Check the wiring of the speaker connector coming from the top cover...It plugs into P5 in the right front corner of the RF board...If the wires in this connector are reversed, the speaker will be shorted out when the cover is put in place and the screws are tightened down...
I once had a K2 in for upgrade and when the last screw in the top cover was inserted and tightened down, the speaker cut out...Backing it off a tad restored audio...The speaker connector was wired backwards...I have no idea why the fault did not show up sooner, but it is obvious that the cover screws do not always make good electrical contact...
Jerry, wa2dkg
>Recently I learned how important electrical contact
at these screw points is.
I had low speaker output and I thought the band
conditions were the reason. I noticed at some point that
in picking the K2 up from the left side, the volume
increased and the leftmost LED on the signal strength
meter disappeared. I removed the bottom panel and on
screwing it back with power applied, turning the screw
created electrical noise. I worked it back and forth
until the noise disappeared and now the K2 is much more
sensitive and louder.
With no other K2 to compare, I hadn't realised there
was a problem.<
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