High pitched sound (Intermittant) after installing new chip

[Nodrog1826]

Long story short.

Massoth XLS Chip blew on my older Crok (20400), so new one with the 8230040 sound profile installed. Buiilt it up to a rolling chassis with new motors, (which were tested prior to installing) head/tail lights and sound all was fine. Re installed cab lights into the XLS, auto couplers/op pantographs which are on function chips.
Re aligned the sounds to line up with other fleet locos. Moved the F buttons settings of the brake sound from 15 to 2, shunting speed from 8 to 15. and sound off from 6 to 8 and a couple of others.
Now it runs and functions fine, but occasionaly for no reason the sound starts a loud high pitched sound, that can only be stopped by either lifting the loco off the track or switching the power off. Emergency stop and re set does not resolve it.

Dodgy chip, or something I have done.

I do have the Massoth Service Tool, but my past experience of using it are dire to say the least.

Suggestions welcome

 

[dunnyrail]

I had some real issues attempting to move functions aroind on a Massoth Chop utilising my Dimax. Gave up the ghost in the end. One suggestion, put all F’s back to where they were when you got thenchip. Try out loco to see if unwanted sound still present, then update one F at a time and test again. No swearing allowed in this process!

 

[Nodrog1826]

Ok will try.

Edit...

Been out, thought I would give it a run to see if it happens again, and carn't get it to make the noise, so going to leave it alone for the moment.
If it starts again, will re set the sounds.