Fazee 10-04-2016
One issue to consider is that Singapore’s electricity voltage is 230V whereas the voltage for the U.S.A. is 120V, therefore I have no idea if this would affect the fuse values in the Sony in anyway?
In the case of an AC mains fuse the voltage difference will generally make a considerable difference in the current rating of the fuse that is necessary, because a given amount of power consumption by a component will correspond to almost twice as much current being drawn if it is configured for 120 volt operation than if it is configured for 230 volt operation.
However, the 3.15 amp rating of the fuses in Fazee’s 230 volt unit seems much higher than would normally be used in an AC mains application for a component such as the HAP-Z1ES, that is specified as consuming only 35 watts. That and the reference to there being two identical fuses leads me to suspect that those fuses are being used for much lower voltage DC applications in internal circuitry, such as the + and - 15 VDC voltages that are used in many designs. In which case the fuses that are required for the 120 VAC version of the HAP-Z1ES could very well be the same as for the 230 VAC version.
In any event, though, as Fazee suggested Butler should look inside his unit to be sure of what is necessary.
Regards,
-- Al
