Main > Main Forum

Monitor Bezel question...

<< < (3/3)

Fozzy The Bear:

--- Quote from: ZeroPoint on April 25, 2007, 10:43:17 am ---Using magnetic tape will have no influence on the shadowmask inside the crt so long, as I mentioned, you don't stick it directly on the glass.

--- End quote ---

This shows your clear lack of understanding of the technology. It's not a question of influencing the Shadow mask. It's a question of bending the electron beams damaging the gun alignment and permanently burning phosphors.


--- Quote from: ZeroPoint on April 25, 2007, 10:43:17 am ---The hole reason for degaussing a TV is actually to compensate for the earths magnetic field. This field is much stronger than the field of any magnetic tape (at normal distance) I have ever seen.

--- End quote ---

Utter rubbish.... The Gauss of the earths magnetic field is actually relatively weak. Otherwise you'd have bits of metal flying about all over the place and stuck to everything. The localised Gauss Field generated by your magnetic strips is WAY WAY stronger..... Get a Gauss Meter out and test it if you don't believe me. I can tell you now that you'll be registering a background field distortion as much as 6 to 8 feet away from your strips.

Just so that you're clear on this... The reason for Degauss on a TV or Monitor is to localise the monitor,  so that the earths magnetic field (which is significantly weaker than the field from your magnets) does not cause distortion and damage. 


--- Quote from: ZeroPoint on April 25, 2007, 10:43:17 am ---I agree that "strong" magnets can disturbe the magnetic balance inside the crt and do permanent damage. But NO WAY a magnetic tape.  ::)

--- End quote ---

See above, for the explanation as to why you are entirely wrong about that.

You feel free to use your magnetic tape on your monitors if you wish to.... But don't recommend the use of it to people on here who may have no experience of the danger you are putting their equipment in. And that's NOT overstating the case.

I work as senior maintenance engineer, with Arcade Monitors, every single day.... and I can tell you that in some cases even putting another arcade machine in too close a proximity to them can have severe detrimental and permanent effects.

Best Regards,
Julian (Fozzy The Bear)

Level42:
Any "permanent damage" of magnets on CRT TV's/monitors can always be restored using a degaussing coil. No way there is anything going to happen to the phospor layer.....

Talk about "Utter rubbish".......

ZeroPoint:
Thanks...

A very permanent damage is only really made when you actually bend or rip apart the shadowmask. This can be done by using a very large speaker magnet. General magnetic saturations can normally be fixed by degaussing.

And Julian, please... A magnet tape will do no harm to the crt. I have been using 3M 1317 for years. This is stronger than the ones people use normally. I am talking about fixing the bezel to the cabinet and not directly on the monitor. This is done by mounting a flat metal piece to the cabinet and the magnetic tape to the bezel. The bezel sits well and can be easily removed. The flat metal piece will even shield the magnetic field and make it even less "dangerous".

As you say, the electromagnetic field that the monitor generates, can distort another monitor. And magnets should not be used in combination with crts unless they are shielded. But we are talking about fridge magnets or stronger magnets here. There are many magnetic fields in our surroundings that can be measures, but they still wont affect the crt.

Nostalgia...sorry for the hijacking...velcro it is... :applaud:

And Julian...stop insulting people...this is not a competition... :( ...remember that you usually are a nice guy  :laugh2:

Nostalgia:

--- Quote from: ZeroPoint on April 25, 2007, 05:12:18 pm ---Thanks...

A very permanent damage is only really made when you actually bend or rip apart the shadowmask. This can be done by using a very large speaker magnet. General magnetic saturations can normally be fixed by degaussing.

And Julian, please... A magnet tape will do no harm to the crt. I have been using 3M 1317 for years. This is stronger than the ones people use normally. I am talking about fixing the bezel to the cabinet and not directly on the monitor. This is done by mounting a flat metal piece to the cabinet and the magnetic tape to the bezel. The bezel sits well and can be easily removed. The flat metal piece will even shield the magnetic field and make it even less "dangerous".

As you say, the electromagnetic field that the monitor generates, can distort another monitor. And magnets should not be used in combination with crts unless they are shielded. But we are talking about fridge magnets or stronger magnets here. There are many magnetic fields in our surroundings that can be measures, but they still wont affect the crt.

Nostalgia...sorry for the hijacking...velcro it is... :applaud:

And Julian...stop insulting people...this is not a competition... :( ...remember that you usually are a nice guy  :laugh2:

--- End quote ---


Its quite alright. Im gaining knowledge with the conversation, so its all good.  I dont think Julian is insulting, if he says he works with monitors every day, hes obviously passionate about it. He just trying to make a point.  ;)

Fozzy The Bear:

--- Quote from: ZeroPoint on April 25, 2007, 05:12:18 pm ---And Julian...stop insulting people...this is not a competition... :( ...remember that you usually are a nice guy  :laugh2:

--- End quote ---

You're right it's not a competition.... It's about not allowing terrible advice like using magnetic strips to attach a bezel.  As I said, if you want to do it to your monitors, then feel free to do that. But please don't advise other people to damage their monitors.

I didn't insult you.... I'm sorry if you felt insulted. I respect your opinion. The only thing I did was to point out exactly why I think you were wrong.  My experience says don't even think about doing this.


--- Quote from: Level42 on April 25, 2007, 04:14:15 pm ---Any "permanent damage" of magnets on CRT TV's/monitors can always be restored using a degaussing coil. No way there is anything going to happen to the phospor layer.....

Talk about "Utter rubbish".......

--- End quote ---

So what you're saying Level42, is that causing your monitor to run with the guns out of alignment and the beams bent isn't going to permanently burn damage into the phosphor layer and permanently damage the colour capability in selective areas of the monitor after a few months???

You're advocating fixing the problem by using a degauss coil, which won't fix burnt phosphors.

If you don't create the problem by sticking magnets next to the tube in the first place, then it won't need fixing with a degauss coil anyway will it...  ;)


--- Quote from: Nostalgia on April 25, 2007, 05:24:59 pm ---Its quite alright. Im gaining knowledge with the conversation, so its all good.  I dont think Julian is insulting, if he says he works with monitors every day, hes obviously passionate about it. He just trying to make a point.  ;)

--- End quote ---

Thanks... At least the person asking for the advice in the first place understood it. Good choice on the Velcro by the way  :applaud: Many original arcade machines that have service removeable parts like that, use Velcro.

Best Regards,
Julian (Fozzy The Bear)

Navigation

[0] Message Index

[*] Previous page

Go to full version