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Old 09-02-2016, 05:24 AM   #1
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Join Date: Sep 2016
City & State: Sør-Norge
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Posts: 14
Default Troubleshooting B&W Original Powersupply

Hello all,

I just registered on this forum and hope that someone might be able to help me. I am trying to repair an older B&W Zeppelin for my parents. The status light is blinking red which according to B&W means that it need a repair. I searched a little bit around the internet and the power supply of this product seems to be a common problem.

I decided to open it up and take out the power supply. The first thing I noticed was that all the caps seems to be of good quality. Rubycon on the dc side and Panasonic on the ac side. (Excuse my terminology I am very much a beginner here).

However one of the caps a rubycon 2200 uF 16 VDC seems to slightly be bulging. Also there seems to be several burned spots on the backside of the pcb.

So as I see it there are two options:

- Replace some caps?
- Replace the power supply board for a new one (expensive)

Replacing the whole power supply will be quite expensive however might be worth it if this is where the fault lies. But how sure can I be that it is the psu? Also I have never replaced caps before at all so I am very much a beginner. Please keep that in mind.

I have attached some pictures of the board. Any help will be appreciated. The name and make of the psu is Abletec ALP0050-0000-H. Specs: +25V max 1A continuous 2.2A FTC/+5V max 1.5A continuous.
Attached Images
File Type: jpg 2016-09-02 11.19.35.jpg (447.9 KB, 264 views)
File Type: jpg 2016-09-02 11.19.41.jpg (555.8 KB, 223 views)
File Type: jpg 2016-09-02 11.19.56.jpg (461.9 KB, 279 views)
File Type: jpg 2016-09-02 13.28.24.jpg (598.4 KB, 205 views)
File Type: jpg 2016-09-02 13.28.32.jpg (579.7 KB, 204 views)

Last edited by Delirious; 09-02-2016 at 05:29 AM..
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