Hi,
I have a NAVITEK LAN/cable tester (for want of a better name).
It includes a two line alphanumeric (plus icons) display to present prompts and results to the user.
The display has developed faults -- similar to "dropped pixels". I'm trying to figure out the best way to sort out where the problem might lie -- in the display connection *or* in the (serial) interface to the display PCB.
And, of course, ideas as to how it might be repaired. While the device wasn't inexpensive ($500), it's long obsolete so probably not worth sending it in for service (I will contact the manufacturer just to see how outrageous their service prices are :> ).
OTOH, it's *really* handy when I need it.
I.e., fixed it would be wonderful. Even "as is", it has some value (though it requires patience to determine what the display is saying as the prompts cycle by).
I suspect the first step would be to see if the individual "displays" (prompts?) are consistent each time they appear or if they exhibit some variation.
Then, determine if there are any patterns in the faults.
Finally, mechanically stress the device to see if these patterns change.
Any other things I might want to try or observe?
Thx,
--don