UPDATE! Found a thread on Badcaps that discusses the 1 Blink problem . It was determined to be corrupted data from IC9304 which is an EEPROM. One poster did a swap from another board into a dead board and it worked!
IC9304 is available from a number of sources:
https://www.ebay.com/sch/i.html?_fro...c9304&_sacat=0