KPA500 build problem - no out put, no PC connection

[Stan AE7UT]

I just finished my KPA500 and am having some trouble.
I'm using it with a K3 and the Aux cable.

It powers up fine.  HV is 73.0, FAN CTL doesn't turn fans on.
The fan does not run when I turn it off as stated in the manual.
The KPA500 utility can't connect with it.
Using the same cable I can use the K3 utility without a problem.
The K3 switches the bands on the KPA500 and the KPA500 switches the K3 bands.
The K3 indicates when I switch from standby to operate.
On standby I can operate with no problem.

I have removed the front panel and reseated the cables twice.
I did not pull the transformer or play with the I/O module.
I'll do that tomorrow when I get a little more time.

Anyone have similar problems?  Any thoughts?
Of course I'll call Elecraft for help if nothing seems to work.

73
Stan AE7UT

[N5GE-2]

Regarding the fan:  Pull the top cover and make sure the fan's power
cable is plugged in.  It is easy to unplug the fan power while
installing the rear panel.

 

On Tue, 9 Oct 2012 00:13:55 -0700 (PDT), Stan AE7UT
<[hidden email]> wrote:

>I just finished my KPA500 and am having some trouble.
>I'm using it with a K3 and the Aux cable.
>
>It powers up fine.  HV is 73.0, FAN CTL doesn't turn fans on.
>The fan does not run when I turn it off as stated in the manual.
>The KPA500 utility can't connect with it.
>Using the same cable I can use the K3 utility without a problem.
>The K3 switches the bands on the KPA500 and the KPA500 switches the K3
>bands.
>The K3 indicates when I switch from standby to operate.
>On standby I can operate with no problem.
>
>I have removed the front panel and reseated the cables twice.
>I did not pull the transformer or play with the I/O module.
>I'll do that tomorrow when I get a little more time.
>
>Anyone have similar problems?  Any thoughts?
>Of course I'll call Elecraft for help if nothing seems to work.
>
>73
>Stan AE7UT

Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

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[DK2GZ]

Hello
 
I had a similar problem, see:
 
http://www.mail-archive.com/elecraft@.../msg123327.html
 
73 de Harry,  DK2GZ
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[Stan AE7UT]

All is well in Zion!

Thanks to all you Elecrafters for your help.
I took off the transformer and looked at the I/O board.
The 10 wire ribbon cable was loose.  How the "H" did that happen?
Well, I pushed it down - reassembled and it appears to be working FB.

The nice thing is I was not at all nervous about whether "we" could get it
working.  The first kit I built had me a bit on edge.  I really didn't want to
spend $500 dollars on something I would never get working.  After some
troubles with my K1 and the great support of this group and Elecraft, I
really know that these rigs are going to work - despite my ineptitude.

Thanks again.
73
Stan AE7UT