Are there any Bachmann function decoders that do not support CV read?

[Grapevine Flyer]

Are there any old Bachmann function decoders that do not support CV read?

Possibly the old Lenz decoders? I have an old Bachmann decoder (small black), and when I attempt a CV read in service mode it is not responding. I was wondering if that is by design.

Are there any Bachmann decoders that don't support CV read?

[Trainman203]

When decoders and their technology get really old, in my opinion it's better to replace it with a new up to date one, instead of continuing to give the corpse CPR.

I have several Spectrum engines with Soundtraxx decoders from 10 years ago.  At the time they were beyond the bee's knees, but compared to the current Tsunami2-2 they are slugs.  I'll keep them until I can afford to replace them, but they are definitely less fun-to-run and I use updated engines more.

[Grapevine Flyer]

Thanks so much - I agree. My question is more of a technical question. Trying to understand if any of the decoders were so basic that they did not support CV reads at all.

[Nathan]

What DCC System and what type of CV Read are you talking about?

Nathan

[WoundedBear]

You are correct. The early (10 year old?) Bachmann basic 2 function decoders do not support CV feedback.

I still have a couple in my Shays......a royal pain not being able to read back.

Sid

[jward]

Are you by chance using a DIgitrax system to read those CVs? If so, try a 1k ohm resistor across the rails of the programming track. Digitrax systems have trouble reading and writing to Lenz type decoders without the resistor.