[TenTec] Need Century 21 help...

[jdanter]

John,
Here are the voltage readings for IC-1, LM3900, the CW filter, on the Audio Preamp board.
[Receive, DRIVE fully CCW.]

pin-
1- 0.6 [pin left of notch or dimple on chip]
2- 0.6
3- 0.6
4- 5.5
5- 5.5
6- 0.6
7- 0
8- 0
9- 5.3
10-0.1
11-0.6
12-0.5
13-0.6
14-11.5

The LM3900 chip is very inexpensive, approx $1.00.
Get a socket too. Future replacement will be easier.

73 NE4TT jamie

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