I let is sit while I was sleeping. Started it up, unplugged, and it lasted about 5 minutes. At least I have something to tell the repair people.
SDS100/SDS200: SDS100 Scans but no reception
- Thread starter rgchristy
- Start date
Thanks Joe! Nice to see you back in action. Hope you stay on the mend.
Being sick, surgeries, and the like are no picnic. I've had twenty cancer surgeries and ten+ others. I have more stitches than Frankenstein. The one good thing about surgeries, is that after you heal, they wind up in the rear view mirror. Or as my Grandmom used to say "You'll live, you just won't look the same".
I'll call Uniden repair soon to get it set up.
I do have a questions though. Is this something that I'm going to have to deal with every other year, or are there multiple points of failure?
It looks like the general consensus is that it's a thermal/cold solder joint intermittent failure. It threw me because of my previous experience in being able to wiggle the antenna/connector to get the reception back.
It was a good lesson in troubleshooting.
Thanks for everyone's help.
It was a good lesson in troubleshooting.
Thanks for everyone's help.
tvengr
Well Known Member
Did you try a different antenna? A temperature change will also transfer into the antenna which could have a bad connection itself and fail due to expansion and contraction. Make sure that the center pin on the antenna's connector is not broken off or pushed in.
Yes. Tried a few different antennas and adapters. Also checked the scanner's SMA connector. No damage and no change.
tvengr
Well Known Member
If wiggling the antenna causes it to cut in and out, you probably have a broken connection between the antenna connector and the circuit board inside the scanner.
That was the situation in 2022, the last time that this happened. This time, there's nothing like that. It just won't receive after warming up. It looks like it's working, but there are no RSSI readings and no reception, even on NOAA. This morning, after sitting unplugged overnight, it ran for about five minutes before the reception stopped. Yesterday, it worked for about an hour. I think that Joe Bearcat nailed it.
Looks like after it heats up to it's normal operating temp, a bad solder joint is breaking connection possibly...
Could be the ant connection...
Could be the ant connection...
If you have any trunked systems loaded that you can stop and HOLD on, the control channel transmits continuously....
Then try flexing the ant around and see if you see any signal activity...
Then try flexing the ant around and see if you see any signal activity...
Last edited:
tvengr
Well Known Member
Sounds like typical behavior of a bad solder connection with temperature change. Since you are getting RF noise and no signal indication, there is a good chance that the receiver is working but the signal on the antenna is not getting to the receiver. With squelch set on 2, does it show scanning but not stopping on anything?
At the TV station where I worked, we always said, "Murphy was an optimist!"
With the squelch at 0, I get audio, but no RSSI or reception. With the squelch at 2, it just keeps scanning away with no RSSI or reception.
Nothing, unless it's been sitting overnight cold. Then it lasts for about 5 minutes. Yesterday, it was over an hour. Time to go back to Uniden I'm afraid.
May not be a CSJ on the Ant connector then... Something else internal maybe...
Just a small update. While waiting to send the unit back to Uniden for repair, the battery has expanded and will also need to be replaced. The battery was inside the radio and not charged during this period.
Yes, I would have liked to send it back to Uniden right away, but have been unable to due to personal reasons. Now, I have another expense along with the radio repair.
I wish that things were made to last longer.
Yes, I would have liked to send it back to Uniden right away, but have been unable to due to personal reasons. Now, I have another expense along with the radio repair.
I wish that things were made to last longer.
