Don't know if this is your problem but the issue below was apparently corrected in 4.99 s/w for the 7200S and MP10a
.[#TE16600T/FPGAversion16DLI2CardonMP20S,MP10A/ALL] DGP speakeropen issue is fixed. (Reported by USA)<Description>If you use FPGA version16DLI2Card, itâ€™s possible to send speaker on message to DGP during conversion. This issue is fixed.