Trouble finding diode part number

[audiofreak19]

I am trying to replace a 2 diodes from a HDD that went bad. I cannot figure out the part number to replace them with. They are on the 5v line of the HDD board. Can anyone help me figure this out? I think the big one is a TVS diode.

[Diah]

Re: Trouble finding diode part number

the first one on left of photo wasn't Diode. the second one you mentioned on right side are ziner diode connected with Resistances which it never or 10000 to 1 get defect

[audiofreak19]

Re: Trouble finding diode part number

I know the zener diode was bad because on the other board I am replacing it on it was bubbled on the top. What is the one on the left? I was kinda wondering if it was a diode or not because it didn't have a cathode band on it.

[audiofreak19]

Re: Trouble finding diode part number

Also the smaller one on the left was bad on the actual board I’m replacing it on because there would be 5v on one side coming from the plug supplying power and on the other side of this component was only .8v.

[budm]

Re: Trouble finding diode part number

Is the device on the LEFT connected to the power pins? it looks like fuse.
The 4 devices all connected in parallel on the right: two MLCC, and two devices with band on top one may be Tantalum cap and another one may be diode for reverse polarity protection.

[audiofreak19]

Re: Trouble finding diode part number

The little one could very well be a fuse. On the left side of the component the trace goes right to the 5v pin which connects to the power supply for the HDD. I'm pretty sure the diode on the left is a TVs diode which is usually for circuit protection. That's why if you remove it the HDD will still boot up but just not have any circuit protection there. When they go bad they usually short.