[TenTec] Paragon Problem Solving Info Needed

[M. P. Haynes]

Hi Bob,

With troubleshooting skills like that you ought to get a job in
electronics.  HI HI !

Pat, K4BEH
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On Thu, 04 Aug 2005 08:06:42 -0500 Robert & Linda McGraw K4TAX
<RMcGraw at Blomand.Net> writes:
> Problem solved.  Bad 1N914 diode on the Logic board not allowing ROM 
> access 
> for the transition from TX to RX.
> 
> 73
> Bob, K4TAX
> 
> 
> ----- Original Message ----- 
> From: "Robert & Linda McGraw K4TAX" <RMcGraw at Blomand.Net>
> To: "Tentec" <tentec at contesting.com>
> Sent: Saturday, July 30, 2005 6:43 AM
> Subject: [TenTec] Paragon Problem Solving Info Needed
> 
> 
> > With all the good technical folks here on the list I take the 
> opportunity 
> > to get advice on resolving a problem with my old Paragon.
> >
> > Symptoms are:
> > Receive on all bands and all modes is confirmed as OK.
> > Press tune and it appears to switch modes, receiver mutes but 
> after about 
> > 3 secs, S-meter appears to indicate signals from the input.  And 
> there is 
> > no RF output while in tune regardless of the RF Power setting.  
> Pressing 
> > tune again does not return the unit to receive.  However, pressing 
> LSB or 
> > USB does switch back to receive or changing the tuning knob will 
> cause it 
> > to revert back to receive.   In transmit, via either PTT or VOX, 
> there is 
> > no output when audio applied to the mike input however the unit 
> does 
> > appear to switch into transmit, stays muted, but again after about 
> 3 secs 
> > the S-meter indicates signals.  Again, releasing the PTT does not 
> return 
> > the unit to receive but pressing  the LSB or USB (and maybe other 
> buttons) 
> > will revert the unit to receive.
> >
> > This unit has been sitting on the shelf for some time and has 
> worked 
> > flawlessly on a regular basis.  Power supply is 13.8V and stable.
> >
> > Looks like something perhaps on the logic/processor board has gone 
> west. 
> > I haven't poked around inside thus thought I'd asked in the event 
> someone 
> > else has experienced the same or like problem.  Any suggestions 
> will be 
> > appreciated.
> >
> > Thanks in advance.   Respond to the list or privately.  Either 
> works for 
> > me.
> >
> > 73
> > Bob, K4TAX
> > _______________________________________________
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> > TenTec at contesting.com
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> > 
> 
> 
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