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General Category => Technical Support => Hardware related => Topic started by: Emu on 17:10, 13 March 21

Title: Fix broken Symbiface II?
Post by: Emu on 17:10, 13 March 21
Hi all,
a few days ago I bought a Symbiface II at eBay.

Unfortunately, it's not working. I connected it to different power supplies (providing up to 12 V / 4 A), but it doesn't do anything, no initial LED, no ROM messages. If I turn on the CPC with anyone of the power supplies connected to the SF, there are strange rythmic noises from the CPC speaker.

If I disconnect the power supply (the SF still connected to the expansion port) the noises are gone, but the CPC is working normally.

Does anyone know a way to find the problem and perhaps to fix it?

One thing that caught my attention is one of the electrolytic capacitors, the central one at the front edge (on my SF it's also the smallest one). It's top looks dark and open, with two small holes, not metallic and shiny as the two others do.

Does anyone have a large-scale photo of a working SF II to compare the look of the central capacitor?

Title: Re: Fix broken Symbiface II?
Post by: Bryce on 17:37, 13 March 21
You can send it to me for repair if you like (I'm in Germany).

Bryce.
Title: Re: Fix broken Symbiface II?
Post by: gerald on 18:24, 13 March 21
One thing that caught my attention is one of the electrolytic capacitors, the central one at the front edge (on my SF it's also the smallest one). It's top looks dark and open, with two small holes, not metallic and shiny as the two others do.
From the picture I've seen of the Symbiface II, that looks more like the self of the switching regulator.
Title: Re: Fix broken Symbiface II?
Post by: Bryce on 19:51, 13 March 21
I've fixed several of these in the past where the regulator had fried itself. One even had a hole in the case.

Bryce.
Title: Re: Fix broken Symbiface II?
Post by: Emu on 00:45, 15 March 21
@Bryce (https://www.cpcwiki.eu/forum/index.php?action=profile;u=225) : Would you really do that? I would be happy to accept your offer.
Title: Re: Fix broken Symbiface II?
Post by: Bryce on 09:40, 15 March 21
@Bryce (https://www.cpcwiki.eu/forum/index.php?action=profile;u=225) : Would you really do that? I would be happy to accept your offer.

Yeah sure. That's what I do here - Fix "Things"  :)
I'll send you a PM.

Bryce.