[Asus  Eee Pad Transformer Prime] compuw22c:
So as many people here know, the rear camera is a sore point on the Transformer Prime, in that it's known to go bad early and often. Not to beat a dead horse, here's how we fix the situation:

Replacing the rear camera module:

Yes it seems logical that this would be all you would need, but I've just confirmed myself that in fact it is only the camera module with a problem. The main issue with the fix is FINDING a good camera. I was a bit discouraged on my first attempt as I bought a rear camera on ebay listed as "working" from a parted out Transformer Prime only to go to the hassle of installing it and it not working. I can't say I was surprised, but after trying to find one for so long I took the chance. Upon recieving my refund, I purchased another rear webcam that surprisingly also surfaced. The seller for this second camera had TONS of feedback, and mostly products with the word "foxconn" in the title, indicating this guy seems to have a line on foxconn surplus parts, which for us is awesome. The camera I received appears to be brand new and fired up immediately! Not trying to push a particular seller but since many people are probably looking for this part, I'll post the link http://www.ebay.com/itm/Asus-Eee-Pa...?pt=US_Tablet_Accessories&hash=item416a33f1f9. The seller is skyline27 and he appears to have one left right now (I bought the second). NOW, enough theory, onto the howto.

HOWTO (the good stuff)

0. Turn off Tablet (thanks whycali)

1. Remove screen as instructed in other disassembly threads (wifi fix threads, etc) Advice for this includes working from the bottom first, being vary carefly to NEVER use the pry tool at either the latch holes or the bottom port, as these very thin pieces of aluminum will bend. Get your tool in (heh heh) to the left or right of these "holes" in the case, then slide the tool sideways past them to avoid prying outwards. Get the entire bottom free, then slowly work up the sides with your plastic tools/credit card. When you get to the top, try gently pulling the screen "Down" or the port. You can also pull up like the rest, but when I disassembled I saw what looked like "hooks" that made me want to slide the top out last by pulling it towards the dock port.

1.2 (I forgot) Flip switch on right side of motherboard (top board) that will disconnect power to the motherboard before disconnecting the battery. Don't forget to switch it back when finished, or it won't turn on. (thanks whycali)

1.5 (I forgot) unscrew and remove flash and microphone at top

2. You can either disconnect the screen ribbon cable from the motherboard *top board* (makes your life easier) or simply set the screen upside down, rotated 90, and to the left of the opened prime. This allows the cables to sit fairly easily, though since you'll be removing the motherboard anyways it may be easier to unplug

3. Unscrew 8 battery screws, carefully unplug wide connector (I used precision flathead to the left and right of plug as to not 'yank'). Set battery aside.

4. Be sure every cable is unplugged from the Motherboard. This includes a small battery on the left side, the power button/volume cable top left, as well as the speaker cable on the right side.

5. Remove all motherboard screws. Be sure you get them all, you don't want to snap the motherboard in half in a minute because we'll be pulling against a little adhesive.

6. Be careful. REMOVE MOTHERBOARD This is the step you're most likely to have an issue, but it's still really easy. Time to remove the motherboard. This is easy if you know what to expect.

6a Both cameras are slightly adhesived into their holes, also plugged to back of motherboard. You can either try and pull these with the mobo, or let them stay where they are and pull them out later (probably easier for beginners)

6b There is a thermal pad about 1/3 away from the left where the CPU is. It is a bit adhesive, but not too much

6c MOST IMPORTANT - The motherboard is sort of "sandwiched" into the ports on the sides. That is, it doesn't want to pull straight up and out, the hdmi and headphone jacks are in the way. I believe it's very easy to break the HDMI and/or headphone jack here, yet I haven't yet. 2 ways to approach, one is to pull the side of the tablet outward slightly at the headphone jack to slide it up, allowing you to lift that side of the board, then sliding to the right to clear the hdmi. The second method which I prefer, is pulling up on the mobo from the center, causing the outer edges to pull inward slightly as the board flexes a bit. Choose whichever you prefer

7. Replace the camera. If you're this far along, I really shouldn't have to explain this. The front and rear sit side by side, your front is probably good, there's a piece of tape over the connectors, pull up, replace rear, make sure plugged in firmly on both, replace tape.

Installation is reverse of removal. I recommend plugging the screen ribbon (and all ribbon cables) into the motherboard before reinstalling it, as the connectors are on the bottom of the board and very difficult to get at once installed in the prime. Again, flex the motherboard or prime slightly to clear the ports going back in. Be sure cameras are attached to the motherboard, when installing, be sure to double check one last time that they're still plugged into the board before putting the board down and letting the cameras sit in their plastic holders. And don't forget that internal power switch on the right side of the motherboard.

FWIW, and I'm sure many will disagree with me, but I typically check everything before snapping the screen back up by booting it up with a few sheets of paper between the screen and internals as an extra safety insulator. Check screen, touch screen, both cameras, SD card, speaker, then I snap it shut.

If anyone really needs pictures I think I have a few, though not really specifically of what I was doing, but I could highlight/circle the pics I have if anyone gets stuck.

I really hope I can help others get a working camera who can't/won't RMA for the issue. Now time to UNLOCK MUAHAHAHA!!!