[Elecraft] K60XV are you tired of this yet?
John Wiener
jawod at fuse.net
Sun Aug 20 12:05:08 EDT 2006
Don, if I spent the appropriate amount of time thanking you, I'd
never get anything else done. Nevertheless, THANKS.
Here's where I am with the K60XV. I find a short between pins 7 and
8 on P1. A 15X loupe shows NO solder bridge. Topside, the spacing
between P1 and Q1 is very close and at that point I can't completely
follow the trace.
But, the schematic shows the trace going to Q1 emitter and the board
shows the trace going past Q1 emitter and thru a "pass-thru" to pin 4
of U1. I read zero ohms throughout this trace (the 6VDC line).
On the bottom of the board, there is no trace for pin 8 (the 6VDC line).
I replaced R1 and C12 a while ago. Now, with both of those installed
(and U1 removed) I get OPEN reading between pins 13 and 14 of U1
socket. My thinking is that since C12 is in place, the short is
between C12 and P1.
Does this sound logical? That means that P1 is the likely culprit.
If so, I fear destroying the board while removing P1 (and also
destroying Q1).
If past experience is any guide, my thinking is probably way off the
mark. So it goes.
Have I said thanks yet?
John
AB8O
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