Crucia MX500 SSD burnt component on board

[bigbeark]

I dismantled this MX500 SSD to see why it wasn't detected. There's a 6-legged component that appears to be burnt. If I can figure out what it is and I can get a cheap replacement part I can try repairing it. Please have a look at the photos and feel free to make a suggestion. A replacement SSD is about $60 here so it's worth a try.

[прямо]

Looks like a buck DC converter, stepping down the 5V supply from the SATA power pins to whatever voltage the rest of the circuit needs.

I have looked at a bunch of Crucial MX500 PCB photos, and yours is the only one that has a different layout and components around that location.

Unless someone here has a Crucial MX500 with the same PCB...

However, it's not a lost cause. I'd map out the burnt IC pins connection.

First, to ground plane.
Second, to the 5V SATA power pins.
Third, to nearby components.
Also make sure none of the adjacent ceramic caps are shorted to ground.

Harder to explain in words but I think you get what I mean.

Once you figured out which pin of the burnt IC is connected to the 5V SATA power pins, and which pin is the output, get a bench supply that will allow you to generate 1V and be able to limit the current.

Solder a wire to that output pin and inject 1V, say at 50mA first.

Use a SATA to USB converter so you can remove from and hot plug to your PC convenienty.

If the disk isn't detected, raise the injected current gradually. If you reached 1A and nothing happens, then lower the current back to 50mA, but increase the injected voltage, then increase the current gradually again.
Repeat the process until the disk is detected and fully operational. Note down the voltage and current consumption.

At this point, you can simply use a good quality mini buck converter module to replace the functionality of the burnt IC.

That is IF I'm correct to assume the IC is a buck DC converter

Anyway, good luck. You can do it!

[dmill89]

That is the newer revision of the MX500 with a smaller PCB (as they switched to using denser flash chips). I have a 2TB version of that style MX500, but I believe they are essentially the same aside from mine having additional NAND chips on the back of the board. The only markings I could see on that chip are IBGQP but I couldn't find much info on that.

[прямо]

The SMD code is either BGQP, BG0P, B6QP or B60P. The preceding vertical line is not a letter I. Sometimes it's also a dot instead of a line.

But from your first photo, it seems that pin #2 is VOUT, and pin #5 is VIN connected to 5V SATA power, so most likely a buck DC converter or a fancy linear regulator with enable logic.

EDIT: looks like the SMD package is bigger than SOT-23-6, maybe TSOP-6?

You can help him a lot more than I could by confirming this using a multimeter when your SSD is running.

[jiroy]

Somehow late to this thread , but yes , it's B6QP . The source company is monolithic power systems (mps) , a company very famous indeed . The I at left is a symbol for lead and halogen free .
Well , those are the good news but the bad news is , this company has thousands of similar 6/5 pins products and each one has its own specific code with no any found catalogue from the company itself or any third party .
Anyway , will keep searching .

[stj]

isnt it under warranty?
MX500 has 5 years on it.
not like the BX crap