crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2918746:0crwdne2918746:0

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crwdns2933797:0Robert Wilcoxcrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Adam O'Camb

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crwdns2933807:0crwdne2933807:0

[title] Solder new socket
-[* black] When new SIM-socket arrives, optionally add solder to the pins first. I had a socket that did not solder well due to oxidization. Especially the eight small signal pins must have good connection.
-[* red] The Socket has eight signal pins at the card-inserting side, several pads for shield and two pads at the rear side for SIM-inserted detection.
-[* green] Place socket on the board and solder at one shield edge first to make a stable position.
-[* black] Now solder the eight signal pins at PCB edge. Use steady hand or something to steady your hand. If you bridge some pins DO NOT PANIC, use solder wick to remove additional solder.
-[* black] Use magnifying glass or microscope if necessary. I used both because the contact area of the signal pads is tiny and even if it looks ok, it might not have contact to the PCB.
-[* black] Before soldering all shield pads, check if system is working ! I had to re-solder the socket three times because of corroded pins.
-[* black] One can test the device OPEN (but with PCB and battery in place) to see if 3G works. Beware that WiFi is bad because no antenna (Antenna is on back cover)
+[* black] You can optionally add solder to the pins before installing the new SIM socket. The 8 small signal pins must have an especially good connection.
+[* red] The socket will have 8 signal pins on the card-inserting side, several pads for shielding, and two pads at the rear for inserted SIM detection. (Red circle in all images indicates the location)
+[* green] Place the new socket on the board and solder at one shield edge first to make the socket more stable.
+[* black] Solder the eight signal pins at PCB board edge. Try to be as steady as you can when soldering. If you happen to bridge some pins, do not panic. Use a solder wick to remove additional solder.
+[* black] Use a magnifying glass or microscope if necessary. The contact area of the signal pads is tiny, so even if they look like they are touching the PCB board, they might not actually be touching.
+[* icon_caution] Before soldering all shield pads, check if system is working! Otherwise you might have to re-solder the socket again.
+[* black] You can test the device while it is open, but the PCB board and the battery have to be in place. You will be able to see if 3G works but WIFI will be bad because the antenna is on the back cover which will be removed at the time.