Author Topic: EEVblog #463 - More Dumpster Diving  (Read 11536 times)

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Offline nitro2k01

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EEVblog #463 - More Dumpster Diving
« on: April 27, 2013, 11:23:00 am »
Whoa! How the hell did Dave know that Bob is my uncle? Amazing!
 

Offline nitro2k01

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Re: EEVblog #463 - More Dumpster Diving
« Reply #1 on: April 27, 2013, 11:26:02 am »
I know that chipset is Realtek. I know this only because I've seen that funky crab logo before, on modem cards. It's a memorable logo in comparison to other logos on chips, imo.
Whoa! How the hell did Dave know that Bob is my uncle? Amazing!
 

Offline ResR

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Re: EEVblog #463 - More Dumpster Diving
« Reply #2 on: April 27, 2013, 11:50:37 am »
To unscrew those seal screws I used to push onto the screwdriver to force it open or use a steel drill to file the screw head off, maybe that is helpful?
 

Offline peter.mitchell

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Re: EEVblog #463 - More Dumpster Diving
« Reply #3 on: April 27, 2013, 12:01:41 pm »
To unscrew those seal screws I used to push onto the screwdriver to force it open or use a steel drill to file the screw head off, maybe that is helpful?
I usually just tighten the screw until what it is threaded into breaks, or until the bit it is clamping snaps from the extra force.
 

Offline ddavidebor

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Re: EEVblog #463 - More Dumpster Diving
« Reply #4 on: April 27, 2013, 12:30:14 pm »
To unscrew those seal screws I used to push onto the screwdriver to force it open or use a steel drill to file the screw head off, maybe that is helpful?
I usually just tighten the screw until what it is threaded into breaks, or until the bit it is clamping snaps from the extra force.


i used to do this way too.
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Offline peter.mitchell

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Re: EEVblog #463 - More Dumpster Diving
« Reply #5 on: April 27, 2013, 12:54:18 pm »
superglue/hotglue/silicone/liquid nails and its all back together neat and tidy.
 

Offline free_electron

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Re: EEVblog #463 - More Dumpster Diving
« Reply #6 on: April 27, 2013, 03:20:54 pm »
GET THE PHASER !!!
Those squirt hot wax instead of the classical powdered toner !
The 'ink' is a block of colored wax that is melted and squirted like an inkjet...

3d printer anyone ? Might be a killer extruder !

That usb hub is real quality. There's even common mode chokes on the datalines !
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Online Monkeh

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Re: EEVblog #463 - More Dumpster Diving
« Reply #7 on: April 27, 2013, 03:43:39 pm »
I know that chipset is Realtek. I know this only because I've seen that funky crab logo before, on modem cards. It's a memorable logo in comparison to other logos on chips, imo.

Yep, it's easy to spot so you can stay away from it!

The UPS probably just needs a battery. Hook a PSU up to it and see if it comes on.
 

Offline G7PSK

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Re: EEVblog #463 - More Dumpster Diving
« Reply #8 on: April 27, 2013, 03:44:29 pm »
Those cam head screws will usually unscrew if you use a sharp screwdriver with plenty of pressure, they just bite into the screw head enough to undo the screw if that does not work hold the screwdriver down hard with some torque to undo the screw and lightly tap the screwdriver handle with a hammer, I have never had one that did not come undone.
 

Offline David_AVD

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Re: EEVblog #463 - More Dumpster Diving
« Reply #9 on: April 27, 2013, 11:00:45 pm »
That UPS battery looks to be a standard 12V 7.2Ah type.  When they fail you can sometimes hear them rattle when you shake them.

Like Monkeh says, hook up your bench supply and give it a whirl.  Do it without mains so the UPS doesn't try to charge your power supply of course.
 

Offline ecat

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Re: EEVblog #463 - More Dumpster Diving
« Reply #10 on: April 27, 2013, 11:30:09 pm »
GET THE PHASER !!!
Those squirt hot wax instead of the classical powdered toner !
The 'ink' is a block of colored wax that is melted and squirted like an inkjet...

 :-+

If it is one of the solid ink (wax) printers it's certainly worth a quick look. Totally unlike a normal laser and the output on the few prints I've seen is beautiful - slightly raised, slight shine, it really stand out.
 

Online xrunner

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Re: EEVblog #463 - More Dumpster Diving
« Reply #11 on: April 27, 2013, 11:30:40 pm »
I had a failed LCD monitor I took apart last year. I didn't use any of the electronics but I did keep some of the mechanicals. It had a very nice large piece of plexiglass, and several nice thin sheets of translucent and pure white plastic I can use for modelling.  :)
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Offline JackOfVA

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Re: EEVblog #463 - More Dumpster Diving
« Reply #12 on: April 28, 2013, 12:20:45 am »
Removing the security screws may be an application for a left handed drill bit. The drill will cut into the head and since it's a left handed bit, the drilling torque will act to back the screw out. Even if the screw does not back out, if the head is drilled off, you can separate the enclosure halves and remove the screw body with a pair of locking pliers.
 

Offline EEVblog

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Re: EEVblog #463 - More Dumpster Diving
« Reply #13 on: April 28, 2013, 12:24:58 am »
If it is one of the solid ink (wax) printers it's certainly worth a quick look. Totally unlike a normal laser and the output on the few prints I've seen is beautiful - slightly raised, slight shine, it really stand out.

It's jut a crappy mono laser Phaser.
 

Offline Mr Smiley

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Re: EEVblog #463 - More Dumpster Diving
« Reply #14 on: April 28, 2013, 02:14:17 am »
Hi Dave,

I see that dead monitor is a LED backlight unit.

Any chance of giving us a look at the led back lighting matrix layout.

You might have a lifetime supply of rgb leds there

Many thanks

Mr Smiley  :)
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Offline cwalex

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Re: EEVblog #463 - More Dumpster Diving
« Reply #15 on: April 28, 2013, 04:19:50 am »
I have removed those security screws before by dremeling a slot into the head and using a flathead to remove it. Only works if you can get the dremel in there though.
 

Offline DavidDLC

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Re: EEVblog #463 - More Dumpster Diving
« Reply #16 on: April 28, 2013, 07:23:16 am »
I do something similar, but instead a dremel I use my micro mill machine. It works very good as well.

David.
 

Offline nitro2k01

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Re: EEVblog #463 - More Dumpster Diving
« Reply #17 on: April 28, 2013, 08:11:06 am »
You might have a lifetime supply of rgb leds there
Why would they use RGB LEDs? Yeah, the light spectrum is different, and possibly better suited for blocking with an LCD because of the narrow wavelength, but I don't think they'd bother. At least not on a cheapo panel like this.
Whoa! How the hell did Dave know that Bob is my uncle? Amazing!
 

Offline FrankT

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Re: EEVblog #463 - More Dumpster Diving
« Reply #18 on: April 28, 2013, 08:17:11 am »
KVMs often use custom cables.  Did you keep them?
 

Offline maddhatter

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Re: EEVblog #463 - More Dumpster Diving
« Reply #19 on: April 28, 2013, 08:51:57 am »
With the UPS - try a new battery.

Typically (maybe not on this particular model, but on many others) there is battery failed protection which prevents mains input unless the battery is good.






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Online SeanB

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Re: EEVblog #463 - More Dumpster Diving
« Reply #20 on: April 28, 2013, 10:27:01 am »
Got the Phaser 340, works, but the running costs are astronomical...... But black is free, though you will have to spend at least $100 per turn on, and $500 per month if you keep it on.

Was nice to strip it's cousin, as it had been switched off with a paper jam.............. Scratch one printer.
 

Offline ResR

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Re: EEVblog #463 - More Dumpster Diving
« Reply #21 on: April 28, 2013, 11:00:56 am »
...Any chance of giving us a look at the led back lighting matrix layout.

You might have a lifetime supply of rgb leds there ...
My grandmother has a finlux led lcd tv that has a array of white LED's (blue led with yellow fluorescent) at the top and bottom edge of the screen, the weird construction allowed to see some of the LED's from the back panel ventilation grid. I would love to see the rgb version of backlighting too.
 

Offline NiHaoMike

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Re: EEVblog #463 - More Dumpster Diving
« Reply #22 on: April 28, 2013, 01:57:42 pm »
I have removed those security screws before by dremeling a slot into the head and using a flathead to remove it. Only works if you can get the dremel in there though.
A common drill defeats them, too.

You might be able to use the driver board to replace one in another monitor that has a bad (as in buggy) driver board and a LCD with the same native resolution. (Assuming, of course, the driver board you salvaged isn't also buggy!) I have a 1080p Viore monitor that has a great panel but a really horrible driver board (HDMI is cut off on all 4 sides and it takes a really long time to boot up). The only solutions I have found cost at least a significant percentage of just buying a new monitor.

Or you can just hook up the LVDS outputs to a FPGA board and get a video input on your FPGA without having to deal with all of the HDCP, EDID, and whatnot.
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Offline peter.mitchell

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Re: EEVblog #463 - More Dumpster Diving
« Reply #23 on: April 28, 2013, 02:52:38 pm »
or you could just screw them up until there is no thread left in the plastic then pull the cover off? when you put it back together you're going to use different screws (that have a normal head), so you just get some with a bigger thread so they bite.
 

Offline Unixon

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Re: EEVblog #463 - More Dumpster Diving
« Reply #24 on: April 28, 2013, 05:35:22 pm »
Dave, make a T-shirt with the image from that broken monitor. It is enough artistic for that.  :-+
 


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