[Elecraft] Yamaha CM500 bias box problem

[k.igor at comcast.net]

The black box besides the battery holder and connectors has just one resistor. If I remember correctly, you should be able to open the box and check. I had to open mine because of failed solder connection. The wire used for "pig tail" connector is pretty weak, it brakes easily. Check the wire and the battery holder connections. 



73, 

Igor, N1YX 



----- Original Message -----


From: "Jorge Diez - CX6VM" <cx6vm.jorge at gmail.com> 
To: "Elecraft Reflector" <elecraft at mailman.qth.net> 
Sent: Monday, October 31, 2011 1:25:13 PM 
Subject: [Elecraft] Yamaha CM500 bias box problem 

Hello, 

it´s possible that the small black bias box of the Yamaha CM500 was damaged 
if I use bias in the K3? 

I was using DXDoubler for SO2R last weekend. CM500 connected to DXDoubler so 
I needed to use the black bias box. 

Since I couldn´t record M1-M4 messages in the K3 from the CM500 connected to 
the DXDoubler, I connected directly CM500 (without black bias box) in the 
back of the K3 and turn ON bias and record the messages. 

Then I connected CM500 with bias box on the DXDoubler, but I forgot to turn 
OFF bias in the K3 menu. 

And I noticed that it stop working. I tested again the CM500 on the K3 and 
work properly, so the problem is in the small bias box. 

No signs of damage, but I cannot open it to see inside. 

Any idea how to repair it or to buy another one? 

73, 
Jorge 
CX6VM/CW5W 



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