Emu XL-7 & MP-7 User's Group

My worst nightmares have been brought to life! I was playing with my 
MP7 and noticed that my siedlaczek orchestral rom was not being read 
or recognized by the unit. Any preset i tried to use with samples 
from this ROM appeared with '???'. I decided to re-seat the ROM, so i 
turned off the unit, disconnected it, unscrewed it and put the card 
back in, this time in slot 4 (it was in slot 3 originally). I screwed 
the case back together and connected the power and tried to switch it 
on but now i get nothing. I don't get ANY lights or screen, the unit 
is totally non-functioning. I tried taking various ROMs out, moving 
their slots, using different power cables, checking connection of the 
grey cables in the box but i get nothing! I'm pretty sure re-seating 
my siedlaczek ROM did not cause this problem... Perhaps I have blown 
the power supply, busted one of the grey cables or bent a pin, 
however i can see NO physical damage at all, not even a slightly bent 
pin.

Anyone got any ideas how I can test the power supply and/or get my 
unit working again? :(

TO test the power supply, use a meter tester and measure the voltages
between the different coloured wires on the power supply.

I had a similiar problem myself and found that it was a loose connection
where the power wires come out of the power supply. I ended up disconnecting
the power wires, twisting them round a few times and reconnecting them. This
tightened up the connection and the problem went away.

Stu

-----Original Message-----
From: epoq [mailto:diveintomercury@...]
Sent: 23 March 2004 16:09
To: xl7@yahoogroups.com
Subject: [xl7] MP7 won't light up


My worst nightmares have been brought to life! I was playing with my
MP7 and noticed that my siedlaczek orchestral rom was not being read
or recognized by the unit. Any preset i tried to use with samples
from this ROM appeared with '???'. I decided to re-seat the ROM, so i
turned off the unit, disconnected it, unscrewed it and put the card
back in, this time in slot 4 (it was in slot 3 originally). I screwed
the case back together and connected the power and tried to switch it
on but now i get nothing. I don't get ANY lights or screen, the unit
is totally non-functioning. I tried taking various ROMs out, moving
their slots, using different power cables, checking connection of the
grey cables in the box but i get nothing! I'm pretty sure re-seating
my siedlaczek ROM did not cause this problem... Perhaps I have blown
the power supply, busted one of the grey cables or bent a pin,
however i can see NO physical damage at all, not even a slightly bent
pin.

Anyone got any ideas how I can test the power supply and/or get my
unit working again? :(




Yahoo! Groups Links

More specifically, you can use a DMM (digital multi meter) to test if the voltage is getting past the power supply.  Leave the inside exposed, and plug it in, be very careful.  Then do a continuity test and follow the electricity from the wall into your gear, then you should be able to find where it stops.  You just hold one of the little metal pointers on a piece of wire you know is "hot," then put the other one on the other side of the power supply, capacitor, resistor, or what have you.  If it's not something simple you'll probly have to take her in to see a doctor.
 
-Wesley

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