I need a technical help... :)

From Marcelo Reis Pinto <xxxxxx@bol.com.br>
Date
Hi, guys!

I hope some mercyful soul can help me out!! :)

 I've been contacted by a friend of mine who's willing to sell me a
Turbo-Duo
and a white PCE with CD unit, System Card 2.00 and Interface Unit. I'm not
really worried about the Duo, since it is in perfect shape, but there's
something weird with the other videogame.

The PCE alone is working great, as well as the CD unit, but when you put
both of them on that Interface Unit, a big "bzzzzzz" sound come from the
latter, after a few minutes. It works well, but it seems it's going to
explode suddenly! :)

So, did anyone seen a similar problem before? And, more important, is this a
simple thing to be solved, in theory?

I need your help, guys, because it's hard to find a reliable source
regarding on PCE within Brazil.

    See you,

        Marcelo Reis (UNIVERSO PC-ENGINE)
        http://pc.engine.vila.bol.com.br