Recently had problem with my Pro Track 1 Series KJ2, trace on the CRT display disappeared & no text coming up on the LCD.
First I checked all the PSU outputs and could find no problem.
The switches / buttons on the front panel appeared to respond, and I found I could go into the menu blind then select "Prefs" followed by "LCD con" and by turning the Encoder Knob I altered the contrast and got the text back on the LCD. But the "save" function did not work.
I then contacted Curtis at Huntron who emailed this reply:- " This has the appearance of being a program issue. One thing to try is uploading the original factory Cal file to your ProTrack. You do need to get the ProTrack connected to a PC and communicating. Attached is the PTC file for you ProTrack. Instructions to perform the upload are here:
http://huntron.com/sales-support/faqs.htm#Q8" .
Looks like the Flash memory on my Pro Track got corrupted and was sorted by reloading the program from Workstation 3.54.