Ms2930 questions

For monitor related issues
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urbanledge
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Ms2930 questions

Post by urbanledge »

Having a few issues with mine,
I just want to know if they could be related,

First up.
noise coming from the monitor.I think its coming from the deflection coils (i dont know what they do)
side compression,not too bad but its there
and after an hour or so the picture starts to wobble a little and shrinks a bit?

Any ideas?
would a cap kit be worth a shot?

Cheers
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grantspain
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Re: Ms2930 questions

Post by grantspain »

sounds like b+ could be unstable
had the pot cause this on nanao chassis-caps usually are fine with these
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urbanledge
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Re: Ms2930 questions

Post by urbanledge »

Thanks grantspain
what exactly does the b+ do?
iori
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Re: Ms2930 questions

Post by iori »

Hi all,


Grantspain, for MS2930, you mean that capacitor are ok and no need of capkit, but pot need to be changed ?

And what about if we have same issue with MS2931 (little side compression in 15k) ?
Cap kit would fix it ? replace the deflection coils ?

Thanks in advance.
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urbanledge
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Re: Ms2930 questions

Post by urbanledge »

Hi iori,

Is your s making noise too?
iori
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Re: Ms2930 questions

Post by iori »

no noise for me !

but I think you can easily fix the noise with some spray on copper coils.

like explain on this amazing how to :
http://neo.dyndns.tv/technical/monitors/MS-2930-S/"

I'm about to perform this on mine :D
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urbanledge
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Re: Ms2930 questions

Post by urbanledge »

cool,
let me know how it goes
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grantspain
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Re: Ms2930 questions

Post by grantspain »

doubt you will ever fix side compression on 15khz,that is something virtually all multisync monitors suffer from

its something to do with the high voltage cap values in the horizontal deflection circuit
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urbanledge
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Re: Ms2930 questions

Post by urbanledge »

grantspain wrote:doubt you will ever fix side compression on 15khz,that is something virtually all multisync monitors suffer from

its something to do with the high voltage cap values in the horizontal deflection circuit
Thanks
I can live with the compression,

Update on the noisey yoke,

I found a spot on the yoke where if I applied just the right amount of pressure the noise pretty much stopped.
I wedge a bent steel ruler wrapped in insulating tape between that spot and the protective frame of the monitor and its killed 90% of the noise.
I had a few friends over Friday night and it was on for 6 or 7 hours without issue!
No sign of the slight wobble I was getting before.

not ideal solution but its working
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Hewitson
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Re: Ms2930 questions

Post by Hewitson »

You'd probably be better off using a piece of plastic, or possibly putting some silicone or glue on the yoke.A piece of steel might have an effect on the magnetic field.
crunchywasp wrote:During your visit you could reverse his evil honey trap and tell him you're a bit uncertain about spending an hour inside his box
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urbanledge
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Re: Ms2930 questions

Post by urbanledge »

Hewitson wrote:You'd probably be better off using a piece of plastic, or possibly putting some silicone or glue on the yoke.A piece of steel might have an effect on the magnetic field.
yeah never tought of that,

I had the ruler to hand,
might try silicone on it
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