[Boards: 3 / a / aco / adv / an / asp / b / bant / biz / c / can / cgl / ck / cm / co / cock / d / diy / e / fa / fap / fit / fitlit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mlpol / mo / mtv / mu / n / news / o / out / outsoc / p / po / pol / qa / qst / r / r9k / s / s4s / sci / soc / sp / spa / t / tg / toy / trash / trv / tv / u / v / vg / vint / vip / vp / vr / w / wg / wsg / wsr / x / y ] [Search | Free Show | Home]

Repair laptop, suspect short circuit USB

This is a blue board which means that it's for everybody (Safe For Work content only). If you see any adult content, please report it.

Thread replies: 22
Thread images: 13

File: IMG_20170113_114119.jpg (178KB, 1580x1010px) Image search: [Google]
IMG_20170113_114119.jpg
178KB, 1580x1010px
Yesterday I put a USB stick into my laptop, and immediately the screen went black. Now it won't respond at all. On checking the USB stick, I see that it has foil near the electrical contacts. I suspect this has shift circuited the USB on my laptops motherboard.

Join me now, in a journey to the centre of my laptop, and hopefully we can fix it. Any advice would be appreciated.
>>
File: IMG_20170113_120516.jpg (2MB, 4160x3120px) Image search: [Google]
IMG_20170113_120516.jpg
2MB, 4160x3120px
It's quite old now, and not the greatest, but was still very useful. I'm just about to buy a desktop computer as my main work horse, but I was using the laptop to order parts etc. That's going to be a real pain from my phone...
>>
File: IMG_20170113_121145.jpg (2MB, 4160x3120px) Image search: [Google]
IMG_20170113_121145.jpg
2MB, 4160x3120px
I imagine that I'll just start from the back and continue pulling pieces off until I find the motherboard
>>
File: IMG_20170113_122955.jpg (2MB, 3120x4160px) Image search: [Google]
IMG_20170113_122955.jpg
2MB, 3120x4160px
It appears that after taking out all the screws from the back, the keyboard side actually comes off first. Seems to be a bit stuck though, going to try to remove it without breaking anything.
>>
File: fuse 2016_big.jpg (27KB, 250x180px) Image search: [Google]
fuse 2016_big.jpg
27KB, 250x180px
i would suspect that a fuse blew near the power input socket. might look like one of these. do you have something to test for continuity? (like a multimeter -- not the continuity testers they sell for testing cars.) and, if so, do you know how to test a fuse? should measure 0 ohms across on the lowest ohm scale.
>>
File: IMG_20170113_125225.jpg (2MB, 4160x3120px) Image search: [Google]
IMG_20170113_125225.jpg
2MB, 4160x3120px
I try removing all keys from keyboard ave see if there are other screws behind it
>>
>>1113993
Thanks, I was planning on finding a blown fuse, but I didn't know what they would look like. Do you know what the style of fuse might be called? I do have a multimeter for testing fuses.
>>
File: IMG_20170113_125918.jpg (2MB, 3120x4160px) Image search: [Google]
IMG_20170113_125918.jpg
2MB, 3120x4160px
Okay, finally got the keyboard out , and found more screws behind it... Looking good
>>
>>1114000

you can get names, pictures and specs on various fuses here, for example: http://www.sellifuse.com/SMDfuse.html
>>
File: IMG_20170113_130508.jpg (2MB, 4160x3120px) Image search: [Google]
IMG_20170113_130508.jpg
2MB, 4160x3120px
Looks like a motherboard to me. Holding to find a fuse on the other side of this.
>>
>>1114008
Jesus. Cunting. Christ.

We have had digital cameras for fucking years.

When will you shitlords learn to use the fucking focus?

I hope you loose all the screws and fry the DIMMs you inept fuck.
>>
File: IMG_20170113_153523.jpg (3MB, 3120x4160px) Image search: [Google]
IMG_20170113_153523.jpg
3MB, 3120x4160px
>>1114014
Point taken. The auto focus doesn't work well on my phone, possibly after I dropped it.
>>
File: IMG_20170113_153558.jpg (2MB, 3120x4160px) Image search: [Google]
IMG_20170113_153558.jpg
2MB, 3120x4160px
Trying to tell the difference between a tiny fuse, and a tiny resister
>>
where's the power jack? start looking there.
>>
>>1114076
Yeah, doing that. The power jack is at top right of >>1114072
And at bottom right of >>1114069
>>
ok, those fat traces lead to a tiny 8pin chip, and that white resistor which could be acting as a fuse. i'd google the part # on the chip to see what it does, and measure the resistor.

it's not clear from the pics where the fat traces lead after that lil' chip.
>>
>>1114088
Yeah, I was suspicious of that little white chip. It's code is R020, and is apparently a current sensing resister. I couldn't measure the resistance across it, but I've powered up the board, and it seems to have 19.5 v on either side, so doesn't sound like it's a blown fuse.
>>
File: IMG_20170113_165532.jpg (2MB, 3120x4160px) Image search: [Google]
IMG_20170113_165532.jpg
2MB, 3120x4160px
The two white resister looking components at the centre of this image both read 19.5v on the left side, and 0.00v on the right side. Could they be the problem?
>>
File: IMG_20170113_163407.jpg (2MB, 3120x4160px) Image search: [Google]
IMG_20170113_163407.jpg
2MB, 3120x4160px
Slightly better image. They are each about 3.5mm long.
>>
>>1114104
Those are capacitors. Surface mount resistors are black and have a three-number code on them.
>>
>>1114139
Great tip, thanks. I'm continuing to look.
>>
File: laptop-fuse.jpg (38KB, 500x375px) Image search: [Google]
laptop-fuse.jpg
38KB, 500x375px
Look for one of these guys.
Thread posts: 22
Thread images: 13


[Boards: 3 / a / aco / adv / an / asp / b / bant / biz / c / can / cgl / ck / cm / co / cock / d / diy / e / fa / fap / fit / fitlit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mlpol / mo / mtv / mu / n / news / o / out / outsoc / p / po / pol / qa / qst / r / r9k / s / s4s / sci / soc / sp / spa / t / tg / toy / trash / trv / tv / u / v / vg / vint / vip / vp / vr / w / wg / wsg / wsr / x / y] [Search | Top | Home]

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible.
Read more on this topic here - https://archived.moe/talk/thread/1694/


If you need a post removed click on it's [Report] button and follow the instruction.
DMCA Content Takedown via dmca.com
All images are hosted on imgur.com.
If you like this website please support us by donating with Bitcoins at 16mKtbZiwW52BLkibtCr8jUg2KVUMTxVQ5
All trademarks and copyrights on this page are owned by their respective parties.
Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.
This is a 4chan archive - all of the content originated from that site.
This means that RandomArchive shows their content, archived.
If you need information for a Poster - contact them.