EEVblog #1299 - Dumpster Laptop REPAIR - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: April 09, 2020, 11:15:27 pm
content: Repairing a Toshiba Satellite S40-B Laptop found in the dumpster.Library:https://lbry.tv/@eevblog:7/

author: johnlsenchak
author_rank: Frequent Contributor
timestamp: April 09, 2020, 11:38:23 pm
content: Normally with those cheap laptops, it's either the Super I/O chip or the MOSFET's in the front end of the motherboard board power supply that switches between a battery and the charger brick Or you can try replacing that inductor !

author: HighMans
author_rank: Contributor
timestamp: April 10, 2020, 12:47:02 am
content: What's that adapter assortment that Dave uses? I'd like to get one!

author: johnlsenchak
author_rank: Frequent Contributor
timestamp: April 10, 2020, 12:49:57 am
content: Quote from: roadran422 on April 10, 2020, 12:47:02 amI agree with you that's a real nice set

author: jancumps
author_rank: Unknown
timestamp: April 10, 2020, 01:19:01 am
content: the 121gw app is a reasonable replacement for the Paul Daniels app.

author: EEVblog
author_rank: Unknown
timestamp: April 10, 2020, 07:05:44 am
content: Quote from: jancumps on April 10, 2020, 01:19:01 amDidn't think of that, d'oh!Can add a bluetooth dongle to the capture PC.

author: EEVblog
author_rank: Unknown
timestamp: April 10, 2020, 07:11:42 am
content: Quote from: roadran422 on April 10, 2020, 12:47:02 amhttps://www.aliexpress.com/item/4000453165792.html

author: Ice-Tea
author_rank: Super Contributor
timestamp: April 10, 2020, 07:15:02 am
content: Got an S50, visually identical but with a 5th gen Core and a whimpy AMD discrete GPU. Worst. Thermal. Design. Ever.It's not that it throttles. It's that it doesn't throttle enough. That it constantly runs the GPU @ 100C is terrible already, that it shuts down when playing a game is just unacceptable.Yes, the fan is clean. The laptop is raised, vents completely free for free airflow. Still craps out. And then it's locked untill you take out the battery and power plug. Unresponsive otherwise. That was a fun moment, when I hadn't figured that out yet.

author: jancumps
author_rank: Unknown
timestamp: April 10, 2020, 12:16:32 pm
content: Quote from: EEVblog on April 10, 2020, 07:05:44 amIf you want it to be on top always, you can useturbotop(freeware, not mine, there are other options too) to set the 121GW window always on top.

author: amyk
author_rank: Super Contributor
timestamp: April 11, 2020, 02:25:08 am
content: I don't know about the S40-B because I couldn't find the info, but the S40-A cross-references to a Compal OEM, LA-9863P, for which it's easy to find a schematic --- and that one has nothing but a 7A fuse and two ferrite beads on the input.

author: tigrou
author_rank: Regular Contributor
timestamp: April 11, 2020, 12:18:05 pm
content: Quote from: amyk on April 11, 2020, 02:25:08 amThanks for you answer.That coil is used to implement a EMI differential mode filter and that is what I wanted to know.

author: spicyjack
author_rank: Unknown
timestamp: April 13, 2020, 06:39:07 pm
content: When you say "bridge it over with a link" at11:22in on the video, does that mean bypass (short the) component out, or replace the inductor with something else? If "link" means "something else" in this case, what would be that something else?

author: thm_w
author_rank: Super Contributor
timestamp: April 13, 2020, 08:40:38 pm
content: Quote from: spicyjack on April 13, 2020, 06:39:07 pmShort it out, with a link of copper wire or 0 ohm resistor.

author: NiHaoMike
author_rank: Super Contributor
timestamp: April 13, 2020, 11:56:10 pm
content: Quote from: Ice-Tea on April 10, 2020, 07:15:02 amIf the bottom is made of metal, add some thermal pads. In a few instances, you can even enhance the thermal coupling to a metal chassis.

author: Ice-Tea
author_rank: Super Contributor
timestamp: April 14, 2020, 08:39:12 am
content: Metal. Haahhhahaha! Pretty sure they would have made the heatsink and radiator in plastic if they could.Seriously, no mettal to be found on the bottom. Or top.

author: Lord of nothing
author_rank: Super Contributor
timestamp: April 16, 2020, 01:48:23 pm
content: Dear Mr. DaveWhy not make a "Backup" and try to find the owner of the Laptop?Maybe the would need some of there Data back?Thanks

author: wraper
author_rank: Unknown
timestamp: April 16, 2020, 02:00:03 pm
content: That's not inductor but ferrite bead. That's why you did not find inductor with adequate current rating in suitable package size.

author: wraper
author_rank: Unknown
timestamp: April 16, 2020, 02:19:48 pm
content: Quote from: Ice-Tea on April 10, 2020, 07:15:02 amMight be bad heatpipe if replacing thermal paste and ensuring proper contact with GPU does not help.

author: jancumps
author_rank: Unknown
timestamp: April 16, 2020, 03:35:33 pm
content: Quote from: Lord of nothing on April 16, 2020, 01:48:23 pmThey dumped it. That's a sign of how much they need the data.

author: Lord of nothing
author_rank: Super Contributor
timestamp: April 16, 2020, 03:49:15 pm
content: Some people dont know how easy is to fix somethink. So the toss it away.Since Dave dont say its from residential or business we can guess if the use a backup or not.

author: Ice-Tea
author_rank: Super Contributor
timestamp: April 17, 2020, 11:42:03 am
content: Quote from: wraper on April 16, 2020, 02:19:48 pmNever actually considered a bad heatpipeStill should throttle rather than burn itself into oblivion, though...

author: SilverSolder
author_rank: Super Contributor
timestamp: April 17, 2020, 01:16:26 pm
content: Quote from: Ice-Tea on April 17, 2020, 11:42:03 amPlanned obsolescence taken to an entirely new level!

author: wraper
author_rank: Unknown
timestamp: April 17, 2020, 01:28:40 pm
content: Quote from: Ice-Tea on April 17, 2020, 11:42:03 amIt shuts down due to overheat protection, not burn. It's normal operating temperature should be something like up to 95oC where it throttles. You cannot throttle down to level of idle heat dissipation when game is running.

author: Ice-Tea
author_rank: Super Contributor
timestamp: April 19, 2020, 03:30:25 pm
content: Quote from: wraper on April 17, 2020, 01:28:40 pmIt doesn't throttle, or at least not significantly. That's the whole point. And it doesn't allow access to any of the tweaking tools out there. Otherwise, I'd reduce the clocks myself. Only thing that works is unplug the adapter, after which it runs at much lower clocks. Think I'll be going Renoir once 17" laptops with it become available