[R-390] Check.... your newly acquired R-390A

[Bob Camp]

Hi

One thought: 

Have you checked to make sure the diode load, RF gain, and AGC jumpers are all in place on the back panel?

Another good thing to check is the setting of the IF gain pot. 

If you get past the IF strip (455 KHz into it gives you a signal) then you need to dig a bit into the Y2K manual. 
Take a careful look at how the 390A does it’s playing with IF frequencies. The IF approach changes as you 
switch to higher bands. The first crystal oscillator at 17 MHz does not operate on all bands. If the VFO or
the second crystal oscillator are dead then, yes, you loose everything.

Bob





> On Apr 24, 2016, at 12:48 PM, ALLEN MARTIN <w7apm at mtaonline.net> wrote:
> 
> As I said in my original post I have good audio out and can change filter widths. The BFO works or at least seems to as I can hear the tonal change. I will try your suggestion. Tuning to 00.000 doesn't do anything. I do have lots of indication on the carrier level meter where ever I tune. but no signals. As the rf gain works well perhaps the first mixer or the 17 MHZ oscillator isn't working. I will check those out and see what I find.
> 
> Tnx!
> Marty 
> 
> ----- Original Message -----
> From: "Pete Williams" <jupete at internode.on.net>
> To: "r-390" <r-390 at mailman.qth.net>
> Sent: Sunday, April 24, 2016 4:30:14 AM
> Subject: [R-390] Check.... your newly acquired R-390A
> 
>   G;day  list...
> So your  latest R-390A  doesn't   utter a  sound  at turn on ?....I'm
> indebted  to  an old  email  from way back 2007 and  a  long time user.
>  Check   with this initially..
> Dial receiver to 00.000. You  should  peg the  Carrier Meter. Flip the  BFO
> on to see if you hear a tone .
> This  checks  everything back  from the  headphones  to the  First  IF
> Mixer ( you are receiving the
> 17MHz  LO) , If you have the meter pegged, then everything  from  V202  on
> is  working-  at least to  some  extent.   That leaves V201 stage  and the
> antenna relay.
> At least it is a place to  start   to  do  additional  troubleshooting.
> Cheers
> Pete  VK3IZ
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