On Jan 2, 10:26 am, Vsoars wrote:
A year ago I began having audio problems. I would only get the up
sound at 4+. Sometimes, toward the end of the flight, I didn't even
get sound at 5+. The instrument itself tracks the same as the Winter,
and the averager works ( as confirmed by another pilot in the air.).

Additionally, after an hour in the air, the Borgelt ceased issuing a
sound when I flew too fast. (Occasionally it would still emit the
appropriate sound, but there were long periods of silence when I was
flying fast at a low McR. setting.) The associated instrument did
indicate that I was flying too fast.

At this point I sent it back to the factory and paid $200. They said
that there was nothing wrong with the instrument and suggested that I
may not know how to operate it. After using it successfully for 4
years, that seemed like an odd suggestion.

Now I have a new problem. Sometimes when I find lift, the audio is
correct. Other times it indicates a rapidly increasing lift (13+ ave.
and rising) when the lift is 3 or less.

Has anyone else experienced this problem? Does anyone have any
suggestions for solving the problem other than up-grading?

Two thoughts:

1. Check your wiring for the speaker. It is usually external to the
unit and could be a weak spot in your system.

2. Check that your voltages are all good. Mine does odd things when
the voltage starts to drop.

3. There is a know problem with the switching from run to climb mode
that will cause some errors. This requires a new resistor, but that
should have been checked if it went back to the factory.

Sorry you are having problems, it seems odd that you would get that
response from Borgelt, I have always had good service so far with my
B50.