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Philco 90 Ball of Confusion!
Ron Ramirez
Silent Key
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Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#4

02-19-2009, 09:32 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.
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Ron Ramirez
Ferdinand IN
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Messages In This Thread
Philco 90 Ball of Confusion! - by madghost - 02-19-2009, 12:59 AM
Re: Philco 90 Ball of Confusion! - by Ron Ramirez - 02-19-2009, 06:57 AM
Re: Philco 90 Ball of Confusion! - by madghost - 02-19-2009, 09:08 AM
Re: Philco 90 Ball of Confusion! - by Ron Ramirez - 02-19-2009, 09:32 PM
Re: Philco 90 Ball of Confusion! - by madghost - 02-20-2009, 09:15 AM



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