Strange type of bleeding on Donkey Kong blue girders

Mamejay

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Strange type of bleeding on Donkey Kong blue girders

hey guys,
I finally got my DK board working. Everything is working perfectly but I have noticed that the rivet stage the blue girders have the like a bleed effect on the top of them.
You can see this on the title screen also.
Someone mentioned that my monitor may need a degauss. Has anyone seen this before?
 

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Adjust the blue gun on your monitor, should be a pot on the monitor neckboard.
 
Got a CraftyMech TPG? I bet it will show your blue is bleeding and some tweaks on the pots will fix it.

The other colors look good, yes? I assume you're using a Sanyo EZ20.
 
Thanks guys. I have not adjusted anything yet as i got the cabinet a few weeks ago and the board repaired just yesterday.
All other colours look fine but blue.
Will check later today and post my results.
 
The (3) brightness adjustments and the (2) blue adjustment pots on the neck board - any or a combination of some or all will likely fix it and get blue dialed in to looking good without bleed. Brightness pots are at: (1) remote board next to volume pot, (2) sub-brightness in the upper right quadrant of the chassis if looking in from the back of the cab (it is vertically mounted, fyi), (3) screen knob on the flyback.
 
At a quick glance it looks like a contrast issue to me... Have you adjusted the sub brightness pot in the back /middle of the sanyo chassis?

it's probably this. I haven't done that adjustment in 800 years, so I've forgotten about it lol.

the incredibly crude but mostly usually effective way of fixing white balance on these is to lift up that cardboard flap around the monitor and stick your head over the edge and just turn each color up (at neckboard) until the screen tints red green or blue. then you back off the adjustment until the tint in the black background is gone. your backgrounds should have a blue tint if you're seeing smear on blue.

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since we exist in the era of misinformation around here, I'll just throw out that DK has no color adjustments on the game board, that was only something on the Vs. and PC-10s.
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if you haven't done so already, I encourage picking up a set of those plastic CRT alignment tools. becomes very beneficial with adjusting B+ on these. or that sub brightness.
 
OK everyone. Yes it was the blue. Image was also not bright so had to adjust the sub-brightness. All lovely now.
I bought this machine as fully working and cleaned up. I have had to have the board repaired with 3 separate issues and also the monitor settings all over the place. Anyway all working now.
 
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