Re: Sound hum in Wizard of Wor

Have you tried another speaker?

Jon

At 02:14 PM 10/16/2000 -0500, Walt wrote:
>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.
>
>Anyone have this problem and find a fix? This is what I have tried:
>
>Replaced boardset and cage with another known working set
>Replaced the Power Supply board
>Replaced ALL the caps on the PS board (reflowed connectors also)
>Replaced the audio amp board (then replaced all the filter caps on it)
>Replaced the line filter
>Unplugged the monitor and the marquee light to see if there was interference
>Replaced the fuse holder and all fuses
>Went over every inch of the wiring harness (all grounds in place)
>
>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.
>
>Anyone?
>
>Thanks,
>
>
>Walt
><http://www.enetis.net/~wandk/arcade/arcade.htm>www.enetis.net/~wandk/arcade/arcade.htm
>
>

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Received on Mon Oct 16 14:31:17 2000