ZOO KEEPER a Deconversion

Heres actual up close pic of this header on the board
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I happened to have these on hand from another project and i think they will work for this but not positive till I build a jump harness for the positive sync circuit.
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It appears to be on snug so I'll populate the video input side as bob suggested above and fire up and see what happens
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I ended up with a mini harness like this and now ill install and report back

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Well hot dog... works like a champ!!!! But im not sure how cold the monitor is, im goimg to adjust it out to my likes and and play a game or 2, then kill it, go paint the back door or find something to do!!

No adjust just hooked up....
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I repeat no adjustment, just plugged it in using the positive horizontal and vertical sync output header on the board rather than using the composite sink tied together at location j2 and j3 negative input on the GO7 CBO chasis...

Going to make fine adjustments and then shut it off and let it sit to cool at room temp and then turn back on and see if the adjustments have held
 
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A quick note about positive horizontal vertical syncs header on the Jrok ZooQ board for Electrohome CBO chassis....

Its my opinion that this is the only way to fly, and here is why......

In general every adjustment made seemed to have a much broader range of adjustment, what i mean by this, is that when turning a pot, the adjustment is less, abruptly changed, and is much easier and smoother to dial in. Also, because the 2 sync circuits are now separated, instead of a single composite negative looped at the input, most adjustments dont even effect other adjustments.

Before on the single negative composite every time one pot was turned, it seemed as though a fine correction needed to be made on another, and it felt like pulling strings everywhere, to get things stabilized and centered, and the width and hight correctly adjusted. To properly fill the screen.

Using the the separate horizontal and vertical positive sink is freakin amazing when it comes to using this newer FPGA hardware with the electrohome G07 cbo....

I really hope that all of these new boards coming out are incorporating this.

Up untill now, Electrohome monitors and this new hardware have not worked out, I've always ended up going to a k4900 or k7000 Wells Gardner.
 
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The verdict is in.... the game has sat for something like 6 hours or longer, thats more than enough time for issue to occur as before.

When the adjustment issue was present my video signal out put was ran negative composite sync looped.

When i abandoned that all together an used the positive vertical and horizontal sync header james provided on the board...

Everything just was beautiful!

As stated above all adjustments were stable and smooth with a wider range making fine detail easier and clear..

I really really really hope the new Bitkit includes this as well as the MulitPole FPGA projects... especially since pile position came factory with G07s and mitsushitas

For me, and the results i have, it would be discrimination against some monitors which are getting harder to come by, leaving out the option of using separate horizontal and vertical sync whether it be positive or negative.

I have lost the negative composite war with the CBO Electrohome G07

But running James ZOOQ board with the provided header for positive and horizontal syncs with this monitor, James if you catch this, you sir, are the man!!!

The following pics were taking cold flipped the switch after 6 hours or longer with no adjustments made after the final adjustments were made when i powered off over 6 hours ago..

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I wouldn't say that its exactly 100 and 10% perfect, but im happy!!!! And for me, not being a huge monitor repair person... this is good enough for the crazy Russian girls i date!!!
 
Thank you for documenting all of this. Great work. This could prove very useful down the road for others.
 
Thank you for documenting all of this. Great work. This could prove very useful down the road for others.



For sure!!! I hope so, i try and leave a string of info when and where i can so that people who search for it here may find what they need...

Which reminds me... at some point i should create a search term text and past it here....

The thing is somebody looking for G07 cbo sync curl issues with jrok boards may not come looking in resto/deconversion threads for that info...

I think creating a search term list and pasting here may help lead them to the information if i do that because the search function here is not the greatest.....

And to prevent somebody from getting frustrated and entering all kinds of key words if i list all possible terms maybe they will hit paydirt the first time, and ease the frustration..

Not sure but may be worth it....

I did reach out to Arron Craftymech this morning mentioning all this sync circuit stuff with these new boards clashing with old monitors....

He was very enthusiastic about incorporating that into the bitkit it seams, and gave an attaboy...

I cant wait to start a project that picked up specifically because of that board!!!
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That is going to be fun!!
 
24 hour later cold start up, like i boss!!

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Its safe to say i can push it in the line up with out fear of having to pull back out for adjustments. Ill consider the monitor part of this deconversion closed...

From here on, I need to get the back door painted and installed and i would like to finish building a dedicated control panel using the correct CPO...
 
This is great! Glad you got the monitor sorted out. Great work and aas others have said, thank you so much for sharing the journey! I will be pitting decals on my System 1 cabinet shortly, and some of the advice you gave will surely come in handy!

Chris
 
A quick note about positive horizontal vertical syncs header on the Jrok ZooQ board for Electrohome CBO chassis....

Its my opinion that this is the only way to fly, and here is why......

In general every adjustment made seemed to have a much broader range of adjustment, what i mean by this, is that when turning a pot, the adjustment is less, abruptly changed, and is much easier and smoother to dial in. Also, because the 2 sync circuits are now separated, instead of a single composite negative looped at the input, most adjustments dont even effect other adjustments.

Before on the single negative composite every time one pot was turned, it seemed as though a fine correction needed to be made on another, and it felt like pulling strings everywhere, to get things stabilized and centered, and the width and hight correctly adjusted. To properly fill the screen.

Using the the separate horizontal and vertical positive sink is freakin amazing when it comes to using this newer FPGA hardware with the electrohome G07 cbo....

I really hope that all of these new boards coming out are incorporating this.

Up untill now, Electrohome monitors and this new hardware have not worked out, I've always ended up going to a k4900 or k7000 Wells Gardner.

I tried this and could not get the G07 in my Qix to sync with the ZooQ board using separate positive syncs. I hooked these up to the positive and negative syncs on the monitor and got a scrolling diagonal image at best.

Went back to negative composite off the jamma harness/ZooQ edge connector and it's pretty good aside from some curl that probably will only be fixed by a cap kit.
 
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