that space with no problems.  There are two electrical plugs on each wall 3' from the corner.

I moved the cab 10-12 ft to the opposite corner in the room.  These were two interior walls, non-insulated, sheetrocked, etc.  There are two electrical plugs on each wall 3' from the corner.  On the opposite of one wall is a linen closet and a hallway, the other wall has a guest bedroom in it.  Nothing is plugged in or running anywhere within 10' in any direction.

There are klipsh pro media 2.1 speakers above the monitor.  I have had these installed for a year in the old location with no issues.  When I remove the speakers from the cabinet, the issue does not go away.

The problem:

In the new location, I get some discoloration in my monitor.  I get 2-3" of red at the top and some slight greenish yellow in the bottom inch.  This is when it's caddy corner in the corner of the room.  If I move the cabinet flush against either wall, the problem goes away.  You can actually turn the machine from flat against wall, caddy corner, and flat against the other wall and watch the monitor go from normal to goofy and back to normal.  Like I said above, when caddy corner, the cab sits between two electrical outlets like it did before in the other location.  This occurs when the cab is plugged into any of the plugs.  I have used a degaussing coil with no luck.

Please let me know if you have any suggestions... sorry for the long post, just trying to answer as much as I can.

[grantspain]

nanao should have a manual degauss button in the coin door.
try rotating your cab 90 degree's to see what happens

[paulscade]

I had a similar experience after I moved a TV from one room to another.  I thought that I had broken something... degaussing fixed the problem.

[Leif]

nanao should have a manual degauss button in the coin door.
try rotating your cab 90 degree's to see what happens

Do you know of an owner's manual for nanao monitors?  When I got the cabinet the Jamma harness was stripped from the cab.  The only wiring left to the monitor was the power, RGB and Vsync.

I would also think that the cab would degauss upon power on.   

[grantspain]

all nanao i have worked on are manual pushbutton degauss,you can adapt the nanao to auto degauss.
i have some manuals and schems but i need to know the model number i.e nanao ms8-29su
if the problem is one area only then there must be a very powerful magnetic force close by

[Leif]

all nanao i have worked on are manual pushbutton degauss,you can adapt the nanao to auto degauss.
i have some manuals and schems but i need to know the model number i.e nanao ms8-29su
if the problem is one area only then there must be a very powerful magnetic force close by

Hitatchi tube... flyback and board looks like a nanao ms9-29a-t-su 29".  (indentified by picture verify)

[SirPeale]

If it's not clearing with the built-in degauss, you'll need a manual degauss tool.

It may take a few passes, but should clear that up.

[Leif]

If it's not clearing with the built-in degauss, you'll need a manual degauss tool.

It may take a few passes, but should clear that up.

I'll try a few more passes with the manual degauss.  I couldn't ever seem to find the degauss on the monitor.

Any luck there?

[Orclord]

Amp 15 pin Monitor connector pin-out...

1- Red Video Signal
2 - Green Video Signal
3 - Blue Video Signal
4 - Composite Sync
5 - Ground
6 - Input power
7 - Input Power
8 - Not Used
9 - Degaussing Switch
10 - Degaussing switch
11 - 15 Not used...

[Leif]

Amp 15 pin Monitor connector pin-out...

1- Red Video Signal
2 - Green Video Signal
3 - Blue Video Signal
4 - Composite Sync
5 - Ground
6 - Input power
7 - Input Power
8 - Not Used
9 - Degaussing Switch
10 - Degaussing switch
11 - 15 Not used...

Does this go:

1   2   3  4  5
6   7   8  9 10
11121314 15

or

1   2   3  4  5
10 9   8  7  6
11121314 15

I have two wires that look like that go to a two pin AMP style connector that nothing is connected to.  Is this my degauss?

[Orclord]

Well the 2 connectons should be just along from your power wires with 1 space in between...

I just had the back off of mine to have a look.....

*Warning to others *

 As I took the plug out and picked up the lead the plug swung and hit my other hand.....Ouch....Zzzzap time...

Anyway from the 15 connector on the monitor mine goes to another 15 connector then splits to a 2 way and onto another 2 way then to the demag button......

The schematics just show it from the 15 way on the monitor via 2x2ways to the button....

What colour are the 2 wires ?

[Leif]

Well the 2 connectons should be just along from your power wires with 1 space in between...

I just had the back off of mine to have a look.....

*Warning to others *

 As I took the plug out and picked up the lead the plug swung and hit my other hand.....Ouch....Zzzzap time...

Anyway from the 15 connector on the monitor mine goes to another 15 connector then splits to a 2 way and onto another 2 way then to the demag button......

The schematics just show it from the 15 way on the monitor via 2x2ways to the button....

What colour are the 2 wires ?

I didn't mean for you to get zapped my friend!  Be careful in there... and watch the damn cats too... mine keeps jumping in the damn cab when I have the cover off.  I'm at the office right now, so I'm going off of an old picture but I see the wires in question circled in red.  They're two blue wires that come to a connector that doesn't have a matching end to anything.  I think at one time there was a switch here but nothing when I got the cab.  I just want to double check that this is what it is (all the other wires are accounted for... RGB Vsync, Hsync, and two power wires).

[Orclord]

Well I rewired and made a new connector for mine...because of the video amp I needed...

But when I traced mine out *MY* 2 oranges split at the 2nd 15 way into......


*drum Roll*


2 blues......

And the schematics show them as 2 blues....

Now one further thing to confirm is the power wires and the 2 blues should be the same gauge 20 AWG,whilst the RGB etc should be smaller 22 AWG.....

If you decide to go for it be careful the blues carry 110v and have insulated connectors on the back of my button.....

Do not want you getting a shock now do we.....

 

*Edit*

Just D/L and zoomed the piccy.....That's not a white in between is it ?

They should be next to each other on the same row as the power input

[Leif]

Well I rewired and made a new connector for mine...because of the video amp I needed...

But when I traced mine out *MY* 2 oranges split at the 2nd 15 way into......


*drum Roll*


2 blues......

And the schematics show them as 2 blues....

Now one further thing to confirm is the power wires and the 2 blues should be the same gauge 20 AWG,whilst the RGB etc should be smaller 22 AWG.....

If you decide to go for it be careful the blues carry 110v and have insulated connectors on the back of my button.....

Do not want you getting a shock now do we.....

 

*Edit*

Just D/L and zoomed the piccy.....That's not a white in between is it ?

They should be next to each other on the same row as the power input

I think what you're seeing is a sync wire from the row above.  I'll take a better pic tonight.

So dare I ask how to make this sync if those are the two wires.  Something tells me that shorting them out with a screw driver is not the best way of "making" a connection.   

[Orclord]

Off the top of my head...Unless someone else wants to jump in...

A Momentary action switch which can handle 110V should do it...

[Leif]

Off the top of my head...Unless someone else wants to jump in...

A Momentary action switch which can handle 110V should do it...

Any idea on amperage... I can't seem to find any switches rated at more than 3 amps.   

My screwdriver method sounds much better. 

[Orclord]

Nope.....

I thought about that just after I posted.....

Maybe one of the Monitor Gurus would know.....

To me, in my cab it seems like there's a cap involved or sthg because when you hit the button you get the degauss.....

Wobbly...Wobbly...

And if you hit the button again nothing happens....

If you leave it a while and hit it..... it will Wobbly Wobbly again.....

*Orc using technical terms since 2001*

[Leif]

Nope.....

I thought about that just after I posted.....

Maybe one of the Monitor Gurus would know.....

To me, in my cab it seems like there's a cap involved or sthg because when you hit the button you get the degauss.....

Wobbly...Wobbly...

And if you hit the button again nothing happens....

If you leave it a while and hit it..... it will Wobbly Wobbly again.....

*Orc using technical terms since 2001*

I don't think anyone outside of you or I is reading this thread or using the word "wobbly."

[Orclord]

Well the only thing I can find is the monitor draws 110w...

Which makes a 1 amp switch sufficient....

But that's not to say the degaussing circuit does not draw more....

I really don't know......Me am no arcade monitor guru....I just have one....and play with the twisty/Turny things every now and then.....

[Leif]

Well the only thing I can find is the monitor draws 110w...

Which makes a 1 amp switch sufficient....

But that's not to say the degaussing circuit does not draw more....

I really don't know......Me am no arcade monitor guru....I just have one....and play with the twisty/Turny things every now and then.....

Sweet... I have a few switches that meet that criteria.

I was able to fix the issue with an external degaussing coil and 10... yes 10 passes.  Really odd, I've never had a CRT monitor take more than 2 to fix.

I am going to install the switch this weekend when I get some free time.  I appreciate your help Orc... couldn't have done this without you (since you're the only one I know with the EXACT same monitor.

  Orc

[Orclord]

No prob....

Hope you're still around next week......

 

[Leif]

No prob....

Hope your still around next week......

 

Yea I have a tendency to pop in and out of the websites.  I'll try sticking around this time.

[Orclord]

No prob....

Hope your still around next week......

 

Yea I have a tendency to pop in and out of the websites.  I'll try sticking around this time.

I meant as in living.......

After you wire that switch in..........

 

[Silver]

I meant as in living.......

After you wire that switch in..........

 

 

[Leif]

No prob....

Hope your still around next week......

 

Yea I have a tendency to pop in and out of the websites.  I'll try sticking around this time.

I meant as in living.......

After you wire that switch in..........

 

Quiet funny aren't ya?

hahaha