Alienware M17x Laptop motherboard may be dead
We use a laptop to connect to an omron CPM2A serial port for programming and data transfer. Using a usb to serial adaptor and a blackbox connecting cable. The operator of the equipment had a failed ac power plug that powers the plc and changed it reversing the hot and neutral lines. the result was when connecting the plc to laptop it blew out adapter, plc, and laptop. apparently it sent 115 volt ac via ground into usb port of laptop. Laptop appears to try and power up but shuts down after a few seconds. Any repair possible or do i need new motherboard.
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Re: Laptop motherboard may be dead
Post details of the laptop. To avoid downtime, a replacement is probably the quick resolution. In the future, consider to use galvanic isolated USB to serial dongles. -
Re: Laptop motherboard may be dead
The laptop i would like to repair is a Alienware M17x. I agree replace motherboard would be the quickest, but time is really not an issue. I also agree that an isolated dongle would make a lot of sense. WE have used the gear dongle hundreds of times without any problems. never thought of the possibly of the ac wires reversed.Comment
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Alienware M17x Gaming Laptop Schematic...11-01-2024, 04:56 AM
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My venerable and old laptop (Toshiba Satellite P75-A7200 equipped with an i7-4700MQ, circa 2014) and previously a powerful machine during its heyday is no more. Have been using it for many years, but about 3 months ago it went kaputt for no apparent reason (left it on overnight [normally it goes to standby mode after some idle time], and in the morning it was cold dead with no boot, no post, no leds; nothing at all).
Since the 1990s I have been building custom desktop computers, etc; but it has been few years since my last built one and for the last 15 years I have built very few... -
Hi All,
So my friend was visiting and he wanted to use my solder bench to solder on some WLED circuit board. My laptop was open on the side for RAM upgrade. I know my mistake.
So while soldering he had too much solder on the soldering iron tip and he just shook off the soldering iron on the table itself to remove extra solder on the soldering tip and it landed on the motherboard of laptop. He then out of fear tried to remove it using solder wick and did more damage by removing some components as well. So here I am with weird situation.
I have not tried putting... -
I have a dead laptop with mainboard model GS452/552/752 nm-c781 rev 1.0, i have initiated troubleshooting with the use of digital multimeter. checked voltage signals up to PM_SLP_S3#, found out that before PM_SLP_S3# signal , a PBTN_OUT#_R signal has 3.2 volt state and after pressing power on, PBTN_OUT#, It drops to logic level zero for around 12 secs and then back again to 3.2v for 6 secs. it will loop like that until you pulled out the adapter power. during loop the PM_SLP_S3 and S4 SIGNAL has no output. (0 volt ) may i ask for help to anyone with this kind of board and same kind of problem....
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Thank you for deciding to read this topic!
Laptop: NP700Z3A-S02RU
Motherboard: BA92-09470B
I was trying to fix my old laptop that has stopped displaying image a long time ago. It boots up, lights light up, fan spins but no image. Conned it to TV by HDMI cable, but it was unsuccessful. Components look intact, no water damage/corrosion on the board.
I don't really value this laptop too much, so I wanted to ask anyone for a schematic/boardview file or anything that describes motherboard in a simillar faison. I want to experience a challenge of figuring...
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