No Cell Signal Anymore?

Is there a way to test the coax cables for the quick replacement?

unfortunately i work mostly trial and error at my shop, because we have everything in stock. you can test the continuity to make sure there is a full electrical connection between start to finish, but there i usually just swap em out and see if they work.

Checking continuity is done with a multimeter on the setting that looks like a diode symbol. it should beep if there is not a cold circuit. That being said, fraying and shorts can also cause issues picking up the circuit. this will not be caught by the continuity test.

Hey Scott thanks for the comment! So update I replaced the daughterboard and the coax cable and still have no service. BUT When I go outdoors I get pretty good signal. Very strange. It seems that the antenna or something has become weakened and not as strong? Any ideas on that?

if both these things are new in the phone, and we are assuming they are functional parts, and the signal is still having issues. then most likely you are having a motherboard failure. in all honesty, i rarely have worked on these devices for signal issues, so i would not be able to give you component layouts for this specific phone.

1) you could be having signal receiver failures.

-These are Little gold components with a black center. (Resembles the connectors of the coax, with minor varience) These components are surface mounted usually near the coax connectors. occasionally, reflowing the solder around these components can fix signal strength issues.

2) you could have a circuit component blown. (be it filters, capacitors, inductive coils, i could not tell you)

3) your broadband processor could also be failing. (This component prcesses the singnal you are receiving.)

All three of the above repairs, are dangerous to attempt without excessive practice, as the wrong amount of heat in the wrong spot for the wrong amount of time can cause irreparable failure.