(Topic ID: 244053)

Evel Knievel: Bally rectifier board, bad TP3


By Brewchap

87 days ago



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  • 43 posts
  • 5 Pinsiders participating
  • Latest reply 52 days ago by Quench
  • Topic is favorited by 4 Pinsiders

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#8 79 days ago

Test Point 3 is supposed to be 5VDC....................Not 11.5. Test point 1 should read the same as TP 3. Test point 5 is the input to the 5V regulator circuit and should read 11.5 or thereabouts.

A mod to these driver boards is to tie TP1 and 3 on the wiring side together with a jumper to improve reliability --not relying upon the connector.

What does test point 1 and 5 read on your meter?

#10 79 days ago

Sorry my mix up.

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