[Elecraft] K2 AGC off problem

[Ken K3IU]

Obviously, I meant "shutting" down :-(.

Also, Joe, I should mention that you should check and double check component
placement and value as well as check all solder joints.  

73, Ken K3IU

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Ken K3IU
Sent: Monday, February 27, 2006 1:40 PM
To: 'jo benoit'; 'elecraft mailman qth'
Subject: RE: [Elecraft] K2 AGC off problem

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

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around
http://mail.yahoo.com _______________________________________________
Elecraft mailing list
Post to: Elecraft at mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft    

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

_______________________________________________
Elecraft mailing list
Post to: Elecraft at mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft    

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com