Soldering U.FL ( UFL Coax RF) connector. No Signal Problem
Hi, I bought a used phone from a guy claiming that the network simply "stopped" one day. I thought it would be a software/firmware issue as a result. But after doing the usual googling, verifying imei, updating firmware etc etc I eventually opened her up to find this:
So the guy is telling a few porkies and wasted my time. The usual eBay buggery going on here. My question to you nerds is how to go about fixing it. Since the U.FL port is only for test purposes, could I just solder a wire accross?
I'm guessing the trace coming from the RF attenna coax flex cable is the one I need to solder to the other side. The negative pads look like they're ground. So I just need to keep them insulated right?
Thanks in advance. Lets save this motherboard from the landfill. Peace
Is this a good question?
Hi, Don't know too much about it but did the phone have an antenna connected? In this link at Step 7 the antenna seems to be connected to the connector that you still have. Samsung Galaxy Note 3 Motherboard Replacement and I'm wondering if the missing connector is just a test point (as you say) but doesn't go anywhere else.
by jayeff
The antenna flex cable was connected. The second photo shows how it should be arranged, just like in step 7. I believe it is just to test the antenna's efficiency at transmitting an RF signal or something like that. Unlike a U.FL connector present on the board, the missing one shouldn't have a single positive terminal, it should have two (so the single passes through). It makes sense if there's no signal at the moment because it's completely missing.
by Frank Reif