[TG] TG11] E120- DSM 300 setup issues

[pjcgrows@gmail.com]

Hello,
I have an E120 that was throwing DSM communication lost signals.
We sent the E120 to Raymarine twice. They said the unit was fine.
I then saw lots of complaints (on line) about the DSM 300. We bought a used unit from a used electronics place in Florida.
The "new unit" showed "ping disabled" and would not give any sounder readings.
We sent it back and they replaced it. The next new unit did the same thing.
I tried to enable Ping on the ESM and it will not accept the change.
When you try to reset the DSM nothing happens. You get the "yes" option on the keys but, even though the button beeps, it does not reset the DSM.
I did factory reset on the E120 and nothing changes.
I reinstall the old DSM and I have a sounder reading but if I try to disable ping on this unit I cannot change anything here either.
I also cannot change the transducer (which is not correct) or make any other changes to either the fish finder menu or the DSM menu.
You can highlight the change and the OK button beeps and closes the option but it doesn't change the set up.
Am I missing something simple?

Thanks in advance. Raymarine doesn't support these devices anymore which is very frustrating as they did charge $800. to repair it less than a year ago.

Peter