Looking for replacement lens/box?

[Hndyman55]

Hi there. I have a rebranded Dahua sd-32203-hn-adt. The area around the sd card seems to have fried/corroded also the lens looks like it has a cataract and a cracked glass filter
?




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[Old Timer]

It looks like some of the damage might be water damage.

 

[tibimakai]

That camera still works?

 

[Hndyman55]

Yes i believe it is from water intrusion.
No the lens does not work. However i can still access it from a web browser and use the ptz functions. Just no video. Any idea where to get a replacement?


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[tibimakai]

You will have to clean up that board, ribbon cable, connector. After that, you should somehow neutralize the oxidation, because that will continue to corrode, and the camera eventually will fail. Maybe use some clear coat, or something. I know they sell that green protective liquid, but it escapes the name for it right now.

 

[sebastiantombs]

Regular clear spray lacquer will work fine for a conformal coating. Don't be stingy with it, but don't over do it either. No runs, no drips, no errors.

 

[Hndyman55]

So probably not going to find a replacement? I will try my best to fix it myself. Whats the best way to clean the corroded bits? How about the lens? It appears to be part of an assembly. Also rhe outer glass over the lens?


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[Hndyman55]

What would you call this type of lens? Its not m-12 is it? Would it be called something else?


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[tibimakai]

It is possible, but you will have to measure yours. Can you get to the thread? You would need a caliper for that.

 

[Hndyman55]

I have a caliper. I will have to look closer. I think there is a plastic cover that needs removed that will hopefully reveal more


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[tibimakai]

You should measure the current height, to be easier to set the new lens focus.
12MM= .472 diameter

 

[Hndyman55]

Being that this is a motorized zoom lens…should I be worried about disassembling it.


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[Hndyman55]

Oh well cant get it apart anyways. Will try cleaning everything up best i can


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[Hndyman55]

Oh well cant get it apart anyways. Will try cleaning everything up best i can


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Looks like this is an issue. The copper contacts on the ribbon cable are partly gone. Corroded away.


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[tibimakai]

If the ribbon is long enough, you could cut that part off and use some sand paper, to clean a small strip off from that protective coating.

 

[Hndyman55]

What a great idea! Something so simple. Will try that! Thank you


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[tibimakai]

It will take a while to sand though.

 

[looney2ns]

Caig Deoxit can do wonders in cleaning up corrosion.

Home

CAIG D5S-6-LMH DeoxIT Spray 5 oz. Original CanCAIG DeoxIT is a must have for preserving and lubricating connectors, but also improves conductivity of contacts. If the metal surface is discolored and the corrosion is severe, DeoxIT dissolves the contamination and protects the surface. Not only...

www.parts-express.com

 

[Hndyman55]

Do you think 220 grit will be good?


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[Hndyman55]

Caig Deoxit can do wonders in cleaning up corrosion.

Home

CAIG D5S-6-LMH DeoxIT Spray 5 oz. Original CanCAIG DeoxIT is a must have for preserving and lubricating connectors, but also improves conductivity of contacts. If the metal surface is discolored and the corrosion is severe, DeoxIT dissolves the contamination and protects the surface. Not only...

www.parts-express.com

I should order some of that.


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