The nearest circuit to the fuse was the start circuit that consisted of pair of NPN and PNP digital transistor (4k7 +4k7 resistor built into the transistor). It is just 50MB and so it can be expanded to 8GB more than help of Micro SD memory card. http://Ip.Vialek.ru/question/samsung-s5600-samsungs-answer-towards-the-lg-cookie-phone/