Normally, when I plug in my laptop, a light glows on the front to show it is either plugged in or charging (AC) (whether it is on or off). Last week, I plugged it in and this did not happen (the laptop is from Feb. 2013). It is a Toshiba L855. i7. 75V power. Uses 19V DC from adapter. Basic memory and hard drive. No peripherals were attached at the time. USB ports and such still work.
When I opened the lid to turn it on, it worked fine on battery mode. Only the "on" light was lit. The laptop did not "recognize" there was AC attached. The laptop software "health monitor" tells me the battery is good. It seemed to discharge normally when used. In the Device Manager of Windows, the "power-related" items I could find said "working properly." The laptop seems to work fine in battery mode with never an indication that any "power" problem occurred.
I then checked the adapter with a multimeter. It was not showing any "DC output." My house power and other devices/electronics all work fine when plugged in.
I then ordered a new ac/dc charger (same as orginal that came with the laptop). I plugged it in. The proper "AC" light DID come on this time as amber, meaning it was charging, as I had used the laptop in battery mode. I turned it on. The laptop was working OK. The tray icon for the battery said "plugged in/charging" as normal.
However, and this is big, when it was almost done charging, I heard a pop. I looked at the floor where the charger was sitting and a puff of smoke came out of it. I immediately unplugged it. It was hotter than I've felt the previous for sure.
After this, the laptop still seems to work fine in battery mode as described above. Also, the battery did charge that first time to almost full, until the pop/smoke when I unplugged it. So, the battery also did charge and now is discharging at what I guess is the normal rate (I usually don't watch the meter icon. I just use it.), but it seems about right, I figure.
Here is the big question. Do you think the laptop is somehow now damaging the ac/dc adapter (crazy!) or do you think I just happened to get a bad replacement adapter.? It seems too coincidental two went down at the same time but one never knows. Any advice/info on checking this problem? I can't find any example of such a potential "unusual" problem when searching the web. Thank you.
Additional note: After I found out the AC was not working as described above with the original adapter, and I turned it on in battery mode, the battery power was at full. I take that to mean that the original charger did not "die" during use. Otherwise, the laptop would have switched to battery power and used some of that up. Also, and this assumes the "lights" give accurate information, the AC light would have been on (and then turned off) when I turned off the laptop because I always watch that. Also, I don't know the original popped or smoked like the replacement, as I didn't smell anything (or heard when in the room) like with the replacement. When the replacement smoked, I could smell it. My point is, I have no indication (unfortunately) that the original failed the same way as replacement. Weird. Also, I do not know whether to just try another adapter or try to get the laptop serviced based on the information I have provided.
Edited by Bt60SA, 15 July 2014 - 02:23 AM.