Originally Posted by
Joecnchelp
Hi There,
Thanks for the reply, Yes unfortunately most of the memory chips are not socketed, only the ones makred in red on the picture below.
I dont have a logic probe only a multi meter which doesent help, not that a logic probe would help because of how the board is positioned in the machine.
I think i have done all i can do, tested every capacitor and resistor on the board, all were correct as i expected because it is outputting something, most of which is correct, other than when it has to update the screen fast, like the X and Z positions.
when you press the buttons under the screen and its got to update the screen information, sometimes it all goes from the bottom, if you press the coolant on off button, you will get a few letters marked in pink like oo or ol from coolant, then you press program and it all goes again.
Hopefully the second hand board will fix it, if not do you or anyone on this forum have a FX702 board at all?
Thanks - Joe