Flight 2000
Stern Electronics, 1980machine was working great, been a long time since played and pressed the two white buttons in door. all scores went blank and nithing happens.. turn machine off, lights come on two bings. nothing else. what happened by only opening door and pushing two tall white buttons??? lights on, two bings, no scores, no flippers, no can play.
Sounds like a 5101 cmos chip bad at U8 location on the MPU Board.
Nvram is available at http://lockwhenlit.com/
If you’re going to fix it yourself the Pinwiki is very helpful: https://www.pinwiki.com/wiki/index.php?title=Bally/Stern
It’s also a good idea to inspect your boards for signs of alkaline damage from battery leakage.
You can find a manual and schematics at IPDB: https://www.ipdb.org/machine.cgi?id=887
The 2 "dings" you hear correspond to the "flashes" on the MPU and it's how the members above determined the possible culprit
You're getting the 2'nd flash but not the 3'rd
https://www.pinwiki.com/wiki/index.php?title=Bally/Stern#Bally_.2F_Stern_MPU_Board_LED_Flash_Sequence
Can you provide an image of the circuit boards in the backbox ?
looking to see if the original battery is there that should be removed
https://www.pinwiki.com/wiki/index.php?title=Bally/Stern#The_Single_Largest_Culprit_in_MPU_death
the Stern MPU-200 board would use a kind of special adapter board
Pinside member Barakawins1 seems to only have it listed as a single unit on his web site but not here on Pinside or Ebay so I dunno if you would need to resort to another "battery removal technique" listed in Pinwiki
scroll down to:
Stern MPU-200 NVRAM adapter.
One adapter replaces both 5101 RAMs at U8 & U13
Quoted from chad:Sounds like a 5101 cmos chip bad at U8 location on the MPU Board.
Nvram is available at http://lockwhenlit.com/
I looked at the site & it says Stern MPU-200 is supported, I don't know if you can use just one card or if you would need two http://lockwhenlit.com/anyPinlist.htm ,
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Kittery, ME
