RFI-EMI-GUY
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Call uniden and order a replacement. It looks like the cable just snaps into the PCB no soldering required.
BCD436HP/BCD536HP: Used BCD536HP Receive Problem
- Thread starter rangers38
- Start date
$90 plus shipping to return it to you. That was the price last year year when I sent them my 436. Mine was under warranty but I was told that that included parts and labor for out of warranty repair.
Maybe he had the ‘original’ telescoping antenna on it, and forgot that to remove a BNC connection, you gave it a gentle push in and then turning the outer sleeve. So maybe tried to remove it by “unscrewing” it, and when it did not unscrew, he clamped down with a pair of pliers trying to twist it off, with the excess force breaking of the pins on the antenna connection on the scanner.
Ubbe
Member
My guess are that the original owner used another type of antenna connector that needed the studs of the scanners BNC connector to be removed, maybe a TNC connector. Uniden might have the micro MCX connector with coax and BNC as a replacement. It might have damaged the center pin connection so look straight into the BNC conenctor and take a picture as well.
Tune the scanner to your local FM broadcast station, Channel+Frequency+Channel and do the suggested test to pull the coax from the circuit board and touch a wire or paperclip to the MCX connectors middle pin with squelch open to hear the noise and it should be some sort of reception. In Sentinel do "Clear User Data" on the SD card to restore all settings to default.
forums.radioreference.com
/Ubbe
Tune the scanner to your local FM broadcast station, Channel+Frequency+Channel and do the suggested test to pull the coax from the circuit board and touch a wire or paperclip to the MCX connectors middle pin with squelch open to hear the noise and it should be some sort of reception. In Sentinel do "Clear User Data" on the SD card to restore all settings to default.
Replacing BCD536HP antenna connector
Back in 10/2015 I discovered the BNC antenna connector was intermittent. This was caused by me when I first hooked up the scanner I hooked up the antenna feed line, Belden 9913, directly to the scanner. Also contributing to the problem is that every time there are any thunderstorms forecast I...
/Ubbe
rangers38
Member
You mean the center pin of the connector that is soldered to the circuit board? If I do that with a paper clip on a local channel will it show reception bars in the display?My guess are that the original owner used another type of antenna connector that needed the studs of the scanners BNC connector to be removed, maybe a TNC connector. Uniden might have the micro MCX connector with coax and BNC as a replacement. It might have damaged the center pin connection so look straight into the BNC conenctor and take a picture as well.
Tune the scanner to your local FM broadcast station, Channel+Frequency+Channel and do the suggested test to pull the coax from the circuit board and touch a wire or paperclip to the MCX connectors middle pin with squelch open to hear the noise and it should be some sort of reception. In Sentinel do "Clear User Data" on the SD card to restore all settings to default.
Replacing BCD536HP antenna connector
Back in 10/2015 I discovered the BNC antenna connector was intermittent. This was caused by me when I first hooked up the scanner I hooked up the antenna feed line, Belden 9913, directly to the scanner. Also contributing to the problem is that every time there are any thunderstorms forecast I...
/Ubbe
tvengr
Well Known Member
Yes, that is correct. If you see signal bars, the receiver is working and the problem is with the BNC connector assembly.
rangers38
Member
Attachments
rangers38
Member
Tested the antenna connection bnc to connector to board. Center conductor OK and ground OK. nothing seems comprimised
tvengr
Well Known Member
Why are you showing the back of the scanner. You unplug the antenna connection inside the scanner and touch the clip to the center of the connector soldered on the circuit board inside the scanner.
rangers38
Member
Because a previous member asked for a pic of the BNC on the back of the unit. I unplugged the cable and tried center conductor with a paper clip on local channel that was active on my other scanner. Nothing received
tvengr
Well Known Member
Did you check for a short between the center conductor and ground?
rangers38
Member
1000 ohms center to ground when the rear BNC when it is connected to the main board. When I had the connector off the board there was no continuity between center & ground
Bob1955
Member
rangers38--That's their FLAT RATE, regardless of what needs to be done.
It seems to that there's some internal damage besides the BNC connector being damaged as it took a hard hit to get like that.
I believe it has to be shipped to Irving, Texas and I'm not sure of the turn-around time. Other members might be familiar of the time frame on repairs.
Have a good Fall.
rangers38
Member
I am unsure if the unit got damaged from being dropped. Some commentors on here thought that may have caused the antenna bnc issue, but I don't know. I am unsure if it's antenna related as well, other than the studs missing on the BNC
Bob1955
Member
rangers38: You cannot use it with the studs missing as the antenna won't be secured tightly. So, your only choice is to send it into Uniden and pay $90 and they will replace whatever it needs.
Ubbe
Member
That checks out to be fine. As most of the front end components are covered in epoxy it needs to go to Uniden and they will swap out the whole board as it probably costs them $50 and spending time on it to do fault tracing costs a lot more.
/Ubbe
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