[Elecraft] High Curr

[Don Wilhelm]

Bill,

Hi Cur combined with low output is usually associated with a problem in the
Low Pass filter area.
Check carefully for properly tinned and soldered toroid leads, correct
number of turns on the toroids, and correct capacitor values.

You could actually have a problem anywhere between the PA transistor
collectors and the antenna jack.  Look at the schematic to locate the
components that may be suspect, and be certain they are all properly
soldered.  Continuity checks from one component to another are helpful
because everything in this area appears to be 'grounded' with your ohmmeter.
It is grounded for DC, but certainly not for RF (unless you have a solder
bridge somewhere.  If I had to guess, I would say that you will find your
problem to be either unsoldered/poorly soldered connections or a solder
bridge in the vicinity of the PA transistor output and through the Low Pass
Filter.

T4 is a part of the suspect components.  Be certain it is wound correctly
and that all leads go into the correct holes.

Check the bands other than 40 meters - if it is consistently a problem on
all bands, look for the problem somewhere other than the Low Pass filter,
but if it is OK on one band but not others, the Low Pass Filter will be
found to be the source of the problem.

73,
Don W3FPR


> -----Original Message-----
>
> I just tried Part III 40m alignment.  When I tried TUNE I got a
> message that
> said HIGH CURR,  very tiny output and the current went 1.5 amps on lowest
> setting.  The finals heated up pretty quickly also.  Can someone
> point me in
> the right direction?
>
>