Quoted from Quench:Does the LED on the Squawk and Talk sound board flash 5 times on powerup?
Is that a new TMS5200 speech chip I see installed at U8?
What test equipment have you got? Oscilloscope, logic probe, multi-meter..
What happens when you press the test button on the sound board? Normally it speaks a few phrases for about 10 seconds then ends with a single tone from another sound chip.
Are other sound effects (not speech) working?
What are you getting on TP9 when speech should be playing and when it shouldn't?
Are you measuring -5VDC at TP4 which is for the speech chip?
Does the LED on the Squawk and Talk sound board flash 5 times on powerup?
No. It flashes once...pauses...then 3 more times.
Is that a new TMS5200 speech chip I see installed at U8?
I have no idea. It was on there when i got it.
What test equipment have you got? Oscilloscope, logic probe, multi-meter..
Of those three, only a multimeter
What happens when you press the test button on the sound board?
Nothing.
Normally it speaks a few phrases for about 10 seconds then ends with a single tone from another sound chip.
Are other sound effects (not speech) working?
All i hear is buzzing
What are you getting on TP9 when speech should be playing and when it shouldn't?
Im not sure what you mean by this. There is nothing coming from t9 (it is a metal loop, right?)
Are you measuring -5VDC at TP4 which is for the speech chip?
I will check this and get back