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#1 |
Senior Member
Join Date: Jun 2015
City & State: turin
My Country: italy
I'm a: Knowledge Seeker
Posts: 129
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![]() Hey
On this mobo with no power to USB or PS2 Port. what would you suggest? Thank fabbrone |
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#2 |
Senior Member
Join Date: Apr 2021
City & State: Parcela/Mazowieckie
My Country: Poland
I'm a: Hobbyist Tech
Posts: 159
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![]() Check any Bios setting for swithed off ports, check 5V regulator supplying the USB/PS2 (usually an analogue one) and if the supply voltage for it is presesent (probably 12V). Check for short after the 5V regulator. Check any recovering fuses or any 0 ohms serial resistors in the 5V power lane for discontinuity if present. Check any switching mosfets between the regulator and USB. Check ESD surge protectors on USB data lines for shorts (very small 6 pin dual in-line devices near the USB Ports), they go short on a surge to protect the chipset and must be replaced (they are usually devices like IP4220CZ6, case type: SO6 (SOT457)).
Last edited by DynaxSC; 01-25-2022 at 06:52 AM.. |
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