Hi John
In my EM 200 Temma 2, the red LED that illuminates the Reticule is just crimped/soldered onto 2 floating wires and if those wires are moved, the LED fails to illuminate the Reticule.
I tweaked my LED position by carefully poking a small, rounded end wooden dowel down the hole at the front of the DEC housing and gently nudged the two wires, through trial and error until the FOV was illuminated evenly.
However, if the red LED does not work or the reticule is just not visible for some reason, you can always use the QHY PoleMaster (sold by
Gama Electronics) to achieve excellent polar alignment.
Cheers
Dennis