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Posted

What should one measure at this point (PIN21 of PIC) when the power's off? I measure ground there. Is this Ok?

When the power's on, I see a "not so nice" "puls" on the RC pin.

The SC pin "puls" is much nicer.

Having some problems starting the interface of my SEQ...

Cheers,

Tom

Posted

Hi Tom,

how do you measure the pins, with a scope, or just with a multimeter?

I would propose to check the continuity when all ICs are removed from the sockets. In this case, you shouldn't measure a "short" between pin 21 and ground (measuring result: > 0 ohm or even maximum resistance)

Note that there is a troubleshooting page: http://www.midibox.org/dokuwiki/doku.php?id=din_module

Best Regards, Thorsten.

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