Whirlwind
Williams, 1990You're currently viewing posts by Pinsider loren3233.
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Question for you. What chip did you replace on the MPU board (at U what on the MPU board)? I understand the chip that controls the ram's enable line as stated above but where is that at on the board?
If you don't mind letting me know.
Thank you, I am having a similar issue and hoping this will help.
On boot up mine does the slow flashing on diagnostics but after about 15-20 seconds it finishes the boot up and plays normally. I may try replacing U35 and update if it fixes my issue as well. I will update when completed.
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Vacaville, CA