[Elecraft] Shack equipment noise

[Keith Heimbold]

Hi Mark,

There is nothing physical like burn or open visible to the eye.I will probably try connecting it to an external power supply and see if that fixes the issue. 

Whatever happened it was loud. I wonder if the Y connectors are flawed because I was also going to hook up my LP Panadapter later that I just received. 

This is freaking me out a little. I love that rig.

Thanks,

Keith
AG6AZ

Sent from my iPhone please excuse typos

On Dec 10, 2011, at 2:17 PM, "Mark Bayern" <plcmark at gmail.com> wrote:

> You could open it up and see if any 'spare' parts fall out, or if any
> of the components on the board look like they have let out their magic
> smoke. Missing/blackened traces on the PC board would also be a
> telltale sign.
> 
> (I am assuming that any failure that actually created a loud noise
> ought to be visible.)
> 
> Mark  AD5SS
> 
> 
> 
> On Sat, Dec 10, 2011 at 3:25 PM, Keith Heimbold <ag6az at hotmail.com> wrote:
>> Wayne-
>> 
>> I am a bit embarrassed about something that just happened in my shack because i think i just blew up my external 6m preamp.
>> 
>> I was putting in line my six meter preamp and using a db15 Y connector with my Yaesu Quadra amp on the other connector. I was not transmitting and just getting it connected and then I heard a super loud pop.
>> 
>> I disconnected eveything and then tested the transceiver and the amp.  The K3 is fine but the amp was locked. I turned off the amp and restarted it and and it was fine.  I reconnected the preamp and put the antenna in direct line with the K3 disconnecting it from the amp. The preamp when energizes reduces the signal strength. I think the pop came from the preamp. It is hard for me to isolate the noise source because I had my headset on. For sure it was working for about 20 seconds and then the pop occurred. It scared my dogs and myself it was so loud.
>> 
>> I am not sure how I can test the preamp to see if it indeed blown. Any thoughts would be appreciated.
>> 
>> Thanks,
>> 
>> Keith
>> AG6AZ
>>