Power Supply Unit
- etiennel22
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Power Supply Unit
Good day,
Hope anyone can help me.
Does anyone know what this brown round thing is? after some googling I think it is a fuse.
It is from a 12VDC 3,2A UPS Power Supply Unit.
Thank you
Regards
Hope anyone can help me.
Does anyone know what this brown round thing is? after some googling I think it is a fuse.
It is from a 12VDC 3,2A UPS Power Supply Unit.
Thank you
Regards
- ChrisF
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Re: Power Supply Unit
do you have a photo from a different angle ?
typically capacitors that release smoke .....
but I dont see any "farad" value .... but then again very often components on commercial pc-boards dont display all info ...
typically capacitors that release smoke .....
but I dont see any "farad" value .... but then again very often components on commercial pc-boards dont display all info ...
- etiennel22
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Re: Power Supply Unit
I will upload another photo tonight.
But from what I can gather it might be this, http://za.rs-online.com/web/p/products/2260967/" onclick="window.open(this.href);return false;
But from what I can gather it might be this, http://za.rs-online.com/web/p/products/2260967/" onclick="window.open(this.href);return false;
- Family_Dog
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Re: Power Supply Unit
How many wires from it? You'll have to look at the other side of the PCB for that. It looks more like a full-wave bridge rectifier to me, so will probably have four equidistant leads.
Whatever, it certainly looks like it is now "fused".
Edit: Aah, might be a Wickmann fuse!
-F_D
Whatever, it certainly looks like it is now "fused".
Edit: Aah, might be a Wickmann fuse!
-F_D
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- Stef
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Re: Power Supply Unit
Looks like a fuse yes. Cylindrical (electrolytic) caps are normally used in power supplies are usually marked clearly ito Polarity as well and bulges at the top when blown.
- etiennel22
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Re: Power Supply Unit
There is 2 wires from it going into the PCBFamily_Dog wrote:How many wires from it? You'll have to look at the other side of the PCB for that. It looks more like a full-wave bridge rectifier to me, so will probably have four equidistant leads.
Whatever, it certainly looks like it is now "fused".
Edit: Aah, might be a Wickmann fuse!
-F_D
- Jaws
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Re: Power Supply Unit
You are correct it's a
Bussmann fuse
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Bussmann fuse
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- etiennel22
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Re: Power Supply Unit
So can I buy a new one and just replace it?
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- ChrisF
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Re: Power Supply Unit
buy a couple ..... the fuse is not the problem - just an indicator of the actual over current .....
- Stef
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Re: Power Supply Unit
+1 Replace and switch on without load, if it blows again there is a short/faulty component on the board.
- etiennel22
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Re: Power Supply Unit
Thank you, will give it a tryStef wrote:+1 Replace and switch on without load, if it blows again there is a short/faulty component on the board.
- etiennel22
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Re: Power Supply Unit
Got the replacement fuses. But as soon as I plug in the unit it blows again. So I guess there is something else wrong.
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- Stef
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Re: Power Supply Unit
Sounds like you have a dead short somewhere between L -N.
- etiennel22
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- Stef
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Re: Power Supply Unit
Easiest is to measure with a multi-meter to see if that is the case...then follow the actual tracks on the back to see if there is any obvious shorts like a piece of wire/solder or maybe against the enclosure when assembled etc.
With that eliminated, check the major components one by one
With that eliminated, check the major components one by one
- etiennel22
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Re: Power Supply Unit
Will give it a go when I get a chance. Thanks
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- etiennel22
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Re: Power Supply Unit
Finally got time to test the unit. So it seems the yellow Polypropylene Film Capacitor next to the Fuse is also dead.
Found a place that sell those capacitors hopefully I can get the unit working tonight. Holding Thumbs
Found a place that sell those capacitors hopefully I can get the unit working tonight. Holding Thumbs