I recently re-assembled my Embryon machine after I fixed the cabinet and did a deep clean on parts. Everything is working well post-reassembly, with one exception...the speech is barely audible, even with the door volume all the way up and both sound and speech volume pots turned all the way up. The sound volume is fine. The speech volume is technically working, but barrrrely audible. It's very very quiet. It was not like this before I took it all apart, so perhaps something got jostled around and failed?
This is a relatively new machine to me, but it appears many capacitors have been replaced, and the volume pots look new. The soldering seemed ok. There is a jumper on the back of the TMS5200 chip on a pin that is missing a soldering pad...not sure if that would perhaps be fragile and causing an issue. I will consult the schematic and try to troubleshoot further.
Any other thoughts what it may be? As a new owner and first-time pinball tinkerer, would appreciate the help. Thanks!
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