mtc9000 - image too wide

rchadd

New member
Joined
Jul 21, 2005
Messages
41
Reaction score
0
Location
United Kingdom
Hi tested my galaxian pcb with a mtc9000 monitor today.

It seems that the picture is pretty good colour wise but the game screen is too wide to fit the physical monitor.

I can move the screen left and right to make the top/bottom of the game screen visible using the horizontal phase pot on the adjustment board.

I tried to adjust the Horizontal Amp pot and it did seem to shrink the image width slightly but no way enough to display the whole game screen on the monitor.

Is there another adjustment I should make?

Maybe a fault on the adjustment board? would a cap kit help fix this?
 
i measured the resistance of the pot that adjusts the Horiz Amp and it seems to be measuring low when at maximum rotation...

Question: Am i right in thinking the higher the value of the resistance of the Horiz Amp the narrower the image is?

Currently thinking of replace the pot and see what happens.

I will also install a cap kit too.
 
i replaced the 10K pot on the adjusment board and although it did seem to improve things a little but its was still too wide. i also tested with a 25K pot instead and no difference.

i have also applied cap kit.

any other ideas?

any other components that could be at fault?
 
Back
Top Bottom