Toshiba PCB fuse

[Nick_CT]

Hi all,

Could someone please assist with highlighting fuse/s on this PCB that can be tested before swapping over PCB and ROM, original PCB seems dead.

Thanks

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[Amarbir[CDR-Labs]]

Hi all,

Could someone please assist with highlighting fuse/s on this PCB that can be tested before swapping over PCB and ROM, original PCB seems dead.

Thanks

Nick .
Have you tested that resistor above the two horizontal resistances you have in this pcb .I seem to sense its burned .Might be it has not but increased the resistance

[fzabkar]

Have you tested that resistor above the two horizontal resistances you have in this pcb .I seem to sense its burned :mrgreen: .Might be it has not but increased the resistance

That appears to be a fuse, not a resistor, probably 2A or 4A. If so, then its resistance would be either 0 ohms, or it may have increased to infinity.

@Nick_CT, as a general rule, the very first place to look for a fuse would be the +5V input. That's pins 7, 8, and 9 of the SATA power connector.

I would also check for a short circuit between the load side of each zero-ohm resistor and ground. Then measure the resistance between each coil and ground. The coils are the landmarks for the onboard supplies.

[Nick_CT]

Thanks, will investigate.