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(Topic ID: 35328)

Vid's Guide to Bulletproofing Williams System 3-7

By vid1900

11 years ago


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#769 5 years ago
 
MDK

WonderMellon

Pinside+ Addict

US Columbia, MD

5y 50,650 194 9

I am working through this post on a High Speed that has sat for quite some time. Before and after replacing caps, I am getting 12v on the 5v test point. I think the transistor is bad. Have a new one on the way.

I assume the high voltage changes apply to system 11, as well. My problem is the component layout is slightly different from the image on page 2 of this post. I am not able to find a component layout for the System 11 power board. Can someone point out the resistor and diode numbers or point me to an image with the components labeled?

C5151D0F-4274-46A3-943C-745B16C7FEC7 (resized).jpegC5151D0F-4274-46A3-943C-745B16C7FEC7 (resized).jpeg
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#771 5 years ago
 
MDK

WonderMellon

Pinside+ Addict

US Columbia, MD

5y 50,650 194 9

Atari_Daze
Thanks! I had seen a page like that before, but it didn’t have the labels. That is very helpful.

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