Showing posts with label netbook. Show all posts
Showing posts with label netbook. Show all posts

Monday, November 3, 2014

Netbook hinge repair

What happens when you buy a netbook on auction for a friend, advertised as used in great condition with minimal wear and then the scammy seller sends you a machine that had it's hinge support posts broken off and what's worse: destroyed by a less than useful kludge? Well, if you're like me then after the negotiations have gone nowhere and the seller got the well deserved negative feedback (won't go there) you start thinking of ways to salvage the situation.

Here's the horror show:





You can't see it but basically someone tried soldering the metal threaded inserts into the plastic and once they were either satisfied with their "work" (the thing and beads of solder were rolling around inside the case when I got it..) or they realized the futility of their actions they then proceeded to drown everything in super-glue.

Turns out I should've done my research because the hinge supports were notoriously bad on this model and a large percentage of them that I've seen advertised since have had the same issue (minus the butchery of course)
The machine itself is some off-brand cheapy so got what I deserved and paid for, I guess..


The support posts were beyond hope so after racking my brain for a little while I came up with a following solution:

  • Cleaned up everything and filed off all the broken and melted parts until the stubs were level.
  • Drilled and countersunk holes from the top of the case where the posts were (or at least that was the plan but plastic just grips and pulls the drill bit so they both went a bit too deep, eh..)
  • Added long screws through the countersunk holes and spacers from a plastic tube on the inside (as a prosthetic to replace the broken sections of the support posts)





So now I could tighten the case together by using a nut where the screw went originally.

I also cleaned up the hinges (which were really seized up with grime and some leaked super glue) using dental floss and a tiny amount of mineral oil which worked really surprisingly well.

Did this quite a while ago and the machine (and hinges) have been in constant, daily use for the past 5 months at least. So far they're holding up great.

As an added bonus, the same person who botched up the case also turned out to have replaced the CMOS battery at some point by ripping the spot-welded tabs off the original and and loosely duct-taping them to a new one...


After all that the machine still has some sort of issue that I couldn't figure out but I'm sort of guessing that that's BGA-related so I'm not going to bother with it. It hard-locks under heavy load when cold booted (literally.. once it has warmed up the issue can't be reproduced. *shrug*)

Monday, March 25, 2013

KludgEee

Couple of years ago I bought a supposedly broken EEE 901 netbook motherboard for $5. Not really sure what I wanted with it. Could've been during a time when I wanted to practice soldering BGAs or maybe I just couldn't pass it up for the price. Either way the motherboard turned out to function perfectly. What now?

The thing ended up at the bottom of one of my junk boxes surfacing from time to time to help test the odd monitor. Then around two weeks ago I realized I have enough junk lying around in random boxes for a functioning PC.
While not doing a very good job at it I'm constantly trying to do something with stuff that's just taking up space and doing nothing because it annoys me. Combining them into a single piece is one way ease that so I finally broke down and decided to build a Trash PC.





Ingredients:
The aforementioned EEE motherboard
1 GB DDR2 SO-DIMM ram
The cheapest Chinese mSATA/SATA converter card I could find (that I had to ghetto-solder a SATA-cable to because it wouldn't fit into the mobo with the connector in place)
Samsung 20GB 2.5" HDD (this was inside a Chinese Xbox HDD. Sold the enclosure for a profit, kept the hdd. Result: 1 (almost) Free HDD!)
Intel 4965ABGN miniPCIe wifi card from a Lenovo laptop, that was the main reason for the previous article.
Antenna connector/cable from a  miniPCIe PCIe WLAN adapter card
3 random heatsinks from the junk-box
Random fan from the junkbox
VGA breakout cable from previous scrapped case-build project
The case of an ancient Amstrad Satellite STB from the dumpster
A piece of veroboard and a switch from the junkbox (power button)
A chinese USB IR PC-Remote (actually not bad for $4.38)
A KIS3R33S based 5V reg built on a piece of veroboard (power supply for the HDD)
Random salvaged wires, mounting screws, nuts, a piece of PCB, zipties, epoxy and hot glue!




The idea was basically: The simpler/easier the mounting option the better, the less holes to drill the better, the less time it takes the better. As long as it stays in one piece everything goes.

The end result is inevitably kludgey and trashy but in the end it works, doesn't fall apart from a jostle and only looks as hideous from the outside as the STB case did to begin with so.. All good!








I didn't take any pictures during the build because I wanted to be done with it ASAP that's why there are only ones of the finished box.


With a $13 VGA/Composite converter it might even see some use on an old CRT TV as an IPTV and media player box now. The 900Mhz Celeron CPU is enough for SD streams and SD content.

I measured the DC power consumption on a whim:
Standby: 1.4W, Idle: 16W, Peak: 22W