3DO PSU issues

I bought a broken 3DO FZ-1 for a really low price, main problem no power supply unit (transformer).
Well I tought, maybe that's easy to find a old one on ebay or order a new transformer with the same stats.
Find a old one is almost impossible and there's a complete lack of information about FZ-1 - damn is really hard to find the schematic of a FZ-1.

Well, I found that post and the pics by "bitrate" really help me.
My unit have the same board - until now I don't know what the red cable pluged (CN3) on the the side of the stepped down AC supply connector do .... any info about that?
But the power supply is a +/- 14.5VAC ... and that's a easy one to find .... so I hook up and plug a 15.0VAC 1.5A power supply and guess what?

protection fuse on the circuit board allways blow up

1. Don't need to power up to blow up, just plug the jack on the socket and that's enough.
2. I´m not connecting anything on the CN3 connector, 'cause I don't know what is that. Ground?
3. Already changed the bridge rectifier and the supple filter capactior

and nothing,


any suggestion?

Thanks
Anderson.

 

I've moved your post to its own thread in the correct forum (repairs). You replied to a six year old thread and your issue is different, so it warrants a new post.

The FZ-1 has a built-in PSU. Are you saying someone removed the transformer? Or the board is missing?

If the fuse on the PSU is blowing, there's probably still a faulty component on it. Take it to a competent service engineer (TV repair shop) if you aren't qualified to do it yourself. The old thread shows you where the PSU section is - you need to check the components in there. If you know what voltage the transformer's secondaries are, it should be easy to find a replacement if it is faulty. It is likely you have another faulty component in the PSU stage, though.

 

sorry my delay to reply.

Yes, I'm talking about the transformer. It was removed (no not by me).

I don't have all informations, like I said, the photo posted on the old thread only show the +/-14Vac but there's another cable coming from the transformer a red one, which connect on CN3, and I don't know what this does.

ps. if I had someone more qualified to fix it I will take it to there and not be here trying to learn how to fix it by myself