Magnetisim on my walls?

[Denverlatino]

Have anyone had this problem? i have a cocktail pac cab that when i turn the thing on if is close to the wall the screen turns red, but at the middle of the room game looks OK, could it be i got magnetism on my walls, Cu's as far as i see there are not magnets or anything that can cause magnetism on my room, anyone as a similar problem? 

[BASS!]

I could think of a couple things.

It could  be a wall heater ( unshielded motor for the blower)

Speakers in the next room or above/ below you. Some magnets are beefy and can affect things a long distance away.

Is there by chance a computer very close? I have had hard drives mess with a monitor before (they do have magnets in them).

em interference - It could be some component that is sensetive to electromagnetic or just electrical interference. My neighbor is an electrical engineer and has spent his whole life inventing things to help electricians and technicians track down interference in houses and power lines. If it is this then you are S.O.L:-(

Have you tried moving it from one wall to another?

Is it everywhere?

Final question: what is the surface that you have it set on like? Is there any dips in the floor to put the monitor at a different angle (other then flat) ?

[qrz]

pse post pics if able .  might give us a better idea of what is happening.

qrz

[Denverlatino]

More than a problem i posted this as something weird, cus it never happened too me before, but ill will pos pics , theres no pc on the rom, or speakers dont know what S.o.l. means  so maybe the electrical installation its making interference cus like i stated before, game looks good at the middle of the rom, but once i get it close to the walls , bang, maze turns red. Ill see if i can post a short vid so you guys can take the whole picture of it. thanks allot for reading. 

[qrz]

sol = "poop" out of luck

years ago had a customer with a similar problem . but, couldn't find anything wrong with their comp monitor .
finally got them to try another monitor in the same location .... same symptom on 2 diff models/mfgr.

later, an electrician found a corroded junction box behind the wall .  when he replaced the box and repaired the wiring...
customer said the problem had vanished ...

might try a portable AM radio tuned to the low end of the band along that wall. see if u get a strong buzz (60hz)
near the loacation......

qrz

[Denverlatino]

sol = "poop" out of luck

years ago had a customer with a similar problem . but, couldn't find anything wrong with their comp monitor .
finally got them to try another monitor in the same location .... same symptom on 2 diff models/mfgr.

later, an electrician found a corroded junction box behind the wall .  when he replaced the box and repaired the wiring...
customer said the problem had vanished ...

might try a portable AM radio tuned to the low end of the band along that wall. see if u get a strong buzz (60hz)
near the loacation......

qrz

things are very old on this house, so i bet that might be it. And thanks for the poop xplanation   

[Rickn]

No Corroded electrical box... not the problem.

A few things, a cocktail game has the tube facing the ceiling. If when it was built the manufacturer did not know, he would have set it up in typical TV orientation.

The tube is affected by the earth's magnetic field, if the tube was set up in TV orientation it will tend to be less than forgiving with being placed in cocktail table orientation.

if you turn it different directions such as east vs north again, different re-actions. Each time you move this it will need to be degaussed either manualy or thru the internal monitor degausser.

As you are in an old house highly unlikely there is a huge steel beem near by.

So the maze turns red?? is this a purity problem or a problem related to the video output transistors.

Any chance you have the ability to display flat colored raster... in other words completely red screen, blue and green.. for this you likely need a generator??

If so a few pictures will tell a lot... if you do either pm me with them or send them to Rick@niemandisplays.com

[SavannahLion]

You know, if he's got water pipes in those walls and it's an old house, those water pipes are probably being used as a ground return. Even if they're not being used as such, he likely lives in an old neighborhood which means someone else, like his next door neighbor, might be wired as such and it's affecting his plumbing and wiring.

[FrizzleFried]

When you move it from the wall,  are you turning the orientation of the cab or simply pulling the cab away from the wall facing the same direction?   If you are turning the cab,  the problem is the Earths magnetic poles.  I have a Centipede cab that will NOT degauss facing West or South but turn it North or East and it's fine.

[Denverlatino]

You know, if he's got water pipes in those walls and it's an old house, those water pipes are probably being used as a ground return. Even if they're not being used as such, he likely lives in an old neighborhood which means someone else, like his next door neighbor, might be wired as such and it's affecting his plumbing and wiring.

most houses here use the pipe ground thing you are talking about, i dont think its an earth's magnetic field issue since it dosnt matter how ill put the cab the maze starts to look red at some point near the walls , but if its not near the walls you can turn the cab 360 and picture looks great, gosh, i wish i had my cell cam right now, 

[SavannahLion]

You know, if he's got water pipes in those walls and it's an old house, those water pipes are probably being used as a ground return. Even if they're not being used as such, he likely lives in an old neighborhood which means someone else, like his next door neighbor, might be wired as such and it's affecting his plumbing and wiring.

most houses here use the pipe ground thing you are talking about, i dont think its an earth's magnetic field issue since it dosnt matter how ill put the cab the maze starts to look red at some point near the walls , but if its not near the walls you can turn the cab 360 and picture looks great, gosh, i wish i had my cell cam right now, 

I'm not exactly talking about the Earth's magnetic field.

What happens is that the pipes (and sometimes electrical conduit) become a conducting magnet even though it's supposed to be grounded in Earth. There's an entire unpopulated town somewhere in the U.S. where they study things like this. To take an example. You have two old houses side by side, when someone runs a blender in one house it's possible that a particular wiring/grounding combination can cause a magnetic field to be generated in the next house. Your refrigerator can generate a magnetic field in the next room or three houses down.

In addition to that. Interesting things start to happen when well meaning home owners (or cheap ass landlords) make repairs to areas of a home that aren't up to code.