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#1 |
Senior Member
Join Date: Dec 2018
City & State: Tuzla
My Country: Bosnia
I'm a: Knowledge Seeker
Posts: 129
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![]() Hi guys.
The adapter for my external WD My Book was left on the wall socket (extender). I connected the USB cable to the laptop and nothing the disk was dead (I couldn't hear motors). Gosh I got scared that my HDD died on me...I tried other PCs same issue. Then I unpluged the adapter from wall socket(extender) and just flipped it other direction.Now it works. Now I want to know,curiosity killed me,why does it matter in this case,how to adapter is plugged in. |
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#2 |
Great Sage 齊天大聖
Join Date: Dec 2009
City & State: Europe
My Country: some shithole run by Israeli agents
I'm a: Professional Tech
Posts: 26,406
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![]() because the contacts in it are bent or shit?
![]() you need to check that - if it happens with a high current device it could arc and catch fire. |
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#3 |
Badcaps Veteran
Join Date: Feb 2014
City & State: Midlands
My Country: England
I'm a: Professional Tech
Posts: 5,992
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![]() If you were worried you'd lost it, that's an indication you don't have a back up.
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#4 |
Senior Member
Join Date: Dec 2018
City & State: Tuzla
My Country: Bosnia
I'm a: Knowledge Seeker
Posts: 129
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![]() I think you guys did not understand my question.
Perhaps I need to draw? |
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#5 |
Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,081
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![]() Simple explanation that doesn't make any assumptions:
You're getting DC electricity at your wall socket and your power supply is half wave. However this is very unlikely and probably as stj says - your contacts in the extension cord are bad and plugging it in the other way happened to make things connect properly. AC electricity shouldn't matter which way you plug it in as the next cycle it looks like the same as before. If your electricity is not quite clean like has a large DC offset it could do this, while still "AC" it will confuse cheap power supplies that omit a bridge rectifier (or if the bridge rectifier is bad). |
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#6 | |
Senior Member
Join Date: Dec 2018
City & State: Tuzla
My Country: Bosnia
I'm a: Knowledge Seeker
Posts: 129
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![]() Quote:
Doesn't matter,seems like I need to do a video so I can explain things here. |
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#7 |
Senior Member
Join Date: Dec 2018
City & State: Tuzla
My Country: Bosnia
I'm a: Knowledge Seeker
Posts: 129
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![]() Ok so I draw the explanation on the pics:
Works not working meant on External HDD My Book 8TB Last edited by SMDFlea; 01-18-2022 at 02:08 PM.. |
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#8 |
Badcaps Veteran
Join Date: Jan 2015
City & State: worcester
My Country: United Kingdom
I'm a: Knowledge Seeker
Posts: 3,210
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![]() wire might be broken here ...
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#9 |
Senior Member
Join Date: Dec 2018
City & State: Tuzla
My Country: Bosnia
I'm a: Knowledge Seeker
Posts: 129
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![]() Nope.
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#10 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,467
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![]() Please post a short video of what is going on here
__________________
9 PC LCD Monitor 6 LCD Flat Screen TV 30 Desk Top Switching Power Supply 10 Battery Charger Switching Power Supply for Power Tool 6 18v Lithium Battery Power Boards for Tool Battery Packs 1 XBox 360 Switching Power Supply and M Board 25 Servo Drives 220/460 3 Phase 6 De-soldering Station Switching Power Supply 1 Power Supply 1 Dell Mother Board 15 Computer Power Supply 1 HP Printer Supply & Control Board * lighting finished it * These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10% 1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later ) 2 Hem Saw Computer Stack Board All of these had ![]() All of the mosfet that are taken out by bad caps ![]() |
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