As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRST OFFICER'S EHSI WENT BLANK ON TAKEOFF GOING THROUGH 500 FT. RETURNED TO SFO. INSTALLED KNOWN SERVICEABLE RELAYS AT K0394 AND K0396. NR 2 EHSI SCREEN REMAINED UNAFFECTED BY AUX GENERATOR POWER TRANSFERS. HEADING INDICATION CHECKS GOOD.