Hello.
I want to save a Ghost N Goblins Bootleg Pcb. I managed to fix the graphic error, I thought everything was fine. The output stage Ic is missing, I thought I would put one in and the pcb is ready. Unfortunately not. The error comes from deeper. I went back to the LM324 preamplifier output, There is no sound at the output. I checked the input, there is no sound there either. Unfortunately I only have a logic pencil and no oscilloscope. I tested the analog-digital converter and it is definitely good what is in it (2 pcs YM3014). Backwards there are only the 2 yamaha chips where I got stuck with fixing the error. Does anyone have an idea what I can do?
The sound eprom is not faulty.
Thans Rob
I want to save a Ghost N Goblins Bootleg Pcb. I managed to fix the graphic error, I thought everything was fine. The output stage Ic is missing, I thought I would put one in and the pcb is ready. Unfortunately not. The error comes from deeper. I went back to the LM324 preamplifier output, There is no sound at the output. I checked the input, there is no sound there either. Unfortunately I only have a logic pencil and no oscilloscope. I tested the analog-digital converter and it is definitely good what is in it (2 pcs YM3014). Backwards there are only the 2 yamaha chips where I got stuck with fixing the error. Does anyone have an idea what I can do?
The sound eprom is not faulty.
Thans Rob
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