Help with Horizontal Cap kit please - GO7

jonathan1138

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My Spy hunter has a PCB related White Bar at the bottom of the monitor, about an inch - inch and half thick. This white bar is not going away - its part of the PCB - if i use Horiz Freq that white line wraps around to top of screen.

I've managed to stretch Horizontal (the monitor is mounted vertically, so horiz is the top / bottom) to the far edge of the screen successfully, but as noted the white bar is still there.

For my next trick, i want to stretch out the pic further - by an inch or so - to hide that white line once and for all!

I ordered this kit:

http://therealbobroberts.net/width.html

Which is the Horizontal Cap kit. On my G07, C515 is currently a value of 534k.


Before i start to go mad experimenting, can someone here please suggest the best values to start off with to stretch the image a little more and also explain what "HEAVIER" is? The kit includes the following:

* Width Cap Kit
* F104K 250V
* F104JK 250V (Heavier)
* F224K 250V
* F224K 630V
* F334K 250V
* F.47K 250V (F474K)
* F.47JK 250V (Heavier)
* F474K 630V

(I am guessing add a 104k to the existing 534k and step up from there based on what i see - is this ok?)

Thanks.
 
Not certain what Bob means by "heavier", but I'd guess "heavier duty."

I think more capacitance normalls -> narrower and less capacitance -> wider, but I'm not sure (and it might depend on the chassis circuit design).

If I'm right, adding that 104K in parallel to your current width cap would increase the capacitance and make the pic narrower.

I think you may want to sub in a lower capacitance to make the image wider. But again, I might have this backwards and/or some monitors might work reverse fro others, so your plan to tack that 104K in sounds fine to me... let us know what actually happens.
 
FWIW: "534" means 53x10^4 or 530000, which is in pF (picoFarads), which is equal to 0.53µF (micro-Farads). I think the K & J refer to tolerances.

Also FWIW: I'd suggest not being too shy about changing the value. My K4600 was too wide (even at min coil adjust) with the original 0.39µF cap. I swapped in a 0.47µF and I couldn't really see any difference. I still need to try adding another in parallel (I don't have any higher value PP caps), but it's tricky on my chassis because of where that cap is mounted (other components close beside it).

I'd just try the 0.47 instead of the OEM 0.53 before getting fancy with tweaking and paralleling.
 
If I were you. I'd save time by installing the .33 and adjust it as you need. You will notice that one step up (or down) in value usually only increases (or decreases) the size on average of 1/4" on each side. You may need to go as low as .10 if it's 1 inch. You should just install the .10 (104) first then go from there.
 
Again, thanks for the tip - will start low. Thats exactly the guideline i needed (and will help others i hope in the future).

I had enough of taking out that chasis (even though its so damn easy!) and experimenting so far - the closer i get the first time out the better.

Didnt get the parts yesterday, should get them today.

As soon as i get the monitor adjusted the way i want it, its 100 percent 'fixed' and i can "push the beast to the wall" (its a cockpit, and taking up all this room i need for other projects).

Will post results.
 
Closure here happy to write.

Started with 474k (down from 534k) - took the bar down an inch.

Pulled the chassis, pulled the 474 and went to 334 (expecting the experimenting to last awhile).... and that did it! No more white line, horizontal looks perfect. Very happy with the results.
 
Closure here happy to write.

Started with 474k (down from 534k) - took the bar down an inch.

Pulled the chassis, pulled the 474 and went to 334 (expecting the experimenting to last awhile).... and that did it! No more white line, horizontal looks perfect. Very happy with the results.

Gonna do the same thing....
Old thread, but thanks!!
 
That's why we have this forum. Can't tell you how many times I have found the answer to a question here from somebody else. Can't tell you how many times I have found the answer and it was one I had written. Didn't even remember writing the answer. Crazy huh?
 
G07 running a 19 in 1 jamma

I am missing about a 1 1/2" on the right and 1" on the left side of my horizontal cab.
Do you think this will work for me also?
 
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