I continue to be baffled by my K60XV problem. I have replaced R1 and C12. I continue to get a short (zero ohms) between pins 13 and 14 on U1. I thought I found a problem on the RF board: the coax shield may have shorted the lead from P1 lead 7 to ground...I insulated the coax shield exposed with tape. My thought was to recommend that shrink tubing be used over the exposed shield on this side of the coax...similar to that used on the other side of the coax to the RF board. However, I still get the short between pins 13 and 14 of U1 on the K60XV without plugging it into the K2.

Can this be explained by a defective Z1? Any other ideas? Let's face it, there aren't too many components on this small board! It's very frustrating.

John
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