[Elecraft] 40 meter reciever not tuning

[Roland]

I can tell now that there is continuity from the speaker jack to the control
board.  I don't get continuity from P3 to P5 on the control board.  The
schematic makes it look like a clean shot.  When I tried to trace it on the
board point to point, I get lost.  Seems like it's going through a lot of
coponents.  If it is a straight shot, perhaps there is a break in the path
on the board.  Could I rig a separate jumper wire to P5 from P3?
Roland in Stockton
#3090
----- Original Message ----- 
From: "W3FPR - Don Wilhelm" <w3fpr at earthlink.net>
To: "Roland" <n5vwn at sbcglobal.net>; "elecraft" <elecraft at mailman.qth.net>
Sent: Monday, July 25, 2005 8:35 PM
Subject: RE: [Elecraft] 40 meter reciever not tuning


> Roland,
>
> I suggest you start by re-checking the VCO voltage readings as specified
on
> page 61 of the manual.  At the time they were done, you ahould have had
all
> voltages within range.  Ask yourself what has changed in the VCO area
since
> that time - the answer would normally be 'nothing'.  You may want to tell
us
> what the VCO Voltage readings actually are.
>
> For your speaker problem, if you know the speaker and external jack are
OK,
> the only thing left is the contacts in the headphone jack.  Make certain
the
> headphone jack is properly soldered at all pins - they are more difficult
> than most to solder since the pins do not project through the board.  It
is
> possible that you can have a bad headphone jack, but check the soldering
> first.
>
> 73,
> Don W3FPR
>
> > -----Original Message-----
> >
> > I was told to report back.  Ok,  I told you-all before that 40
> > meters wasn't tuning except on the display.  Well I thought all
> > the other bands were tuning.  Looks like 30 meters isn't tuning
> > around either.
> > I was told by Don to check left on R30.  I checked and while
> > tuning noticed that the voltage DID NOT vary.
> > I don't have a capacitor checker so I don't know about C71 other
> > than replacing it.  It has a little monolithic cap marked "820"
> > on it.  All I have around is a disk NPO "82" that I could swap it
> > out with, is this ok?
> > I put the rig on 7000 and the freq. probe to TP1 and then CAL
> > FACTR.  You said it should read 11915.  It reads 11341.  It DOES
> > NOT change when moving the dial.
> > On the speaker, No AC detected.  I also jumpered it directly to
> > the speaker just to check it out.  Nothing.  I jumpered the K2
> > speaker to my small wonders lab SW+ QRP rig and it works FB.
> > Thanks,
> > de Roland in Stockton
> > #3090 N5VWN
> >
> --
> No virus found in this outgoing message.
> Checked by AVG Anti-Virus.
> Version: 7.0.338 / Virus Database: 267.9.4/57 - Release Date: 7/22/2005
>
>