[Elecraft] KPA500 Kit #400 problems

[DK2GZ at aol.com]

Hello 
 
just finished the kit #400 but have someproblems:
 
Fan do run at all:
 
after 5 minute CQ I got the high temp message. I checked then the fanspeed  
levels, nothing happend
Then I did same further investigation.  

I checked the U3 on the power supply board. The tab should be isolated  
from the srew, I get around 900 to 1200 ohm resitance with the DMM when I put  
the leads on the tab and srew.
 
Next I checked there the fan pluged into the power supply module. Should  
als be o.k. I got a 3 PIN connector an the red wire is close to the big black 
 C(elko). P7 there has no wire connected.

 
Bandswitching with the K3 do not work on all  band:
 
I have the original AUX cable connected.
If I tap on the K3 or KPA500 the Band-tap the following happen:
 
K3                     KPA500
1.8                    1.8
3.5                    3.5
7.0                     7.0
10.1                    5.3
14                       1.8
18                       3.5
21                       7.0
24.9                    24.9
28                       28
50                      50
 
If I then send a single dit, then the corresponding band ist on the K3  and 
the KPA500
 
Cannot connect the KPA500 with the utility:
 
using the same PC and cable as for the K3 and cannot connect the KPA
 
May I got a defective front panel?
 
 


73 de Harry,  DK2GZ