Jump to content

Hst works on program track but not main

Recommended Posts


I have a dcc sound fitted HST which I think is the r3770 one.

It used to work fine but now only works on the programming track (both sound and motion) but is completely dead on the main track. All other locos working fine. I am using z21 + booster - only drawing c1.5 amps. I tried adjusting voltage on both main and programm to 16 (was 18 and 16 respectively) but no difference.

Any thoughts?

Many thanks in anticipation.

Link to post
Share on other sites

  • RMweb Gold

Is the decoder still set to the same number? I have had a couple of decoders that have set themselves to address 3.

Link to post
Share on other sites

  • RMweb Premium
Posted (edited)
4 hours ago, PeterLoader said:

1.5 amps for everything; the decoder correctly responds to CV1=93 on the program track but totally dead on the main track

Are you using 2 or 4 bit addressing?

As above a reset is a good idea



Edited by melmerby
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Create New...