The st4000 control head I started this post about eventually stopped turning on and would just send out one long, constant beep sound until I killed the power. If I left it for a day or two it would start working again, then a few days later refuse to turn on again with the long beep sound, and so on.
I eventually found a used st4000 control head, compass, and remote control on eBay for $220, which had a working display and seemed to work well out of the box. I got nervous because this one froze a couple of times the first day out only, and started working again once I turned it back on. It hasn't done this again. However, after working well for a few weeks it is now doing the same thing as the old control head - refusing to turn on and just sending one constant beep until I kill power. Voltage is good, nothing in the manual about this.
Thoughts? Anyone else have experience with this behavior?
Thanks!