Sanyo 20EZ Donkey Kong Monitor Width Problem

musicman282

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Does anyone have experience fixing the width on a Sanyo 20EZ monitor? I recapped the monitor with the deluxe kit from Bob Roberts which made quite a difference and also ordered the width caps from him and replaced all of the ones that I could with that kit. My monitor looks great, but it doesn't fill up the entire screen. There's about 3 inches of black space on the bottom edge and my horizontal width coil doesn't do anything when I attempt to adjust it. I read the schematics and can't seem to find what the model of the adjustable choke coil is for this monitor. If I even know what the range of inductance coming from that coil is I would be willing to just retrofit another inductor onto the board to make the width fixed. Does anyone have any ideas? Does anyone have a width coil that they'd like to sell to me?

Thanks.

Matt
 
When you say 3" of width, are talking total, including top and bottom? Is the image centered? I had a similar question recently, and I was told that Donkey Kong displays are not supposed to fill up the entire monitor.

There are a couple pots for adjusting the video on the game PCB itself - have you used those? On my two-board PCB, they're on the video board, which is the harder one to reach.
 
what was the resolution on this? I just capped an EZ last night with the deluxe kit and tried adjusting the width coil to no avail.

I have several EZ "parts" monitors, I could rob a width coil off one of those in case this one's broken, but is this a width coil issue or are there other caps I didn't change out (width caps?) that could be causing this?
 
1.5" - 2" of black space above and below the picture is normal. NO you will not be able to adjust it out any further so don;t even bother to try. :)
 
I don't know what you're talking about. I have 5 of these monitors in operation, 4 of them fill the width of the picture just fine.
 
both, one's a Popeye, one's a DK, and the other is a dual PC-10. do I need to get pictures?

only the one that came from this Vs. Uni I converted to Mario Bros. has this problem.
 
1.5" - 2" of black space above and below the picture is normal. NO you will not be able to adjust it out any further so don't even bother to try. :)
Ok.. digging up an old thread..
just done the cap' kit.. looks great.. but have this 1.5" & 2" top/bottom problem..
why ?
have people looked into this problem any further ?
True the Width coil does nothing to solve this :(
could this even be a bad cap' # C485 0.047uf or cap' # C480 0.47uf
 
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