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Beosystem 4500 rust!! Dangerous ?

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oim1212
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oim1212 posted on Sun, Oct 25 2020 9:55 PM
So today i bought a Beosystem 4500. Everything looks fine except the beomaster 4500 who looks rusty, it plays well and works. But i wonder is it dangerous to use when rusty or will it be ok. The Beogram 4500 does not play well, maybe because the plug is rusty? Or maybe the pick up needs replacement, is there a way to know if the pick up needs replacement.

And is there a way i can clean the connectors or do i need to replace them?

Thanks

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sonavor
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sonavor replied on Mon, Oct 26 2020 12:23 AM

You have to wonder why the rust is there. Under normal conditions where the audio components are stored in a dry place there would be not rust so I would have to question the environment these components were kept. I recommend removing everything you can, clean all of the rust off the cabinets and metal pieces then repaint them. 

In answer to your question though, the rusty cabinet itself isn't dangerous.

-sonavor

oim1212
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oim1212 replied on Mon, Oct 26 2020 12:50 AM
sonavor:

You have to wonder why the rust is there. Under normal conditions where the audio components are stored in a dry place there would be not rust so I would have to question the environment these components were kept. I recommend removing everything you can, clean all of the rust off the cabinets and metal pieces then repaint them. In answer to your question though, the rusty cabinet itself isn't dangerous.

-sonavor

yes you’re right, it was kept in a shed or something probably. But maybe it helps to remove the rust, what is a effective way of doing this (not only the cabinet but the electronics that may be corroded). I was thinking if the corrosion was going to be a issue in terms of safety on the electronics.
sonavor
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The best way would to disassemble the electronics from the chassis/frame. Take lots of photos so you know how things plugged in. You might label connectors on cables.

on the rusty metal pieces the best thing is to sand away all of the rust then clean it really good to remove any sanding residue. After that paint it to seal it back up. If you want to be really professional you can paint it with primer first.

On small pieces like screws, nuts, washers you can clean them up with something like a rust neutralizer or replace the hardware with new screws.

Inspect all of the electronics. They shouldn't have any rust but might need cleaning with some isopropyl or denatured alcohol. Switches will need cleaning. I would use some Deoxit.

I hope that information helps.

-sonavor

BenSA
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BenSA replied on Mon, Oct 26 2020 6:20 AM

You definitely need to clean it, once clean it should be fine although there does seem to be a black spot on the board, not sure what that is. 

Peter
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Peter replied on Mon, Oct 26 2020 9:29 AM

For all connectors, switches and potentiometers I can honestly recommend Valvoline Contact Cleaner. I have just finished an project with it and all problems have gone.

oim1212
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oim1212 replied on Mon, Oct 26 2020 10:01 AM
Peter:

For all connectors, switches and potentiometers I can honestly recommend Valvoline Contact Cleaner. I have just finished an project with it and all problems have gone.

Okey! How to i clean it without damaging the board?
oim1212
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oim1212 replied on Mon, Oct 26 2020 10:02 AM
sonavor:

The best way would to disassemble the electronics from the chassis/frame. Take lots of photos so you know how things plugged in. You might label connectors on cables. on the rusty metal pieces the best thing is to sand away all of the rust then clean it really good to remove any sanding residue. After that paint it to seal it back up. If you want to be really professional you can paint it with primer first. On small pieces like screws, nuts, washers you can clean them up with something like a rust neutralizer or replace the hardware with new screws. Inspect all of the electronics. They shouldn't have any rust but might need cleaning with some isopropyl or denatured alcohol. Switches will need cleaning. I would use some Deoxit .

I hope that information helps.

-sonavor

Will definitely do it, will let you know how it goes!
oim1212
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Opened it from the top, how do you guys think it looks ? Besides the dirt and webs I seems fine right ?

sonavor
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Yes, the inside looks remarkably good compared to the corrosion on the cabinet and frame. 

-sonavor

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