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Bally 6 digit display
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Question
lentildude
Been trying to fix one of my Matahari score displays
It is totally black, all other displays working fine.
I have swapped out the BCD chip, replaced a few transistors in case some digits fire up, 100k resistors swapped, but still black
There is 180v on the HV, other end of Zener is 80v - same as other displays.
How can you confirm the gas discharge screen is faulty??
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