K2 - No power control on SSB

[Ben.Russell]

I have K2 ser# 5614. I am unable to change power on SSB, full power out.
Works in CW and tune, same problem with or without ATU.
in TX:
U1-2 .5v
U5.5 .5v

U1, Q1 and Q2 have been replaced. Any idea where I should look next?

Ben NE5W

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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

[Don Wilhelm-4]

Ben,

Look at the ALC components of the KSB2 adapter.

73,
Don W3FPR

Ben.Russell wrote:

> I have K2 ser# 5614. I am unable to change power on SSB, full power
> out. Works in CW and tune, same problem with or without ATU.
> in TX:
> U1-2 .5v
> U5.5 .5v
>
> U1, Q1 and Q2 have been replaced. Any idea where I should look next?
>
> Ben NE5W
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> 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: [hidden email]
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

[Ben.Russell]

Don,
Checked placement and values of all ALC components, replaced D1 and D2.
D1 anode 5.4v
D1 cathode 5v
D2 anode 5.3v
D2 cathode 4.9v
U2-5 .5v
U1-2 .52v
Q1 emitter .52v
Q1 base 1.16v
Q1 collector .5v
Q2 emitter 4.7v
Q2 base 5.3v
Q2 collector 7.2v

Thanks for the quick response,

Ben NE5W
----- Original Message -----
From: "Don Wilhelm" <[hidden email]>
To: "Ben.Russell" <[hidden email]>
Cc: <[hidden email]>
Sent: Monday, December 17, 2007 9:09 PM
Subject: Re: [Elecraft] K2 - No power control on SSB


> Ben,
>
> Look at the ALC components of the KSB2 adapter.
>
> 73,
> Don W3FPR
>

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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

[Ben.Russell]

Any other ideas?
 
Ben NE5W

----- Original Message -----
From: "Ben.Russell" <[hidden email]>
To: <[hidden email]>
Cc: <[hidden email]>
Sent: Monday, December 17, 2007 10:59 PM
Subject: Re: [Elecraft] K2 - No power control on SSB

> Don,
> Checked placement and values of all ALC components, replaced D1 and D2.
> D1 anode 5.4v
> D1 cathode 5v
> D2 anode 5.3v
> D2 cathode 4.9v
> U2-5 .5v
> U1-2 .52v
> Q1 emitter .52v
> Q1 base 1.16v
> Q1 collector .5v
> Q2 emitter 4.7v
> Q2 base 5.3v
> Q2 collector 7.2v
>
> Thanks for the quick response,
>
> Ben NE5W
> ----- Original Message -----
> From: "Don Wilhelm" <[hidden email]>
> To: "Ben.Russell" <[hidden email]>
> Cc: <[hidden email]>
> Sent: Monday, December 17, 2007 9:09 PM
> Subject: Re: [Elecraft] K2 - No power control on SSB
>
>
>> Ben,
>>
>> Look at the ALC components of the KSB2 adapter.
>>
>> 73,
>> Don W3FPR
>>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> 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: [hidden email]
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