(Topic ID: 35328)

Vid's Guide to Bulletproofing Williams System 3-7


By vid1900

8 years ago



Topic Stats

  • 964 posts
  • 183 Pinsiders participating
  • Latest reply 9 days ago by Pinball_Postal
  • Topic is favorited by 567 Pinsiders

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There are 964 posts in this topic. You are on page 20 of 20.
#951 25 days ago

Is it still frozen, or was it a one time occurrence?

#952 25 days ago
Quoted from vid1900:

Is it still frozen, or was it a one time occurrence?

If I power cycle it and start a new game, I can double flip before plunging the ball and it will lock up and kill the displays.

#953 25 days ago
Quoted from desertT1:

I was playing Laser Ball today and I double flipped and the game froze. Reading Pinwiki I see two different pieces of advice, but I'm not quite sure what it is referring to when it says "rebuild the solenoid power circuit" in 6.13.7. That is the lower info with the blue tick mark.
The upper info is from 6.7, and I can do that too, but need to know what to check/replace for the solenoid power circuit.[quoted image]

don't mean to hijack your thread vid1900.

the solenoid power circuit is 25.5VAC from the transformer going to BR2 mounted on the ground plane and it being converted to the 28VDC for the solenoids, not much to it.
i believe in that text marked with blue they are referring to the logic circuit, which is covered in this thread post #80

#954 25 days ago
Quoted from Rikoshay:

don't mean to hijack your thread vid1900.
the solenoid power circuit is 25.5VAC from the transformer going to BR2 mounted on the ground plane and it being converted to the 28VDC for the solenoids, not much to it.
i believe in that text marked with blue they are referring to the logic circuit, which is covered in this thread post #80

Thanks, I will follow that and get the parts suggested.

#955 25 days ago

Another vid1900 appreciation post.

Picked up a Gorgar that would turn on, but nothing would work. Rebuilt according to this guide, and BAM, now all I gotta do is adjust some switches.

Thank you!

1 week later
#956 12 days ago

So I rebuilt the power supply board caps and played a few games fine. Today I turned it on, added some credits and walked away for a while. Came back to this. It froze with zero gameplay. Is that a clue to anything?

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#957 12 days ago

Bad connectors, bad RAM, bad sockets....could be 100000000 things

If it ever happens again, test if you still have 5v at the mpu

#958 12 days ago

Is there a section of the forum that shows how to test 5 volts at the mpu, system 6?

#959 12 days ago
Quoted from trk12fire:

Is there a section of the forum that shows how to test 5 volts at the mpu, system 6?

You can use the test points on the board, or the connector that leads from 3J6 on the Power Supply

#960 12 days ago

Nice to have you back Vid

#961 12 days ago

Here are the voltage based test points on the CPU board. Meter on DC. Black lead on ground. Red on the 5V or 12V test point.

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#962 11 days ago
Quoted from Schwaggs:

Here are the voltage based test points on the CPU board. Meter on DC. Black lead on ground. Red on the 5V or 12V test point.[quoted image]

Thanks Schwaggs, that helps. I was scared to ask.

#963 9 days ago

I do not know if this has already been discussed, but I would like to do it.
Sometimes transistors (Tips122, 2n2222a) circuits and other components, as already discussed, wear out over time, note that if you put a new Tip122 and a new 2n2222a, it will make the coils or things that are activated with them, take more force.
Besides in my opinion it looks more beautiful like this with new components (I have only changed the ones that my machine uses, I see it unnecessary to change the ones that it does not use)

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#964 9 days ago

What, what, sorry I couldn't resist it. Some times one will introduce more problems than if they had left working components alone. Ymmv but mass replacement can end in disaster.

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