disassemble polaroid pmid702c

[swampratbillybob]

Wow I never thought of that. But then I would of had to keep it because as you said it would be cool too cool for a 3 year old to play with.


Keep Smilin Bill

[sabercatpuck]

Yep, can definitly confirm things

Got my nephew's 702C to work on it. The little "lightning bolt wires" are definitly the innards of the miniUSB connector. The one on my nephew's had popped out completely and I have found the 5 wire's that go inside it. Now to see if I can re-assemble it.

[sabercatpuck]

Got it working

The Power part at least for sure. I put the connector block into a cable to help guide the guts back into position. You do need to make sure that the ends dnt pop too far out the front, if they do the wire may need to be bent a bit to get it back into place. With the end of the wire just barely popping out the end, the top of it should just be visible over the top of the black part of the connector block inside. If they dont then you will likely not get a good connection.
As you are looking at the pins of the recepticle head on with the wide part to the top they are numbered 1 to 5 from left to right. Pin 1 is the +5V, pin 2 is data -, pin 3 is data +, pin 4 is connected to pin 5, pin 5 is ground. So the outermost pins are the important ones for charging. When I did my nephews last night I didn't get the innards in quite the right place before I resoldered it in place, but I was able to gently bend it up so it would make contact to the mini-usb cable using a very small flat tip jewelers screwdriver.

I did take a few pictures through a microscope that showed the old solder points on the board has air bubbles and was very dull looking which is consistent with a bad solder joint if I am remembering correctly my time way back when when I was working more in the manufacturing side of electronics.

A couple tips if anyone else needs to do this would be be sure the connector looks correctly put together before you try to solder it. Be sure to use extra flux, and then clean it off good later. A fine tip soldering iron will allow more control when attaching the connectors. Again make sure the connector block looks put together correctly before you solder. When putting the guts back into the connector, if you look real close at the edge of the solder end of it, you can probably see one side is slightly duller than the other, this will be the board solder side. When inserted right it will have the small amount of the wire over the connector (I know I mentioned it above, but thought it could use repeating)

[newbie]

Question

Okay so I'm new to this. Never tried to work on electronics before, but my sons polaroid tablet has the same problem. I was able to disassemble it. Where the 5 pins connect to the board is that just white tape over them? Is it okay to lift it up? And it looks like a little bit of solder in one spot where one of the pins was, how do I remove it safely? Oh and where can I get another 5 pin connector. I have an old phone that has the same style port will that work? Thanks for any help.

[Dofoxaz]

Same problem...need wiring schematic!

I have the same problem with the power connection. Does anyone know where there might be a schematic for the wiring of the power connector? The wires are gone (given to me this way for repair). I do have some tiny wire, but not sure what goes where. I know I don't need to fill all the slots on the power adapter that connects to the mb....just need to know what wires go where and I can get it back together! Ugh! Don't mind the work, just need a wiring diagram and / or mb schematic! Any helpful links out there guys? Thanks! Did a search here on the forums but nothing popped up. Thank you!

Hi,

I need some help! My girl friend broke the micro usb / charging port off her new tablet's mother board. I have managed to get the cover off without damaging anything so far, I think. and will proceed with a re-soldering , I hope. However I do have a pressing question that really perplexes me. On one of the 2 ribbon cables that attach the screen to the mother board there was a piece of additional cellophane tape taping it down against the mother board. When I disassembled it this piece of tape untaped itself from the mother board. On it were 2 very tiny lightning bolt shaped wires, for lack of better terms. Are these needed? What do they go to. Was this a tamper proofing of some kind? Anyone know? Please enlighten someone in over his head. I don't mind a laptop but these are new territory for me. Also any advice on futher dis-assembly would be awesome! And re-soldering tips too! I warned her these are fragile connections and she was being careless and now it's a paper weight. Thank you in advanced!

Keep Smilin Bill

[sabercatpuck]

Okay so I'm new to this. Never tried to work on electronics before, but my sons polaroid tablet has the same problem. I was able to disassemble it. Where the 5 pins connect to the board is that just white tape over them? Is it okay to lift it up? And it looks like a little bit of solder in one spot where one of the pins was, how do I remove it safely? Oh and where can I get another 5 pin connector. I have an old phone that has the same style port will that work? Thanks for any help.

If I remember rght the only tape I have seen in there has ben yellow, though there is always the possibility that they had changed. You will need a fairly fine soldering iron to solder the pins back on without causing bridges between them, I would also recomend having some extra flux on hand, it will help keep the molten solder from bridging the gaps. As for a second connector, it is possible that the one from the phone would work, though no guarantees. Just depends on if the solder pads line up with the pins. To remove the old one I reccoment the exact opposite of what I just said for putting it on, in this case flood the area on the donor PCB with extra solder and use a pair of needle nose pliers to gently pull up on the connector while all of the pins are wet, then after it is loose, use the soldering iron to clean up the pins and reshape with the needle nose before trying to install in the tablet.

[sabercatpuck]

I have the same problem with the power connection. Does anyone know where there might be a schematic for the wiring of the power connector? The wires are gone (given to me this way for repair). I do have some tiny wire, but not sure what goes where. I know I don't need to fill all the slots on the power adapter that connects to the mb....just need to know what wires go where and I can get it back together! Ugh! Don't mind the work, just need a wiring diagram and / or mb schematic! Any helpful links out there guys? Thanks! Did a search here on the forums but nothing popped up. Thank you!

I remember we were able to find the schematics for the PMID701C on the FCC website some time ago, you can try to track down the thread with them. Luckily for you, since the problem that you are wondering about is the USB connector, all you really need is to know the pinout for that. It is a mini-USB plug so the pinouts are 1-VCC, 2-D-, 3-D+, 4-special, 5-GND. So the 2 most important pins for power are the outer 2.

http://pinouts.ru/Devices/mini-USB_pinout.shtml

[sabercatpuck]

Found the schematics I mentioned. They were originally posted by freaktab member PRB in this thread :

http://www.freaktab.com/showthread.php?780-Working-on-adding-another-Flash-to-the-empty-slot&highlight=schematic

Here is the direct link to the FCC site with the PMID701C schematics. Note, they probably wont be exact, but there will be similarities to this one and you might be able to track down the correct ones on the site if you look:
https://apps.fcc.gov/oetcf/eas/repor...=362818&fcc_id=

[Dofoxaz]

Where to find replacement usb port and wires

I remember we were able to find the schematics for the PMID701C on the FCC website some time ago, you can try to track down the thread with them. Luckily for you, since the problem that you are wondering about is the USB connector, all you really need is to know the pinout for that. It is a mini-USB plug so the pinouts are 1-VCC, 2-D-, 3-D+, 4-special, 5-GND. So the 2 most important pins for power are the outer 2.

http://pinouts.ru/Devices/mini-USB_pinout.shtml

Awesome! I have everything apart and not concerned about the pinout now. I cannot find a place to buy the USB connector for the MB. Any help there? My son, the tech tard opened the thing up and the lightning bolt wires fell out. He asked me to fix it, I asked for the wires...he threw them away! Is it imperative that I use these wires specifically? I HATE manuals, I get confused. I am a visual person. If I can see what you are doing, I can do it. Can I explain that away by telling you I am a lefty? Ha! I have three pictures that I took of the usb port and where it belongs on the mb. Tablets new to me! But I do get excited over a good challenge and this one is a doozie! Don't care about pinouts right now. I'm thinking it's going to be pretty straight forward. Just need the part and possibly the wires. I will try to upload the pix I have and maybe we can go from there?

[sabercatpuck]

technically any piece of wire can make the connection, but the one thing about the ones that were inside the connector before is that they are very stiff to maintain their shape after lots of insertions of the connector, where standard copper wire would not. you could try perusing local thrift stores to see if they have an old device with a plug that might work. Another option could be ****, a quick perusal found this option, you can look for others. I would recomend getting the measurements and comparing to the one you are considering if you can, but overall the outside dimensions should be fairly close I would think. One thing is it did look like some of the pads had come up. If you cant get enough solder on them to make a solid connection and hold the new connector in place you might want to put in a small amount of epoxy on each side of the connector to lock it in place better. Also if you are trying to get the data connections in the middle and are having a hard time bridging the gap, a couple strands of thin copper wire can help bridge the gap.

http://www.****.com/itm/10-x-Mini-US...ht_1804wt_1257


PS one place you might check to see if you have a Fry's electronics store near you, they have all sorts of goodies for the electronics hobbiest, and quite possibly replacement connectors.

[Dofoxaz]

Thank You!

[QUOTE=sabercatpuck;33928]technically any piece of wire can make the connection, but the one thing about the ones that were inside the connector before is that they are very stiff to maintain their shape after lots of insertions of the connector, where standard copper wire would not. you could try perusing local thrift stores to see if they have an old device with a plug that might work. Another option could be ****, a quick perusal found this option, you can look for others. I would recomend getting the measurements and comparing to the one you are considering if you can, but overall the outside dimensions should be fairly close I would think. One thing is it did look like some of the pads had come up. If you cant get enough solder on them to make a solid connection and hold the new connector in place you might want to put in a small amount of epoxy on each side of the connector to lock it in place better. Also if you are trying to get the data connections in the middle and are having a hard time bridging the gap, a couple strands of thin copper wire can help bridge the gap.

http://www.****.com/itm/10-x-Mini-US...ht_1804wt_1257


PS one place you might check to see if you have a Fry's electronics store near you, they have all sorts of goodies for the electronics hobbiest, and quite possibly replacement connectors.[/QUOTE

Great advice! After seeing the black zig zag wires your statemennt makes perfect sense. I had originally planned on replacing those with just thin copper wire, so may proceed with that plan. The easy and best route would be to just replace the MB but they cost nearly as much as an entire tablet. Junk technology when the solder won't hold. Someone should tell them their machine soldering system is broken or needs adjustments! This problem is ALL over the net. Exact same problem. I do have an email out with pix to a electronic site that carries the mini usb connector replacement parts, just need to make sure I have the correct pinout and size. It's a 5 wire usb with 5 locations for attachment to the MB (but I am not absolutely certain about #5). Need to re-check my photo for evidence of wire disconnect or breakage. Your help is SO appreciated! Maybe I can get through all of this after all! Great idea on the epoxy btw!

[tdebb]

Same problem, only with PMID10C

Had my tablet for about a month. Today, I couldn't connect to my laptop and found the miniusb broken. How do you open the case without damage? I'm assuming the case disassembly of a 10C would be similar to a 702C.

Thanks

[sabercatpuck]

It has been awhile but if I remember right you remove the four screws on the side and then insert some kind of plastic pry tool on the face side and work it around until the back shell popps off. you can use a metal screwdriver but that will mar the finish. i find a plastic knife can work if you file a better edge on it.

[tdebb]

Thanks anyway Sabercatpuck

It has been awhile but if I remember right you remove the four screws on the side and then insert some kind of plastic pry tool on the face side and work it around until the back shell popps off. you can use a metal screwdriver but that will mar the finish. i find a plastic knife can work if you file a better edge on it.

I don't see any screws on the sides. I guess the 702c and the 10c aren't as similar as I had hoped Thanks anyway.

[HÆDES]

lcd broken

Can any body help me replace the lcd i already have the replacement screen.