Hantarex Polo 28" Brightness Issue

pinballtoys

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Donor 2015
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WORTHING, sussex, United Kingdom
Hello all
Games is a Time Crisis 2 with the twin 28" Polo screens. One screen was not working, flyback was arcing where the anode cup lead exits. Fitted new flyback and i get an image but its very dim. On the remote board the brightness pot does very little where as the contrast pot alters from dark to light image. The opposite of what i would expect. I've got on of those excellent craftymech tpg so i can see an image OK but when i plug it into the game image is so so faint, you can barely see anything.

Here are the voltages i've found, they all seem a little low but not sure if they are acceptable or indicated i've got a bad flyback?
My B+ is 136.5V which looks correct?
yet the other side of the flyback all the voltages seem low
+200V TP33 measures 175V
-190V TP30 measures -160
heater measures just 1.4V

G1 measures 7V!
G2 measures 360V

Bob
 
hello
i know my grid 2 voltage is too high at 7V, i'm thinking this should be -100V at least
This would explain my lack of brightness. Whats the best way forward to fix this please?
bob
 
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