I just wanted to say thank you for this thread. I bought the nightmare Blackberry from hell on EBay. It was SIM locked (thank you MML loader
) but I also found it had the no SIM error.
Under a microscope and with a meter I found the blue link was open circuit and a Google search found this thread.
Bridging the blue link fixed the phone 100%. I suspect the link is simply just that a link and not a fuse or a resistor as there are other examples on the board and they have no markings and zero resistance.
I would have thrown this phone back at the seller and made a PayPal claim but I already contested its non arrival and closed the case when it turned up seemingly working. I failed to check it with a SIM which was stupid and as I closed the claim that option is no longer available. Any bridging the blue link saved the day.