Thanks Mark,
I've replaced several of those relays over the years. I can do it in about
an hour now. But I'm fairly sure that 10 and 12 use the same set of
contacts so it's probably not a relay.
I had the PLL board whack out on me some years ago and I was able to fix
it by hitting all the solder joints. I'll try that on the osc board. The
problem comes and goes when it feels like it so I think it is a bad connection.
Seeya, Joe
In a message dated 6/25/2015 5:30:45 P.M. Eastern Daylight Time,
k8vf_mark@centurytel.net writes:
I sent mine in for an intermittent like that, only on 80 meters.
Probably on oscillator board, which is under top cover, left front, UNDER
the board shield.
You need to dress the cables and insulate with a towel so you can operate
rig while upper boards are folded off to the side.
Determine where the 10 meter section is, and push in that area. If that
doesn't work, heat with hair dryer to see if it comes back.
If you get results, then kill power and solder all connections in area of
fault.
If no results, I would still solder in 10 meter area, sucking away old
aged loooking solder. Also look for corroded solder joints. I just got my
Paragon II going with an intermittent on VCO board for all bands under 7 mHz
due to corroded joints
It can be a bad relay in passband relays, I believe, as the 10 and 12
meter bands use different relay contacts.(pretty sure)
That one is harder to get to.
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