[Elecraft] KRC-2 Possible Lightning Failure

[bwruble at gmail.com]

Tnx. I will order a new one!  



Brian F. Wruble, C.F.A.
From my iPad


> On Jun 20, 2014, at 1:48 PM, Don Wilhelm <w3fpr at embarqmail.com> wrote:
> 
> Brian,
> 
> The best way to attack a KRC2 that has been subjected to a strong lightning surge is to replace all the ICs (and possibly other active devices).  If you have a good desoldering tool it is not a difficult task to remove the ICs.  Lacking that, assume the ICs are bad and clip the leads from the IC bodies and remove the pins one at a time.
> 
> Wholesale replacement takes less time than trying to troubleshoot what could be multiple failure, and is not really that expensive.
> 
> 73,
> Don W3FPR
> 
>> On 6/20/2014 1:19 PM, Brian F. Wruble wrote:
>> Hi all:
>> 
>> I have had my K-Line (K3, KPA500, KAT500, P3) all working brilliantly, both
>> local and remote using my new K3/0 Mini.
>> 
>> While I was away, a severe electrical storm passed through the QTH in
>> Maryland.  I returned, moved cables around to get local operations geared
>> up.  The KRC-2 band decoder seems to have failed.
>> 
>> I have 5 volts after the voltage regulator, U3, but I cannot get 12V at any
>> of the "high side" driver outputs on J6, J7, J8 and J9.
>> 
>> The unit communicates with the configuration program, and I have firmware
>> version 1.6.  I have re-loaded the firmware.
>> 
>> What should I try next?
>> 
>> Tnx es 73 de Brian W3BW
>> 
>> *Brian F. Wruble, C.F.A.
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>