Black Hole
Gottlieb, 1981All sounds work except speech. When a speech sound is triggered it sounds like the speech wants to start but doesn't and then all other sounds stop working until I reboot. I have recapped the sound board and have a logic probe.
Pin 8 of the speech chip (U14) stays hi
Pin 7 stays low
Pin 5 produces garbled speech when probed
Pin 4 has no reading.
Quoted from toberlindacher:All sounds work except speech. When a speech sound is triggered it sounds like the speech wants to start but doesn't and then all other sounds stop working until I reboot. I have recapped the sound board and have a logic probe.
Pin 8 of the speech chip (U14) stays hi
Pin 7 stays low
Pin 5 produces garbled speech when probed
Pin 4 has no reading.
Problem with the speech chip or speech circuit.
If there is a call for speech, the sound board will not play a sound till the speech chip sends a "done speaking" signal. Odds are if you have good voltage and ground to the Votrax chip, the chip might be bad. Just went through that with my Black Hole before selling.
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Boise, ID
Ottawa, ON