[Elecraft] K2 AGC off problem

[Ken K3IU]

Hi Joe:
Sounds exactly like the problem I had with 5196. The problem was fixed by
replacing X1 on the Control Board. You will probably find that CtrlBd-U2-1
goes to about 6 volts when you turn the AGC OFF virtually shitting down the
IF amplifier. I encourage you to communicate with Gary
(support at elecraft.com) regarding this problem. Yesterday, someone reported a
similar problem with a close serial number(s/n5219).
73, Ken K3IU 

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of jo benoit
Sent: Monday, February 27, 2006 12:00 PM
To: elecraft mailman qth
Subject: [Elecraft] K2 AGC off problem

Hi Elecrafters,
When I turn the AGC to off pushing pre/att and agc together, the display
reads "off", but the audio mutes and s-meter goes to maximum .
I reheated the solderings on U1 C10 and D2.
Voltage on U1 pin 2 is 1.44V when agc slow or fast and 0.52V when agc is off
The other side of D2 , the /AGC OFF signal is 5.0V when agc slow or fast and
0.004V when agc is off.

Anyone an idea ?

joe  on5ao  K2#5237

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