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I love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro
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hey folks,
any idea where those pads are lead to? maybe the southbridge? hopefully not the apu. the fuses are ok. the shorted side is marked with an arrow.
thx...02-09-2024, 12:56 PM -
Hi all,
As the title suggests, how can I be sure that my EC chip is really dead?
I've recently gotten into this hobby of laptop repairs, and have successfully brought back to life a couple with some easy fixes, mostly shorted caps.
Now I'm working on HP Probook 455 G8, that had some "devil" run around on 3V line, burning a bunch of stuff. Luckily I have a dead 455G7 (for spare parts) so I managed to fix it (swapped burned parts) to a point that it will charge (both on barrel jack and usb-c), but it doesn't want to turn on. There is a 3V3 on a keyboard... -
Hello
I received a Dell E6540 today, everything works fine except the 2 right side USB JUSB3 & JUSB2 ,they are completely dead regardless what USB devide i tried.
There is no physical damage on them and look perfect, there is no 3.3v in D90 and D89 when i insert a USB device.
Any advice?
Donor MB available
Schematics and boardview attached.
Thank you in advance!!... -
Hey guys. I have this PSU with the secondary side completely dead and I need some help in troubleshooting and I couldn't find a schematic for it. I'm still a beginner in electronics so please bear with me.
There is no visible damage to any component, the PSU is reasonably clean with no burnt smeel whatsoever. The secondary side seems completely dead, I couldn't find any voltage anywhere, not even at the transformer's terminals. It seems as if the transformer is not doing its job, maybe because it's bad or because it's not told to switch on .
Here's what I checked... -
Attached schematic 🙂.
Laptop gives no signs of life. No fan and no CPU heat.
Think Engine BD4179MWV is hot on plugging in *AND* pressing the power button.
Discovered short to ground on VCC5M power delivery IC NB690GRP (5 volt line, not the high current VCC5M_PD) which is one of the ways that chip is powered. I'm puzzled.
Nothing else is warm on the board. CPU resistances are OK, 9V VSYS line is present from the BMIC. All misc and cables are disconnected.
What do you guys think happened? I've got two theories:
If the...I think ThinkEngine shorted first50.00%1I think 5V SMIC shorted first0%0I think something else happened50.00%1
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