Check 5volt power...

(Topic ID: 222288)

Check 5volt power...


By BallyWilliams

3 months ago



Topic Stats

  • 5 posts
  • 3 Pinsiders participating
  • Latest reply 3 months ago by Rdoyle1978
  • No one calls this topic a favorite

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#1 3 months ago

Hey there

My bally williams cv recently stopped working. Someone online is kindly helping me but they only have limited time.

They think the cpu has stopped working.
They have asked me to check the 5volt power.

I've not down this before and am waiting on a new manual.
I'm sure it's a super noob question which I did google first with no luck.

So where is it and how do i check it ? Please..
(I have a volt meter if that's relevant).

Also is it grounded ? (as I've been shocked before).

Thanks

#2 3 months ago
Quoted from BallyWilliams:

Hey there
My bally williams cv recently stopped working. Someone online is kindly helping me but they only have limited time.
They think the cpu has stopped working.
They have asked me to check the 5volt power.
I've not down this before and am waiting on a new manual.
I'm sure it's a super noob question which I did google first with no luck.
So where is it and how do i check it ? Please..
(I have a volt meter if that's relevant).
Also is it grounded ? (as I've been shocked before).
Thanks

There is a 5v test point on the power driver board (the largest board in the back box)

Touch your red multimeter tip to that point, and the black to a ground braid, and check the voltage. Remember you may need to adjust the multimeter settings

Also you can find the manual on Ipdb

Http://Ipdb.org

Edit: if you were asking how to test 5v on the CPU board, this thread describes it:
https://groups.google.com/forum/m/#!msg/rec.games.pinball/GybGn7YSkZM/lGFRIl7lJ2gJ

This is not a super straight forward thing because you need to figure out the pin leg numbering, make sure you read that part thoroughly.

You may also want to post more details about the problem, as it is likely it is NOT the CPU and likely is something far more simple

#3 3 months ago

Thanks for reply.

You don't happen to have a link to a how to for testing board voltage so I can monkey see and do haha

The problem is...

Had all my head circuit boards checked.
They came back fine. Some repaired.
It all worked for a day.
Then it all stopped.

Now when you turn cv on the dmd does nothing. The only light if the coin slot.
There is a single bong sound.
Nothing will respond.
Some lights on the head boards light up and some flash.

Here's a video....94mb download

I'm still learning basics so rely on YouTube videos lol

https://my.mixtape.moe/qvlksz.mp4

#4 3 months ago

Use a multimeter and test one lead on the test point and the ground lead on the ground braid.

#5 3 months ago
Quoted from BallyWilliams:

Thanks for reply.
You don't happen to have a link to a how to for testing board voltage so I can monkey see and do haha
The problem is...
Had all my head circuit boards checked.
They came back fine. Some repaired.
It all worked for a day.
Then it all stopped.
Now when you turn cv on the dmd does nothing. The only light if the coin slot.
There is a single bong sound.
Nothing will respond.
Some lights on the head boards light up and some flash.
Here's a video....94mb download
I'm still learning basics so rely on YouTube videos lol
https://my.mixtape.moe/qvlksz.mp4

If there is a sound and some lights go on, I don’t think it’s the CPU, it just sounds like you have a short. Paging ltg
!

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