Hi iv got a 820-3115 and no hard drive is detected. If the drive is put into a usb caddy it works fine. I have tried a new cable to the drive, still the same problem. If I check the connector PP5V_SW_ODD is present at the connector. Im a bit lost on what to check next as iv not worked on one of these before.
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820-3115 No hard drive detect
- Thread starter crea2k
- Start date
If I plug the drive in and do a continuity test from the resistors back to the drive (half plugged in with copper showing) SATA_HDD_R2D_N and SATA_HDD_R2D_P I dont get a beep SATA_HDD_D2R_C_P and SATA_HDD_D2R_C_N I do. so im going to test from the pins on the connector now back to the drive and see if that works. Il know then if its the cable'(S) or vias at fault.
Tested the other cable and the two same lines dont beep / nothing on resistance test. Im presuming they are both supposed to go all the way from the connector to the drive ?. If so il run a jumper round the kinks, as iv not got time to be waiting for more dodgy cables to turn up.
Tested the other cable and the two same lines dont beep / nothing on resistance test. Im presuming they are both supposed to go all the way from the connector to the drive ?. If so il run a jumper round the kinks, as iv not got time to be waiting for more dodgy cables to turn up.
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Very interesting !. so iv just scraped the coating off the cable either side of the kinks and all cables beep fine apart from the two outer lines that are nearest to the screw hole. So I think we have found our common point of failure. those two lines are the two above data lines. So just going to run a jumper for the two lines and call it fixed.
Bingo !, that worked as expected. I just scraped down to the copper on the two traces nearest to the screw hole on each side of the kink in the cable. Ran a jumper for each of the two lines, circuit board masked it, job done !. Once its screwed down its on the bottom side so you cant even tell its been repaired now, works just fine. So the other cable that supposed to be new is being sent back as it has the same problem.
Iv only just stated doing them and its the first one iv seen with a flex cable, all the other 4 iv got here are ssd slots on the board. Il see if I can find any new ones that are actually new and just not advertised as such. Just fixing the bad traces seems to sort the problem though.