Build Your Own Arcade Controls Forum
Main => Monitor/Video Forum => Topic started by: Oni2382 on September 06, 2008, 11:26:15 pm
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What's up everyone?.
I need a little help with the cap kit I'm doing on the WGK7000 chassis. On the neck board I am replacing Cap C204. However, on the board their is no distinction for polarity (+ or -) could SOMEONE please point me in the correct direction. Every other cap on the main chassis has the + marked except C204 one the neck board. I downloaded the PDF manual and that has no distinction either. I managed to replace the other caps successfully and I won't put this last cap in until I know the correct placement. I carelessly removed the cap without looking at how it was oriented, a valuable lesson learned. Thanks for any and all help.
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take a quick look at the foil side of the board .
the neg side of the cap connects to gnd .
the pos side will have a trace to p202 pin 3 and to a common side of R207,8,9.
the cap is the rgb decoupling/filter for the driver pwr supply
schematic here : http://jstookey.com/arcade/WG_25k7191/k7191-complete_lg_.jpg
qrz
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Your a Life saver thanks. I owe you one :cheers:
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Early production k7000 did not have an electrolytic capacitor there. It was a ceramic disc type. The manuals didn't show it since it was one of those "production improvements" Wells is known for. The only place I was able to find it shown on a schematic was the 25k7191 schematic.
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Early production k7000 did not have an electrolytic capacitor there. It was a ceramic disc type.
and change the ceramic cap whenever it is encountered...... ;)
qrz