WG 4600 line on screen

pistolpete

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My monitor has developed a "horizon" line at the bottom. (pics attached). Sort of a curved orangish arc along the bottom. Also, the knob on the flyback does nothing - neither brightness nor focus. Colors are off but it's hard to quantify. Any ideas?
 

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First, turn the blue down. Then let's see what it looks like. There is a brightness pot on the neckboard, and a screen control pot on the left daughtercard...
 
First, turn the blue down. Then let's see what it looks like. There is a brightness pot on the neckboard, and a screen control pot on the left daughtercard...

Thanks, I found the brightness, etc. on the neckboard. These frogger monitors are at a wicked angle in there. Here it is with the blue turned all the way down, and a closeup. I couldn't get the water blue without the road also going blue. It is actually in focus, the blurriness is a combination of the game running and my shaky camera work.

Also, Thanks to whoever posted the pdf manual for these monitors in another thread!
 

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monitor

Looks like you need to replace the cap(33uf) under the right daughter board. gives a curve to the picture when going out.
check your sync wires and see if one sync wire or two hook up works better.
 
Looks like you need to replace the cap(33uf) under the right daughter board. gives a curve to the picture when going out.
check your sync wires and see if one sync wire or two hook up works better.

I found the one you're talking about. Looks like it's C614, kind of pushed onto it's side to make room for the daughter board. I think I'm going to do a full cap kit on this one. Was just avoiding it since my soldering skills suck bad and this monitor had an awesome picture before this showed up.

On the sync thing, are you saying to bridge 2 pins with the sync wire to see if that helps? I'm still trying to trace down what all the connections to these different boards are. I'm kind of new at this and every monitor I have is different, especially my 2 frogger machines.

Thx for the help!
 
C614 will only solve the bowing problem at the right, not the line at the bottom. Also, if you're working on a 4600 and you need to replace a cap... do not pass go, do not collect 200 microfarads - replace all of them. You don't want to pull that chassis out any more than you have to.

Do the usual, replace all the caps, reflow daughtercard pins on both the main chassis and the daughtercards, and go over everything for cracked solder joints. Then tweak and adjust for best picture. You may have to adjust the horizontal frequency a bit to straighten the image out.

-Ian
 
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