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Main => Monitor/Video Forum => Topic started by: sphetr2 on February 02, 2009, 01:49:49 pm

Title: Upside-down picture on monitor (can't identify)
Post by: sphetr2 on February 02, 2009, 01:49:49 pm

Hey,

The picture on my monitor is upside-down. Using ArcadeVGA and JPAC.

Based on this guide (http://homearcade.org/BBBB/yoke.html), I'm pretty sure this is a problem with the yoke(?) but I'm not sure what/where those are, and don't know what kind of monitor I have (it looks similar to this one (http://www.jomac.net.au/K7201.jpg) but not entirely).

Can you help me identify the yoke?

PICS
http://tinypic.com/view.php?pic=20rpusx&s=5
http://tinypic.com/view.php?pic=2ev6h60&s=5
http://tinypic.com/view.php?pic=2djuioj&s=5
http://tinypic.com/view.php?pic=54vh37&s=5
http://tinypic.com/view.php?pic=wrao7m&s=5

The last pic is something I saw that I thought looked like the yoke in the guide. Not sure, though.

Thx

Title: Re: Upside-down picture on monitor (can't identify)
Post by: Kevin Mullins on February 02, 2009, 02:18:25 pm

Looks like you have a K7000 variety of monitor.
Should be able to find a label something like WG 25K7XXX somewhere.
There should also be a "Pxxx" number somewhere on the main chassis.

Your yoke connector will be behind/under that metal shield area.

Title: Re: Upside-down picture on monitor (can't identify)
Post by: sphetr2 on February 02, 2009, 02:41:06 pm

Thanks!  ;D I'll let you know how it goes after work today.

Title: Re: Upside-down picture on monitor (can't identify)
Post by: sphetr2 on February 03, 2009, 05:59:14 pm

How is the yoke connector affixed to the board thingy? Can I just sort of pull it off?

Also, the guide I linked to shows the connectors as VH VH whereas yours portrays them as HH VV. Which is it (or how can I tell)?

Thanks again.

Title: Re: Upside-down picture on monitor (can't identify)
Post by: Kevin Mullins on February 03, 2009, 06:14:26 pm

Quote from: sphetr2 on February 03, 2009, 05:59:14 pm

How is the yoke connector affixed to the board thingy? Can I just sort of pull it off?

The one that plugs into the main chassis just pulls off.
It "plugs" in.

Quote from: sphetr2 on February 03, 2009, 05:59:14 pm

Also, the guide I linked to shows the connectors as VH VH whereas yours portrays them as HH VV. Which is it (or how can I tell)?

Bob's guide shows both versions.... VH VH and VV HH.
The first is for a G07, the second is more typical of like what you have.

When in doubt..... Ohm it out.

Quote

You will get a lower reading on the horizontal winding, and typical ranges are from 2 to 12 ohms on the H winding & from 12 to 60 ohms on the V winding.

That will at the least tell you which two wires are a "pair" that go together.
If there is no continuity, then they do not go together.
DO NOT mix them up between vertical and horizontal. V with V , H with H

Yours should be setup just like the picture I posted.
One pair is spread further apart.
Only flip that pair on the same two pins.
Same goes for the other pair.
One pair flips it horizontally.
The other pair flips it vertically.

Title: Re: Upside-down picture on monitor (can't identify)
Post by: sphetr2 on February 04, 2009, 07:38:08 pm

Worked perfectly. Thanks.

Title: Re: Upside-down picture on monitor (can't identify)
Post by: Kevin Mullins on February 04, 2009, 10:04:38 pm

Cool......glad you understood all that.   :cheers: