[Elecraft] K2 Won't power on

[Don Wilhelm]

Jeremy,

One afterthought -- although Q7 and Q8 are the top suspects for your 
problem, after removing them, check the resistance from the Q7/Q8 
collector solder pads to ground.  If it is still low, the problem is 
something other than Q7 and Q8.

73,
Don W3FPR

-------------------------------------------

Jeremy,

OK, Q7 and Q8 are 'toast', you might as well remove them.

With Q7 and Q8 removed, do a TUNE and measure the DC voltage at the 
solder pads for the base of Q7 and Q8.  The expected voltage is 0.60 to 
0.64 volts.  If it is out of that range, replace Q11 and Q13 too.  Those 
transistors come included in the K2PAKIT.

73,
Don W3FPR

On 2/11/2014 8:47 PM, JeremyJones wrote:
> Q7 and Q8 both read 12.3 ohms from collector to ground.
>
> The symptoms definitely resemble blown finals, as I experienced the same
> thing when I was building the kit, including the over current tripping the
> resettable fuse.  I just didn't expect that from a receive only condition.
>
> Jeremy
> VA3ZTF
>