As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ERRATIC RADAR ALT. OPERATION AT ZERO AND ABOVE 2000FT. RESOLDERED ALL WIRES GOING TO STRIP LINE ASSEMBLY. REPAIRED PROBLEM. VIBRATED AND COOKED UNIT TO VERIFY NEEDLE STABILITY. REPLACED BROKEN CAPACITOR C701. REPLACED RESISTORS R518,R519,R534 AND R260 TO INCORPORATE MOD 10. BENCH CHECK GOOD.