I could use some help on finding a replacement Transistor. One of the depth finders on our boat has failed and shows a dead short on the power input lines. The problem may be a shorted Transistor in the power supply section. I haven't removed it yet because i wasn't sure i could get a replacement. It has a Motorola logo on it and the numbers 734 and J31. It is a SOT23(?) surface mount package.
My Internet searches couldn't find the Mot part, but found a FMMT734. I'm not sure that is the correct match. Can anyone give me some information this component and where i might be able to purchase one?