crwdns2933423:0crwdne2933423:0

crwdns2933803:08crwdne2933803:0

crwdns2933797:0REWAcrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 REWA

crwdns2933769:0crwdne2933769:0
crwdns2933771:0crwdne2933771:0
crwdns2933801:0crwdne2933801:0

crwdns2933807:0crwdne2933807:0

+[* black] The faulty part is most likely hidden under the card reader. Then we check the back of the signal board with the Thermal Imager. The temperature on the top left corner of the card reader has gone up greatly. We can confirm that the faulty part is on the card reader area.
+[* black] Then we need to remove the card reader. Apply some Paste Flux to the bonding pad of the card reader. To protect the plastic part of the card reader, apply some low-temperature Solder Paste to neutralize the temperature of the bonding pad.

crwdns2933777:01crwdne2933777:0

crwdns2933779:0crwdne2933779:0

crwdns2915182:0crwdne2915182:0

crwdns2933777:02crwdne2933777:0

crwdns2933779:0crwdne2933779:0

crwdns2915182:0crwdne2915182:0

crwdns2933777:03crwdne2933777:0

crwdns2933779:0crwdne2933779:0

crwdns2915182:0crwdne2915182:0