Canon PowerShot G9 Disassembly Part II
必要な工具と部品
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The Canon PowerShot G9 made its debut around 2007. With 12.1 mega pixels and 3200 ISO, it's easily one of the more economical choice for amateur and hobbyists.
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I mean, after 10 years it's still pretty good. The 12.1 mega pixel is more than needed, coupled with a 6x optical zoom to take sharp photos of everyday objects.
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It got a few scuffs and maybe some dings and some paint scraped off (or it fell off on itself) but it's still very capable.
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And yep, I did took out that 10 year old SD card. A miracle that it still works after a trip to the washing machine.
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For starters, we'll pop out that battery.
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And the SD card, if you had not done that already.
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The battery tolls in a good 720mAh @ 7.4 V with a capacity of 5.3Wh.
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And ... there is a battery-eliminator for the G9 if you happen to take lots of photos indoors. Proof? A trap-door like mechanism on the side of the battery compartment -- for the wires to go in and out.
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We'll start
attackingremoving the screws on the outside of the machine. -
Which tolls in at ... 6?
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I'm not sure if there are screws around the mounting point (for the camera tri-pods). I don't have it on my unit ...
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I know there will be a LOT of screws, so prepare some
food container... containers.
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So this part would be empty.
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There will be a screw on the bottom holding down the display, so you will unscrew that ...
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And then you would push the screen toward the bottom of the camera with your fingers.
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And then the screen will ....
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???
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The flex cable had still a long way to go before being "free". Apparently we would need to remove the steel brackets ...
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So this is how the camera looks like ...
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I'll DEFINITELY leave that for later. Look at that flex cable. It had a scary amount of connection AND test point.
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So what are we here to do? We are supposed to remove everything, which includes the motherboard, and then I'll take apart the lens and clean its insides and outsides. Or I think I am going to do that.
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We had this ELPIDA DDR3 RAM HB0010A17EE for ... shots buffers?
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Which is overlaid on ... a processor?
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We had the Sony D4807GA823DG4V
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15019GB 7MR4G 07G
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We had a unnamed IC and another ... IC on the front. But hey ... this one on the back is REALLY eye-catching. A exposed-die processor!
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Could this be the GPU?
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And to remove the motherboard, we will need to remove the top assembly (which appears to be a single large piece) which requires removal of the front ...
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Cover? Panel? Plate?
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Start by prying near the TOP of the front plate. There is a plastic tab holding it.
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Hello .... how are you doing there?
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And ...
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BOOBY TRAP!
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Sadly, this is largely how it would be done. That tiny connector is for the microphone on top of the machine, near the function wheel.
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Look at that assembly! It's absolutely monstrous -- the numerous dials, the power button, the playback button, the hot shoe ...
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Some of which looks unnecessarily delicate, but hey, these are dials. Non-digital dials that use physical contact on every single click. And the copy-paste button (that's how I call it) had its own light.
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So how exactly on earth should I do to remove these stuff without snagging a single copper line on these flex cables?
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Answer: inter-board connectors.
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BOOM! You're out.
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Which leave us with this power board ...
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Apparently the power is directed to the entire "system" part through this single connector, so the board is free to move after the screw is removed ...
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Now, after careful observation I cannot find significant exposed areas of high voltage.
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Perhaps as we progress we will able to figure something out.
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Let's wedge this hot potato out of this place!
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Canon had done a very good job insulating the circuit on the top half.
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The wires lead to solder joints on the board, which are exposed.
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Perhaps the different lights require different voltages and this one is more docile. or ... perhaps the circuit is only charged when a flash is imminent
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Now this is what I am left with ...
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This is very intricate and delicate equipment. I can hardly see a single screw here either ...
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Let's pick at it ...
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Literal. These things are so tiny and fragile, anything (including those prying tools) will probably bend them too far (and break them).
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So let's grab a needle ...
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Start with connectors? I mean I can't see anything else ...
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Ah, this motor. Spring contacts too. Wonder if they still had these today.
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I do expect a little more of these switches ... they are currently just customized brushes on top of customized PCB ...
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At least these are operating on low voltages and current, otherwise the entire thing will be filled with oxidation marks and black gunk.
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But let's face it -- that shutter button is pretty cool, in any case.
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To reassemble the device, follow the guide in reverse order.
To reassemble the device, follow the guide in reverse order.
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