magnetic strip malfunction
Technical term used for credit cards, transit cards, and other cards with magnetic stripes when the stripe cannot be read properly.
I couldn't use the card because of a magnetic strip malfunction.
This card needs to be reissued due to a magnetic strip malfunction.
Refers to the magnetic stripe itself, while 磁気不良 describes the malfunction of that stripe.
A general term for defect or malfunction; 磁気不良 specifies a magnetic-related defect.
Compound of 磁気 (magnetic) and 不良 (defect, malfunction).