testing magic eyes

[pwdrive]

hi lawrence its just to get a display all the res can be checked on my taylor.
the reason for this is that i bought a load of em80/em84/em87. from the Ukraine they were used but meant to be ok .i tested 10 all passed,but when i tried one in a set
it was dim.i tried two more and they were ok.so just a method of checking the target brightness.
rob t

Hi robT

They can be a pain those magic eyes, insofar as some are hard to obtain, I usually check all the voltages and then start trying other things in the vain hope that some how the display will get better, in most cases if the grid voltage is swinging enough and all the anode and heater voltages are more or less ok then the said item has had it, at least a simple tester will give you a definitive answer.
Good luck with the project.

Lawrence.