[Elecraft] [K1] TX part sick

[Don Wilhelm]

Petr,

The number of turns on T4 is not likely to make much of a difference, 
but I recommend correcting it just the same.

However, it is an indicator that there may be other toroids in that K1 
with an extra turn on them, so check all of them.

As for the transmit problem, it is only a guess for what may be wrong - 
the best answer if "anything" in the TX chain.

The best way to approach that problem is to turn to the back of the 
manual and do the Transmit Signal Tracing to determine which stage is 
failing.

It sounds like that K1 may have experience a lightning event (the burned 
capacitors are an indicator of that), so you may have multiple failures. 
  Work them one at a time.  Correct each one in turn and re-test after 
each correction.

73,
Don W3FPR

On 4/15/2019 3:44 AM, Petr, OK1RP/M0SIS wrote:
> Hi all,
> 
> I am trying to repair the son's K1 where the TX seems to be sick. (receiver
> sounds hot and quite nice on both bands 40/20m)
> 
> I found several C0G caps around the cores on the module board burned as same
> as K1 relay so I replaced them all after long time searching them on the
> market (EU).
> 
> Now I am trying to check step by step according to manual the RF board (RF
> 2000 Rev.D) and I found that original builder (we did not built it) wound 5
> turns of secondary T3 (green wire) instead of 4 described in manual.
> 
> Should I remove the turn from T3 or is it possible to adjust the TX even
> with that mistake?
> I would like to avoid another burns...
>