02-19-2009, 08:32 PM
Mine has a 3903-R as part ( 18 ) also, with the letter R scratched into the side of the block. It has lugs at 4, 7 and 8.
Lug 4 has a wire running to volume control (20), also mica condenser (19) from lug 4 to ground at the mounting lug of ( 18 ).
Lug 7 has resistor (17) connected to it.
Lug 8 has resistor (50), a wire from multi-section condenser (30) and a wire running to resistor (49) connected to it.
The .01 uF condenser inside the block connects to lugs 4 and 7.
Hope this helps,
Ron.
Lug 4 has a wire running to volume control (20), also mica condenser (19) from lug 4 to ground at the mounting lug of ( 18 ).
Lug 7 has resistor (17) connected to it.
Lug 8 has resistor (50), a wire from multi-section condenser (30) and a wire running to resistor (49) connected to it.
The .01 uF condenser inside the block connects to lugs 4 and 7.
Hope this helps,
Ron.
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Ron Ramirez
Ferdinand IN