It sounds like a bear, Jason. But I know you'll
find it eventually, especially with input from Don
W. and Co.
I still think the SSB board is the likely culprit.
But did you do any other mods at that time, like
the A to B mod set? Good to look in those areas
too, if you did. I've done *most* of those
updates, but generally not the post-2002 KPA100
mods and updates: I've had zero issues with mine,
perhaps because the KAT100 gives it a happy
environment. The one recent mod I really
appreciated was the AF gain pot mod. No
components, but traces to cut and jumpers to add
on the three main boards -- a major disassembly.
But well worth doing (likely done on yours, since
I think the mod has been around since 2001); easy
to check for by looking for the long jumper on the
RF board at the front on the underside.
K2 is a great rig. I did a receive compare with my
K3 this morning and it's still one of the best
there is. It is nice, with the new rigs, to not
have the need for disassembly for firmware
updates. Of course, not likely any more for the
K2! Mine was ten years behind in Feb so I did all
the needed F/W updates then.
73, Phil w7ox
On 3/19/14, 11:12 AM, Jason V wrote:
Thanks Phil.
My wife is IPC-7711/7721 and had her inspect my work when it was complete,
so pretty confident there. That and I rechecked it several times since the
problem began. Removed the old crystals, cleaned up the vias with
solderwick, re-installed using insulator pads, and soldered the ground tab
to the side of the crystal approce 1/8" above the base. All the cans
measured for continuity to the ground plane. Have a metcal soldering
station and it makes working in dense layouts easier, not to mention temp
controls. No one is perfect though so I could pull the KSB2 and put a few
jumpers in it's place. The problem will either follow it or stay.
No. Wish I had stopped to check the K2 mods first. Usually I take an
incremental approach to this kind of thing but since I had the radio all
apart I did them while I was in there. So I don't know exactly when the
problem was introduced.
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