(Topic ID: 288330)

Smoky Smell: Something Wrong with Boards?


By JCO25

6 days ago



Topic Stats

  • 18 posts
  • 8 Pinsiders participating
  • Latest reply 3 days ago by JCO25
  • No one calls this topic a favorite

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#1 6 days ago

So I just played some Haunted House and Rocky and Bullwinkle for the first time in a while.
Haunted House has glitched out in the middle of a game, has happened before. I let the machine go.
After an hour, I smell smoke. Shut the machines off, let in some fresh air.

So,
1) Could it be battery leakage from a MPU board?
2) Something else in Haunted House burning?

Please help. Feedback would be appreciated. Thanks kba78

#2 6 days ago
Quoted from JCO25:

So I just played some Haunted House and Rocky and Bullwinkle for the first time in a while.
Haunted House has glitched out in the middle of a game, has happened before. I let the machine go.
After an hour, I smell smoke. Shut the machines off, let in some fresh air.
So,
1) Could it be battery leakage from a MPU board?
2) Something else in Haunted House burning?
Please help. Feedback would be appreciated. Thanks kba78

Can you remove the Backglass and inspect the boards? Pictures would help diagnose the issue possibly.

Another possibility is the pesky grounding issues of Gottlieb’s.

#3 6 days ago

My first thought is the caps on power supply and bottom of cabinet are original and dried out. Time to refresh things.
-Mike

#4 5 days ago

Pictures will be up later. Did look at battery connector, one battery has corrision. Will replace them. Maybe that will help as well?

#5 5 days ago

Sorry. The pictures and batteries I am talking about are for Haunted House.

#6 4 days ago

Pictures of boards and battery connector to Haunted House. Will replace the batteries tomorrow and see what happens.

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#7 4 days ago
Quoted from JCO25:

Could it be battery leakage from a MPU board?

Uh..no. Only a locked on transistor, electrolytic capacitor exploding, burnt coil because of a transistor would be the possibilities.

Are you sure it was Haunted House? Did you open the coin door on R&B and have a whiff?

#8 4 days ago

If it really was Haunted House, this R10 on your power supply seems like a potential. Not sure it is just the light, but looks burnt in the middle of the part.

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#9 4 days ago

You weren't burning incense to get rid of the weed smell and just forgot because you were, you know, smoking weed?

#10 4 days ago

Nothing like that "Essence of Allen-Bradley".

As for Haunted House, they all do that. You have a fried kickback coil and maybe a bad driver transistor. Many times, the logic will keep the solenoid energized frying it even though the driver transistor is still good.

I'd consider underfusing the controlled solenoids.

#11 4 days ago

mrbally Which board would the bad driver be on?

#12 4 days ago

This transistor next to the J5 connections looks a bit toasted.

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#13 4 days ago
Quoted from twhtalm:

This transistor next to the J5 connections looks a bit toasted.
[quoted image]

If so, that is disappointing, as that new board design is supposed to protect against that type of issue.

#14 4 days ago
Quoted from twhtalm:

This transistor next to the J5 connections looks a bit toasted.
[quoted image]

The transistor that says IRF530?

#15 4 days ago

I'd inspect those bds. with the power on. That way you can see/smell what's going on.

#16 3 days ago
Quoted from MrBally:

Nothing like that "Essence of Allen-Bradley".
As for Haunted House, they all do that. You have a fried kickback coil and maybe a bad driver transistor. Many times, the logic will keep the solenoid energized frying it even though the driver transistor is still good.
I'd consider underfusing the controlled solenoids.

Would that be for the MPU board?

#17 3 days ago

Driver transistors are on the Driver Board. Game control logic is on the Control (MPU) board.

I am assuming original boards. Not an Aftermarket "all in one" board.

#18 3 days ago

Gotcha. Will look into. Thank you mrbally

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