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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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I was watching a youtube video when I realized that my ac/dc adapter was unplugged from the wall and grounding unit. I plugged it back in and my laptopl froze then made a loud buzzing sound. I imeditaly turned it off and on, there were 0 probelms. Then, when I made sure that my power cord was working, I plugged it in and nothing. When I remove it, the screen flashes black for about 1/5 of a second this is only external. I don't know if my adapter has been fried or the power component in my laptop has been. I am rushing this post because I only have 17% left on my latptop and this is the only device I have. I am backing up everything and I also ran power diagnostics. Please, if you have any information on how to check if one is broken or the other, respond immeditally. Sorry for the bad post, but time is limited. Tomorrow, I am going to try and build a charger (usb) for it with some extremely low output batteries and capacitors 130maH in total.
yes, I am on it now for those of you who are "slow". //I had it plugged in during the test, but no charge. Power Efficiency Diagnostics Report Computer Name LAPTOP-TEK9BJPL Scan Time 2018-05-11T03:28:50Z Scan Duration 60 seconds System Manufacturer LENOVO System Product Name 80S6 BIOS Date 01/23/2016 BIOS Version 0YCN13WW OS Build 14393 Platform Role PlatformRoleMobile Plugged In false Process Count 102 Thread Count 1187 Report GUID {1d5f5a1d-e3b4-48d9-a37b-3c6c9e2108d3} Analysis Results Errors Power Policy:Power Plan Personality is High Performance (On Battery) The current power plan personality is High Performance when the system is on battery power. Power Policy:Sleep timeout is disabled (On Battery) The computer is not configured to automatically sleep after a period of inactivity. Power Policy:802.11 Radio Power Policy is Maximum Performance (On Battery) The current power policy for 802.11-compatible wireless network adapters is not configured to use low-power modes. Power Policy:PCI Express ASPM is disabled (On Battery) The current power policy for PCI Express Active State Power Management (ASPM) is configured to Off. Power Policy:Power Plan Personality is High Performance (Plugged In) The current power plan personality is High Performance when the system is plugged in. Power Policy:Sleep timeout is disabled (Plugged In) The computer is not configured to automatically sleep after a period of inactivity. Power Policy:Minimum processor performance state is 100% (Plugged In) The processor is not configured to automatically reduce power consumption based on activity. Power Policy:PCI Express ASPM is disabled (Plugged In) The current power policy for PCI Express Active State Power Management (ASPM) is configured to Off. System Availability Requests:System Required Request The program has made a request to prevent the system from automatically entering sleep. Requesting Process \Device\HarddiskVolume4\Windows\explorer.exe System Availability Requests:Execution Required Request The program has made a request for execution-required. Requesting Process \Device\HarddiskVolume4\Windows\explorer.exe System Availability Requests:System Required Request The program has made a request to prevent the system from automatically entering sleep. Requesting Process \Device\HarddiskVolume4\Windows\System32\dllhost.e xe System Availability Requests:Execution Required Request The program has made a request for execution-required. Requesting Process \Device\HarddiskVolume4\Windows\System32\dllhost.e xe USB Suspend:USB Device not Entering Selective Suspend This device did not enter the USB Selective Suspend state. Processor power management may be prevented when this USB device is not in the Selective Suspend state. Note that this issue will not prevent the system from sleeping.. Device Name USB Mass Storage Device Host Controller ID PCI\VEN_8086&DEV_22B5 Host Controller Location PCI bus 0, device 20, function 0 Device ID USB\VID_0781&PID_5581 Port Path 8 CPU Utilization:Processor utilization is high The average processor utilization during the trace was high. The system will consume less power when the average processor utilization is very low. Review processor utilization for individual processes to determine which applications and services contribute the most to total processor utilization. Average Utilization (%) 42.47 Device Drivers: Devices with missing or misconfigured drivers can increase power consumption. |
#2
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On Friday, 11 May 2018 04:41:46 UTC+1, Python Studios wrote:
I was watching a youtube video when I realized that my ac/dc adapter was unplugged from the wall and grounding unit. I plugged it back in and my laptopl froze then made a loud buzzing sound. I imeditaly turned it off and on, there were 0 probelms. Then, when I made sure that my power cord was working, I plugged it in and nothing. When I remove it, the screen flashes black for about 1/5 of a second this is only external. I don't know if my adapter has been fried or the power component in my laptop has been. I am rushing this post because I only have 17% left on my latptop and this is the only device I have. I am backing up everything and I also ran power diagnostics.. Please, if you have any information on how to check if one is broken or the other, respond immeditally. Sorry for the bad post, but time is limited. Tomorrow, I am going to try and build a charger (usb) for it with some extremely low output batteries and capacitors 130maH in total. yes, I am on it now for those of you who are "slow". a multimteter will tell you what's coming out of the psu. junk snipped |
#3
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#4
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On Friday, 11 May 2018 07:19:02 UTC+1, mike wrote:
On 5/10/2018 11:14 PM, tabbypurr wrote: On Friday, 11 May 2018 04:41:46 UTC+1, Python Studios wrote: I was watching a youtube video when I realized that my ac/dc adapter was unplugged from the wall and grounding unit. I plugged it back in and my laptopl froze then made a loud buzzing sound. I imeditaly turned it off and on, there were 0 probelms. Then, when I made sure that my power cord was working, I plugged it in and nothing. When I remove it, the screen flashes black for about 1/5 of a second this is only external. I don't know if my adapter has been fried or the power component in my laptop has been. I am rushing this post because I only have 17% left on my latptop and this is the only device I have. I am backing up everything and I also ran power diagnostics. Please, if you have any information on how to check if one is broken or the other, respond immeditally. Sorry for the bad post, but time is limited. Tomorrow, I am going to try and build a charger (usb) for it with some extremely low output batteries and capacitors 130maH in total. yes, I am on it now for those of you who are "slow". a multimteter will tell you what's coming out of the psu. It's hard to get a connection to the interface between the PS and the computer when it's plugged in. Measuring the PS unloaded can tell you if it's dead, but not much else. junk snipped It's the first thing I'd do. What's the first thing you'd do? NT |
#5
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#6
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On Fri, 11 May 2018 18:39:53 +0100, "Gareth Magennis"
wrote: I read this occasionally, but I have never come across an SMPS that will not run without a load. I have come across some that show overvoltage with no load, however. Gareth. Don't most PC power supplies stay off until that one pin is grounded on the 24 pin motherboard connector? True that isn't exactly what you were talking about, but it might give a novice the impression the supply won't start without a load becasue unplugging the load shuts down the supply. |
#7
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#8
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I don't know if you have any repair resources near you.
I'll tell my story. I had a laptop with a bad power jack. I went on youtube and watched videos on how to disassemble this brand of laptop. It's a daunting task, they aren't made to come apart easily, and that power jack is very vulnerable. And then, before I did it, I took the laptop to Staples to their "free diagnosis" desk. They connected it to a universal power supply, one of those that comes with several connector pins. Surprise, it booted right up and charged fine. Even though everybody I talked to was sure it was the laptop, the power supply was the actual problem. All I had to do was buy the new supply. |
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