[Elecraft] K2 - hang up problem

[N2TK]

Hi Gary,
Supply voltage is 13.0V as it has  been since I put together the K2. At 1W
out the voltage is at 13.0. At 100W out the voltage is 12.8V. The rig hangs
up at all power levels.

Serial #3481. It has been working fine for over 4 years.

N2TK, Tony


-----Original Message-----
From: Gary Hvizdak [mailto:garyhvizdak at cfl.rr.com] 
Sent: Friday, February 01, 2008 8:05 PM
To: elecraft at mailman.qth.net
Cc: tony.kaz at verizon.net
Subject: RE: [Elecraft] K2 - hang up problem

On Fri 1 Feb 2008 at 19:14:13 EST Tony Kazmakites (N2TK) wrote ...

Before I tear into the K2 to find  out what happened today I figured I would
ask on here in case someone has seen this  problem before.

It receives fine on all bands. When I transmit (does not matter what power
level or what band) it hangs up. If I keep it on the transmit mode power out
is fine. If I let it go back to the receive mode the receive signals are
very, very weak. If I talk into the mike, there is no power out and I have
side tone in the headset so I can listen to my transmit audio.
To correct this problem I need to change bands or shut off then on the
radio. 

Anyone hear of this problem before?

Tnx for any ideas before I pull out the schematics and take off the covers.

--

Tony,

   A couple of questions ...

1) What is your supply voltage? Under no load?  Under load?

2) What is your K2 life story, i.e. S/N, how long had it been operating just
fine before this problem surfaced?

73,
Gary  KI4GGX