(Topic ID: 229362)

LOTR resets

By jimy_speedt

6 months ago

Topic Stats

  • 12 posts
  • 8 Pinsiders participating
  • Latest reply 6 months ago by LOTR_breath
  • Topic is favorited by 2 Pinsiders


Linked Games

#1 6 months ago


When I play with one player, I never have reset issues. From 2 to 4, it happens randomly and keeps resetting for multiple times.

I do not have a clue about the origin of this.

Can someone help me ?

#2 6 months ago

Original board or Rottendog Board?

#3 6 months ago

Ive seen the plug get brittle and cause resets for the power going into the cpu. Perhaps a 2 to 4 player game taxes the cpu current wise to push it over the edge.

#4 6 months ago

This is the original Stern board. The resets occur always in multiball mode

#6 6 months ago

First thing to do is to reseat J16 on the driver board, the connector tends to get brittle and burnt causing low voltage resets.
See http://pinwiki.com/wiki/index.php?title=Sega/Stern_White_Star_Repair for more info, section 4.3

It's easy to confirm that it's a low voltage reset, just remove the backglass and pay attention to the watchdog LED.
I'd not start playing with adjusting the voltage with the R116 adjustment pot, at least not before you've validated that it's too low on the driver board

#7 6 months ago

Mine just did this tonight thanks for the info

#8 6 months ago

The fluorescent lamp in all sterns over time will actually degrade the plastic connectors. I would upgrade to led in place of the fluorescent tube.

#9 6 months ago

I checked the 5vdc on the CPU based on the picture of pinwiki, I measure 5,03vdc.

I put some contact spray on j16.

Lets see what happens

#10 6 months ago

Do you have a lot of powered mods installed?

#11 6 months ago

No mod at all

#12 6 months ago

I have seen resets on a Monopoly and a Shrek caused by the fluorescent tube circuit. Transformer, starter, tube can all be bad.

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