This certainly seems to be a problem with the earlier H decoders. I've had the problem of early Lenz (1024/5 series) decoders forgetting settings if not used for a while.
As a tempory measure, if you are getting too many shorts one way of finding them without the system shutting down would be to wire a car indicator bulb in series with one of the track wires - under normal running the filiment may just glow & with a short it will be bright !
The Bachsu decoders are excellent - we have fitted quite a few & have a couple of locomotives on SL fitted with them.
As a tempory measure, if you are getting too many shorts one way of finding them without the system shutting down would be to wire a car indicator bulb in series with one of the track wires - under normal running the filiment may just glow & with a short it will be bright !
The Bachsu decoders are excellent - we have fitted quite a few & have a couple of locomotives on SL fitted with them.