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menace:

Northerngames brought this to my attention--Nanao monitor schematics as well as a few chassis pics(contributed by segasonicfan apparently):

http://files.filefront.com/Nanao+Schematicszip/;8697391;/fileinfo.html

thanks!

SirPeale:


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Lutus:

Here is a short video tutorial I did for Bender on how to adjust the B+ voltage on my Sanyo20EZ monitor in my Donkey Kong machine.


B+ Adjustment tutorial:  This method can be used for all monitors.  Reference your monitor's manual to determine the correct B+ voltage test point and what the expected B+ voltage should read.




 :cheers:

jono:

what does adjusting the b+ voltage do? as in the appearance on the screen

Lutus:

Maladjusted B+ can do many things to screen geometry.  In my case.  I could not tune in the FOCUS and my HORIZTONAL deflection was such that I could only fill about 45% of the screen with the video signal.  But mine was +88V when it should have been +108V.  Any lower and it might have stopped coming on.

B+ is often overlooked, but it should be checked anytime after performing cap kits, HOT and flyback replacements, etc...


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