[1000mp] No Receiver 7.5 - 14.5 mhz

[Tom Homewood]

Thanks for all the suggestions. I am happy to report I am now receiving on
7.5 - 14.5 mhz, and transmitting on 20 and 30 meteres. When I checked the
voltage on TP 4003 in the range from 7.5 - 14.5 I got a constant 13 volts
(approximately) versus the 8.2 I was supposed to get at 14.5 and less below.
Changing TC 4002 had no effect.

I turned the Local Unit board over and there were two wire leads in the area
of TC 4002 that appeared to have marginal solder joints. These were not
surface mount parts but were wire leads coming through the board. I touched
these joints up and then measured the voltage on TP 4003 and it was close to
where it was supposed to be. I adjusted it a little higher and it is working
now. I hope I did a good enough job on the two leads resoldering, I hear a
little popping now and then, I may take one more critical look at those
joints.

Thanks to all that helped.

73, Tom, W1TO


----- Original Message -----
From: <esa.p.korhonen@nokia.com>
To: <1000mp@mailman.qth.net>
Sent: Monday, January 20, 2003 2:22 AM
Subject: RE: [1000mp] No Receiver 7.5 - 14.5 mhz


Hi....

This is an easy one. Simply resolder the coil leads on the VCO2 circuit and
it will spring back alive. This very same thing happened to a fellow ham of
mine just a few months ago. Look for other bad solder joints as well.

73 and GL

Esa OH7WV

-----Original Message-----
From: ext John Tait [mailto:bravo@iol.ie]
Sent: 19 January, 2003 19:30
To: 1000mp@mailman.qth.net
Subject: Re: [1000mp] No Receiver 7.5 - 14.5 mhz




Subject: [1000mp] No Receiver 7.5 - 14.5 mhz

Hi Tom..
               This one has come up before..

Sounds like your VCO 2 has stopped.. If you're lucky, it may
just need a " tweak"... If not, then a component has died..
Gimme a yell if I can be of help...
  BTW.. I've come across five other rigs with similar problems in the last
month..
                  73
                John EI7BA   http://www.iol.ie/~bravo/


> I have a problem that just started on my MP. I have no received signal
from
> 7.5 to 14.5 mhz on the main receiver. I can receive signals on the second
> receiver. I get zero power output if I try to transmit on 20 or 30 meters.
> If I try split operation I also get no transmitted signal.
>
> As I tune from just below 7.5 the rx goes from working to not working and
as
> I tune from just below 14.5 to above the receiver comes to life. I can
> always hear some background noise but no signal in the 7.5 - 14.5 range.
>
> Any one have a suggestion where to look first? I didn't see anything quite
> like this in the archives that I reveiwed.
>
> 73, Tom, W1TO
>