My HPS40 turn on, the backlight work perfectly but not shows any graphics. I try to adjust the contrast, but is impossible, because i can´t see anything.
I have also tried pressing the reset button for 10 seconds, but when boot up again the same thing, not picture show.
For reference, the HPS40 It seems to work correctly as it makes sounds when I press keys, the only thing is it does not show image.
Sorry, the HPS40 is not equipped with a speaker.
Are you sure your device is a HPS40?
Anyway, this problem is not user serviceable.
You can return your unit for inspection/repair to:
That click most likely comes from a relay that switches.
Sorry, we cannot make any estimates without being able to examine your unit.
Repair usually costs substantial less than a new device, but keep in mind that shipping and handling will be added.