Subject: Philco Service Hints & Tips, Number 40 THIS APPIES TO ALL RADIOS THAT USED THE 35Z5 RECTIFIER AND AS I RECALL A #47 PILOT LIGHT.BACK THEN WHEN THEY FIRST STARTED USING THE 35Z5 AND #47 PILOT LIGHT THIS WAS ONE OF THE MOST COMMON PROBLEMS THAT CAME INTO MY SHOP http://www.philcorepairbench.com/tips/svctip40.htm WALTER-W2WIQ