[Elecraft] K2 troubleshooting

[Don Wilhelm]

John,

Yes, one side of C4 is grounded (see the schematic).  With 40 meters
selected, check the resistance to ground on both C4 leads - if you find
ground on both leads, look for the solder bridge.  If you have higher than
zero ohms on one lead, all is well.  Note that if you do not select 40
meters and power off before doing the resistance checks, you will certainly
find both leads grounded (through the relay contacts)

73,
Don W3FPR


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net]On Behalf Of John Wiener
> Sent: Wednesday, June 07, 2006 9:05 PM
> To: Elecraft email
> Subject: [Elecraft] K2 troubleshooting
>
>
> I SHOULD be embarrassed by my mistakes...but, I figure, I am learning
> more electronics in the last few months than I ever did in my early
> years.  So, I really don't mind sharing them with the group.  Hope
> the group doesn't mind.
>
> Here's the latest news:
>
> Yes, as noted before I found errors relating to confusing 560
> designation and 561 and 820 designation and 821.
> I found the "evil twins" tonight: C228 was a 561 (supposed to be
> 560)  and C210 was a 821 (supposed to be 820)
>
> So C4 is now correct (821) and C12 is correct (561)
> I will get the right caps for C228 and 210 and start alignment over.
>
> Now, as I was reviewing solder joints, etc., I noted that one of the
> solder pads for C4 was touching the outer can tab of L1.
> My question:
>
> Is this a solder bridge, or is there supposed to be a connection
> between C4 pad and outer (ground) tab of L1?
> I looked on N0SS's PCB pix and I cannot tell if a connection exists
> there or not.  (thanks, by the way, to Tom for the pix).
>
> John
> AB8WH
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