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<DIV><FONT face=Arial size=2>Have a very irritating loud hum coming from the
center channel (Wizard's Voice) on my Wizard of Wor upright. I have spoken
to several other collector's with the same problem, but others don't have
it. So, I am wondering if it might be an early design flaw that was
corrected in later production.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Anyone have this problem and find a fix? This
is what I have tried:</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Replaced boardset and cage with another known
working set</FONT></DIV>
<DIV><FONT face=Arial size=2>Replaced the Power Supply board</FONT></DIV>
<DIV><FONT face=Arial size=2>Replaced ALL the caps on the PS board (reflowed
connectors also)</FONT></DIV>
<DIV><FONT face=Arial size=2>Replaced the audio amp board (then replaced all the
filter caps on it)</FONT></DIV>
<DIV><FONT face=Arial size=2>Replaced the line filter</FONT></DIV>
<DIV><FONT face=Arial size=2>Unplugged the monitor and the marquee light to see
if there was interference</FONT></DIV>
<DIV><FONT face=Arial size=2>Replaced the fuse holder and all fuses</FONT></DIV>
<DIV><FONT face=Arial size=2>Went over every inch of the wiring harness (all
grounds in place)</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Hum is only coming through the center
speaker. Other 2 channels are fine. Only way to quiet the hum
is to put a capacitor on the speaker leads. This makes the hum quieter,
but also makes the Wizard's voice somewhat distorted, so this is not an
acceptable fix.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Anyone?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Walt</FONT></DIV>
<DIV><FONT face=Arial size=2><A
href="http://www.enetis.net/~wandk/arcade/arcade.htm">www.enetis.net/~wandk/arcade/arcade.htm</A></FONT></DIV>
<DIV> </DIV>
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Received on Mon Oct 16 14:31:17 2000
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