[Elecraft] BFO test failure (K2), Part 2 of RF board test

[Marshall Jose]

Chuck,

- Perhaps the BFO is working but the signal isn't getting past the 
buffer Q24. When the K2 is in CAL FCTR mode, there should be something 
close to 8V at "V ALC". If it's low or 0V, you won't see any frequency 
reading.

- If D36 is backwards, that'll shut down Q24. Check D37 & D38 too.

- I like the K2 a lot, but I like L33 the least. Get out the magnifying 
glass and the strong lamp and scrutinize L33 for scuffs, dings, etc., 
i.e., anything which might cause a short or an open. Do you get a FCTR 
reading if the bottom cover is off?

That's all I can think of off the top.

Marshall

Chuck wrote:

> My BFO does is not working. The freq. counter reads 0000.0.
> I have tried following other posts on the subject and checked the
> voltages on U11 and verified that R98 and R99 are present, L33 is
> installed correctly.
>  Are their any voltage checks I can run on Q24, or L33.
> Is there something else I can check? The troubleshooting guiding in the
> manual is based on info messages, which I am not getting any.
>
> I just completed the VCO voltage checks and that ran good. Everything
> was within range spec'd by the manual.
>
> Thanks, Chuck - K3TNT
> <http://www.elecraft.com>
>