[Elecraft] K3 RS232 no data out

[Pete Smith]

I wonder if there is anything that can be done (on the board, for 
example, or in an outboard box) to decrease the vulnerability of U1 
(written as I await my replacement KIO3A board).

73, Pete N4ZR

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On 6/8/2010 12:47 PM, Dr. Werner Furlan wrote:
> Dr. Werner Furlan schrieb am 7 Jun 2010 um 23:57:
>
>    
>> My K3 stopped sending data out of its serial port. I can set a frequency
>> (using a terminal program) but get no response from the serial port. K3
>> Utility is of course not working because there is no reply to the ;
>> command. My guess is a problem with U1 on the KIO3 board.
>>      
> thanks to Gary Surrency from Elecraft Support, Van W1WCG and Phil WD8QWR
> for their help in diagnosing the problem. It is a partially defective U1
> on the KIO3 board. I'll have to replace it.
>
> 73! de Werner OE9FWV
>
>