Author Topic: EEVblog #1299 - Dumpster Laptop REPAIR  (Read 1787 times)

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Offline EEVblog

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EEVblog #1299 - Dumpster Laptop REPAIR
« on: April 09, 2020, 11:15:27 pm »
Repairing a Toshiba Satellite S40-B Laptop found in the dumpster.

Library: https://lbry.tv/@eevblog:7/

 
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Offline johnlsenchak

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #1 on: April 09, 2020, 11:38:23 pm »


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     ! 8)
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Offline roadran422

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #2 on: April 10, 2020, 12:47:02 am »
What's that adapter assortment that Dave uses? I'd like to get one!
 

Offline johnlsenchak

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #3 on: April 10, 2020, 12:49:57 am »
What's that adapter assortment that Dave uses? I'd like to get one!

I agree  with you that's a real nice  set 
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Offline jancumps

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #4 on: April 10, 2020, 01:19:01 am »
the 121gw app is a reasonable replacement for the Paul Daniels app.
 

Offline EEVblog

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #5 on: April 10, 2020, 07:05:44 am »
the 121gw app is a reasonable replacement for the Paul Daniels app.

Didn't think of that, d'oh!
Can add a bluetooth dongle to the capture PC.
 

Offline EEVblog

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #6 on: April 10, 2020, 07:11:42 am »
 
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Offline Ice-Tea

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #7 on: April 10, 2020, 07:15:02 am »
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.  :-- :--
 
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Offline jancumps

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #8 on: April 10, 2020, 12:16:32 pm »
the 121gw app is a reasonable replacement for the Paul Daniels app.

Didn't think of that, d'oh!
Can add a bluetooth dongle to the capture PC.

If you want it to be on top always, you can use turbotop (freeware, not mine, there are other options too) to set the 121GW window always on top.
 

Offline amyk

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #9 on: April 11, 2020, 02:25:08 am »
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.
 

Offline tigrou

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #10 on: April 11, 2020, 12:18:05 pm »
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.
Thanks for you answer.
That coil is used to implement a EMI differential mode filter and that is what I wanted to know.
 

Offline spicyjack

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #11 on: April 13, 2020, 06:39:07 pm »
When you say "bridge it over with a link" at 11:22 in 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?
 

Offline thm_w

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #12 on: April 13, 2020, 08:40:38 pm »
When you say "bridge it over with a link" at 11:22 in 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?

Short it out, with a link of copper wire or 0 ohm resistor.
 

Offline NiHaoMike

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #13 on: April 13, 2020, 11:56:10 pm »
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.  :-- :--
If 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.
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Offline Ice-Tea

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #14 on: April 14, 2020, 08:39:12 am »
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.

Offline Lord of nothing

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #15 on: April 16, 2020, 01:48:23 pm »
Dear Mr. Dave
Why not make a "Backup" and try to find the owner of the Laptop?
Maybe the would need some of there Data back?
Thanks
Made in Japan, destroyed in Sulz im Wienerwald.
 

Online wraper

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #16 on: April 16, 2020, 02:00:03 pm »
That's not inductor but ferrite bead. That's why you did not find inductor with adequate current rating in suitable package size.
 

Online wraper

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #17 on: April 16, 2020, 02:19:48 pm »
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.  :-- :--
Might be bad heatpipe if replacing thermal paste and ensuring proper contact with GPU does not help.
 

Offline jancumps

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #18 on: April 16, 2020, 03:35:33 pm »
Dear Mr. Dave
Why not make a "Backup" and try to find the owner of the Laptop?
Maybe the would need some of there Data back?
Thanks


They dumped it. That's a sign of how much they need the data.
 

Offline Lord of nothing

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #19 on: April 16, 2020, 03:49:15 pm »
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.
Made in Japan, destroyed in Sulz im Wienerwald.
 

Offline Ice-Tea

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #20 on: April 17, 2020, 11:42:03 am »
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.  :-- :--
Might be bad heatpipe if replacing thermal paste and ensuring proper contact with GPU does not help.

Never actually considered a bad heatpipe  :-/O

Still should throttle rather than burn itself into oblivion, though...

Online SilverSolder

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #21 on: April 17, 2020, 01:16:26 pm »

[...] should throttle rather than burn itself into oblivion, though...


Planned obsolescence taken to an entirely new level!   ;D
 

Online wraper

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #22 on: April 17, 2020, 01:28:40 pm »
Never actually considered a bad heatpipe  :-/O

Still should throttle rather than burn itself into oblivion, though...
It 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.
 

Offline Ice-Tea

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Re: EEVblog #1299 - Dumpster Laptop REPAIR
« Reply #23 on: April 19, 2020, 03:30:25 pm »
Never actually considered a bad heatpipe  :-/O

Still should throttle rather than burn itself into oblivion, though...
It 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.

It 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 ;)



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