Author Topic: Help Diagnose Samsung Odyssey+ VR HMD  (Read 123 times)

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Offline joystik

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  • Posts: 20
Help Diagnose Samsung Odyssey+ VR HMD
« on: March 09, 2020, 03:12:13 am »
Hi guys. Looking for your help again.

Tl;Dr: I screwed up and sent 12v on the usb power to the oddysey HMD. Now only recognized as usb 2.1 device instead of 3.0 or 3.1 like before.

I got this VR HMD from samsung on sale from amazon. However, I had problems and wasnt getting recognized as a monitor, only the usb 3.0+ device, so I searched everywhere and the most likely cause was insufficient power from USB ports. Bought a PCIe USB 3.0 dual port card with molex power connector for it, but the power connector came off when I applied a little force. So, I went ahead and soldered back on...but, backwards( :palm:).
To be honest, I felt really proud with the solder job, until I connected the hmd, and nothing happened, wasnt recognized at all. So, I disconnected it and connected a usb flash drive, which blew up immediately. I checked the card again and noticed the inverted connector and soldered it properly this time.
Checked with another flash drive, and worked ok. Tested all other ports and all of them were ok. The HMD, however, is recognized but only in USB 2.1 mode, not in 3.0 like before.

I disassembled the HMD and checked the PCB, which looks pretty intact. No notieceably burnt components or traces. I opened up the cable connector, which has a pcb and some components, but same here. No burn signs.
I have no experience troubleshooting USB issues. I suspect there must be an issue with the usb hub controller (GL3510), but I dont know how to test it.

If anyone could walk me through it, I would really appreciate it.

Attached are the pictures for the USB + HDMI (single) connector and both sides of the main pcb.


 

Offline joystik

  • Contributor
  • Posts: 20
Re: Help Diagnose Samsung Odyssey+ VR HMD
« Reply #1 on: March 12, 2020, 05:12:11 pm »
Ok, so I have looked all over google and have found the GL3510, but it is QFN64. However, the one on the board seems to be QFN48. What are the chances that the old chip may be compatible pin for pin with the newer GL3523, which does come in QFN48?
 


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