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I have a PS4 that water went under the power supply and made a buzz, a crack and never turned on again. Couldn’t have touched the main board but the fuse on the power supply is blown. If I clean the power supply and replace the fuse, would it fix the power supply or will I need to buy a new one, I really don’t want to have to buy a new one since I have a fuse. Its an F5A250V but it says on the old one T5A250V. are they the same?
Hi @badatrepair , No the fuses aren’t the same. You need to use a T5A 250V fuse. An F5A 250V is a fast acting fuse (F = fast) and a T5A 250V is a slow blow fuse (T = timed). Even though they have the same rating a slow blow fuse will hold when the AC power is first connected to the power supply, whereas a fast acting fuse will blow straight away due to the initial high inrush current that flows. These currents are there for <10mS (milli seconds) but are high enough to blow a fast acting fuse. The high inrush currents are due to capacitors in the power supply, charging up. You will find that a lot of devices use slow blow fuses for this reason, e.g. TVs, stereo audio receiver amps, dvd players, game consoles etc You will need to clean the power supply with Isopropyl Alcohol 99%+ (available from electronics parts stores) to clean away all traces of water and any corrosion from the board and any plug in cable connections etc before attempting to use it again. If possible do not use “rubbing alcohol” as this is mostly <70% IPA, can contain additives which may leave conductive residues and is not as effective. Be safety aware as some of the capacitors in the power supply may still be charged so perhaps you could try to discharge them by disconnecting the power to the power supply and then pressing and holding the power button on the console for about 30 seconds and then release. What this does is that the console will attempt to start but of course it can’t because there is no power but it will drain any charge from the capacitors in the power supply
