how long due thew sounds play when you power down in conventional ?if the sound stops immediately your battery is weak or defective. start there if battery checks OK try a conventional reset.if you use DCS you can reset from the remote,the sounds should play 3 to 6 seconds approximately,if sounds cut off immediately battery is dead!
what is the item engine number?
also unplug all the connectors on the PS 2 board and re-seat them,could even be loose connector or wire?
Alan
P.S. since you have a bcr do you wait about a minute when you first power up, it takes time to charge the bcr super- capacitor.
i have in my ps 2 engine and if i don't wait long enough my sounds don't work right either. you can try a dcs reset if your using dcs with tiu !
good luck
Alan