I have dug through the other forum topics on this before posting, but am still having issues. I bought a Pharaoh that did not have either speech nor sound, so I purchased a set of sound and speech boards from pinballpcb.com. I installed both boards and had sound and speech immediately... for one game. After the first game I lost speech, but still have sound. I have checked all fuses (which are new) and they are good. I have swapped and checked the ribbon cable that connects the speech and sound board (I have a brand new one and an old one). I have checked all other wires to the sound board and made sure they were reconnected properly, etc.
If there are any ideas out there or a post I missed that fixes this same issue, I would love to hear about them.