03-17-2016, 01:12 PM
Stan, there are a pair of .015mfd caps across the primary of the power transformer so across the line. This pair has a common connection to the chassis and this will pass some AC to the chassis, thus making for a small spark when you try and ground the chassis.
Bendix 0626. RCA 8BX5. RCA T64
Philco 41-250. Philco49-500
GE 201. Philco 39-25
Motorola 61X13. Philco 46-42 Crosley 52TQ
Philco 37-116. Philco 70
AK 35 Philco 46-350
Philco 620B. Zenith Transoceanic B-600
Philco 60B. Majestic 50
Philco 52-944. AK 84