Can I fry a PS2 sound board and not hurt the control??

Did you try a Feature Reset?

Sound may have "accidentally" been set to off.  You may have damaged the speaker and that would  account for no sound.

And I've said it before but this is the LAST command loco I ever buy hoping it will work.

Dave, Dave, Dave...now let's see, how about the fact that having a derailment may have contributed towards the demise of you electronics?

Hey, it's not your fault, really.  Just think about it, they're putting microchips in something that is powered by 18VAC and upwards of 180+ watts.  Can we expect anything less when the engine goes off the rails?

I've had only a few derailments (most caused by "pilot engineer error"), but when it happens I get the all-overs as my wife sez.

When are they going to redesign these things to run off of 12VDC and to use less amperage?  At least that may help alleviate some of the issues.

Until then everyone should double-check their track, the position of their switches, and make sure all wheels are on the track.

Walk that train and inspect it before it leaves the yard

Just pulling your leg buddy, I know it's frustrating.  I keep saying as the electronics die in my engines I'm going to gut them and run just the 12VDC motors with a DC transformer.

The 1 bell 5 whistle thing?? Yes....a few times.....waiting between tries.  also power up and down between too. But thanks

I can see the day when I pull them all and run 12V DC.....so simple....

The train still run right ?  if so try the sound i turned mine off and it work like you said 

Dave,  Yes.  The audio is sensitive and it could have been damaged without shorting.  At that point everything works fine but sound.  This is repairable at the component level.

If you are comfortable opening the enigne, if you remove the boards from the black plastic holder and look at the under side chip U-5 and see if it looks damaged.  Doesn't always show, but many times it does.

I can do this repair if you want it.  G

FWIW, I've had the sound disappear a number of times running DCS locomotives that derailed and tripped the breaker.  Normally, what happens with mine is the sound is just turned all the way down.  Why it does that is a mystery, but so far it's never smoked any circuitry.

I'd suggest running it on a full DCS layout and doing a feature reset to see if it's something simple.