Dell precision 5560 Repair help ID component - Page 1
Forum section: electronics / repair

author: CoopedUp
author_rank: Regular Contributor
timestamp: March 07, 2025, 12:57:18 pm
content: I ordered this laptop that supposedly just had a bios password on it that was to be removed but upon plugging it in and powering it on it promptly booted I got into windows then I heard a pop and everything shut down. I have found some minimal signs of water corrosion but the big find is a blown component by what I can only assume is the Vram area. I think it's the power supply for the graphics card but I have no idea what the component is supposed to be.

author: CoopedUp
author_rank: Regular Contributor
timestamp: March 07, 2025, 01:05:28 pm
content: Having a hard time attaching pictures

author: CoopedUp
author_rank: Regular Contributor
timestamp: March 07, 2025, 01:06:10 pm
content: Zoomed out more

author: CoopedUp
author_rank: Regular Contributor
timestamp: March 07, 2025, 01:06:52 pm
content: The bigger picture ie the motherboard

author: CoopedUp
author_rank: Regular Contributor
timestamp: March 07, 2025, 01:23:01 pm
content: I have discovers a very similar motherboard schematic and am doing further research

author: CoopedUp
author_rank: Regular Contributor
timestamp: March 07, 2025, 01:31:07 pm
content: Okay so I have am pretty sure the parts are ferrite beads, 120 ohm. I am going to order a few of these to install as well as trying to get this chip which is a high freq voltage reg. unless you guys think that is not the problem. I do know I was fixing a laptop for a family friend which also has a similar issue. I think the new charger they got made the issue they were having worse and then the same charger killed my laptop ugh

author: El_Berto
author_rank: Newbie
timestamp: March 07, 2025, 03:00:46 pm
content: As luck would have it, I too have a 5560, North America spec if that matters, with the regular HD and non touch-screen if that matters. As long as I can send this message, it is in fine shape. where is some wood? I can't get a clear picture of the non-smoke-released part but will do it later today. Perhaps the etching will be clearer and may help.

author: fzabkar
author_rank: Super Contributor
timestamp: March 07, 2025, 04:23:02 pm
content: SY8286, Silergy, High Efficiency Fast Response, 6A, Synchronous Step Down Regulator, 4V- 23V in, 0.6~2.5V out, marking BAAxyz, QFN3×3-20:https://us1.silergy.com/download/downloadFile?id=3865&type=product&ftype=notehttp://skytech.ir/DownLoad/File/10367_Sy8286RAC.pdf

author: CoopedUp
author_rank: Regular Contributor
timestamp: March 07, 2025, 10:04:08 pm
content: Thankfully I was able to find the schematics for a similar computer but this matches up with the chip I found on the wrong boards schematics. I also found my short did not reside on the Chip but on a capacitor on the other side of the board... I removed it and the short is gone. I plan on replacing the ferrrite beads that were installed. I was wondering if just for a test if it would be terrible to place a 120 ohm resistor in its place as a test to see if that lets the computer boot? I imagine I need to rep[lace the capacitor also but IDK if I could test it without it.

author: CoopedUp
author_rank: Regular Contributor
timestamp: March 07, 2025, 10:14:38 pm
content: according to the schematic if I am correct there is 4 caps on the same line, 2200P .1u and 2 10 uf that are a larger 0603 package than the other 2. So I likely have a replacement and only need to worry about the ferrite beads