Repair Procedure (by Don, W3FPR)
I am going to tell you how to get the entire K2 disassembled
(well almost). It takes more to explain than to do it, so don't
Remove the KPA100 first - that is 6 screws. Two in the front
top just behind the front panel, one each on the sides - center
top, and then you will see that the rear panel is divided into 2
parts. Remove the two screws from the lower corners of the
upper part. The KPA100 should then be free to move upward -
grasp it from the back and pull up enough so the side clips
clear the side panels. If it gives too much resistance, loosen
the screws a bit on the left side panel. Then flip the KPA100
'on its back' to the right onto a book or box about half the
height of height of the K2. Remove the coax and DC cables from
their headers, remove the speaker from its header, and remove
the multicolored ribbon cable from the header on the Control
panel. The KPA100 can now be placed to the side.
Remove the 6 screws from the larger part of the bottom panel -
the part toward the front.
If the K2 contains the KAF2 or KDSP2, that option must be
removed next (skip if not installed) - behind the Control Panel
to the left side.
If it is the KDSP2, take anti-static measures and pull the upper
board toward the rear - put it in a place free of static.
For the KAF2 and the remaining part of the KDSP2, there is a
screw in the middle of the board, remove it and pull the board
toward the rear of the K2.
There are two screws (or 1 screw and a standoff) fastening the
Control Board to the Front Panel. Remove them. If you have
trouble finding them, peer between the control panel and the
front panel and you will find two standoffs - those screws
fasten into those standoffs.
Look down just behind the control panel on the left of center
and you will see a screwhead and a label next to it "LIFT HERE"
- use a long handled hex wrench (the one supplied for the knob
setscrews) - insert the short arm into the hole behind that
screwhead and move the long arm toward the rear to lift the
Control Panel out of its connectors. Place the Control Panel
Now remove the 4 screws holding the Front Panel assembly (2 top
and 2 bottom). The front panel can now be pulled straight to
the front away from the RF board.
That will expose the headphone jack both the top and bottom.
If you have any difficulty removing the soldering from the
headphone jack, crush the body with pliers or whatever tool
works and remove the pins one at a time, then clean up with
solder wick and install the new jack.
Reverse the disassembly instructions to get it back together.
When replacing the KPA100, tuck the ribbon cable and speaker
wire up into the area between the KPA100 front panel and the
heatsink and toward the top of the Control Board - it may be
easier to remove the right side panel to tuck those wires up