Who fixes Wizard of Wor?

That's usually an easy (but expensive) fix. First check that the speaker dedicated to the Wizard's voice is connected to the audio control. Check that the volume is up for the Wizard's voice. If you still have nothing it's probably the "SC-01" speech chip that is bad. Easy to confirm if you have a working one or have a Gorf with working speech you can take it off of. If it is the chip search on here or make a post looking for one as a few people sell them.
 
Check out the audio amp board. Its a three channel amp, check out the section for the voice. If the original labels are intact this will be simple to trace it out. Start at the volume pot for that channel and check all associated parts. On the gorfs it usually the transistor and there are a couple resistors that are sometimes bad also. I have a complete amp board with bracket if your interested in buying it. Its untested but looks to be in great condition. Unfortunately I have no way to test it.
Btw, I have nos SC-01A in stock.
 
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If the chip is proven working then check your speaker and wiring by running one of the other 2 sound channels to it.

The Wizard's voice gets to the audio amp on the Green/Red wire from P2 on the logic board. Check that wire for continuity. If your other two channels are working you know the audio common ground coming from the logic board is good as it is shared by all 3 channels.

If the speaker and wiring coming into and out of the audio amp board are good then it's probably a problem in the audio amp itself. The Wizard's voice is "Audio In #3" in the schematics as the circuitry is different than the other 2 channels.

After that the problem would lie in the game board/logic board.
 
As others have stated.......if speaker and wiring check out, the SC-01 chip checks out, the amp board is good (I'll add, there's some tantalum caps on the amp board that also go bad).......it starts to get tricky.

First, swap the two custom audio/input/output chips (location X2 and X3) with your Gorf.

After this....it's educated guesses...chip U4, transistors Q9 and Q8, and chip U8.

Edward
 
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