When taking it apart capacitor in picture broke off, is there way to fix it or i need new motherboard?
I think you can fix it with some very precise welding (which I know little about). I would recommend going to a GSM repair shop and asking them to do it. If they tell you you need a new motherboard, insist on the weld.
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Hi
I need to repair my qtek 2020i. The connector for the charger is "broken" as the metallic cover that fix it to the mainboard (now the connector is completely detached). I have disassembled it following the guide, but the metallic cover is to ruined cause of mine trying to repair it.
Someone knows if is possible to order only those parts.
I will attach some photo so you can understand my bad explanation (I need the parts in the red circle- the first two photos)
qtek photos
this part needs a special soldering iron.not easy to do..id buy a replacement board of ebay
Images was too blur to see but I also do think ebay is the best place to find it...
In the middle of disassembling my Legend to replace a bad digitizer, I broke the ribbon cable connecting the power button to the PCB. I haven't reassembled it yet, but I can't see how it's going to work.
img710.imageshack.us/img710/6929/brokenn.jpg
img137.imageshack.us/img137/1346/powerkz.jpg
(Sorry I can't post links because of post count.)
If anyone knows what the best way to repair this would be, I would be most appreciative. Thank you.
EDIT:
It seems this is the piece I need to replace.
tinyurl.com/28a7t9u
tinyurl.com/36yj5tw
Anyone know where I could go about finding one of these? The part number turns up nothing on Google.
I would find a service center and ask there, or I would solder it , it's just two wires....
But be sure you purchase a part with the ribbon cable on it, what I've seen it didn't look like it was there...
Good luck...
Called HTC service center. Unfortunately they don't sell parts direct.
I thought about soldering it, however the ribbon broke so close to the base that I am not sure I would be able to get access to the conductor.
Anyone have a trashed Legend that I could buy for parts?
Hello everyone, my hd2 after a fall the screen has turned white but the phone seems to work because 'receives calls.
I tried to put it into bootloader but it always remains white.
With the replacement of Dispay you think I can solve the problem?
Thanks to all
the white screen usually means that the ..screen is not working at all. What you see are the led's that make up the backlight. The LCD panel is not polarizing this light in any way. This is because either the motherboard doesn't supply the proper signals or the display unit (LCM) is not able to process them.
Both this scenarios can happen when you drop the phone. Simply put, you may change the display and still have this problem (if it is motherboard related). At motherboard level, since the qualcomm snapdragon chip is the one that also does video processing, a failure in displaying something on the screen could mean that the chip itself either got damaged or some of it's soldering points to the PCB were broken. This is a end-game scenario.
What you really need to do, is to check out the board with another display in either a service center or whatever place you can borrow one before you actually buy it.
Thank you for your answer, but try a screen before you replace it is impossible for me, I'm forced to buy it, ****!
It would be a risk to heat the solder joints with a micro gas lamp as for the chipset of some laptops?
Or is there another system?
Thank you
Orx
Sell your phone and by a new use one... by the time you figure out what's wrong, you put in just as much as it would be to by a new use one
Sent from my HTC HD2 using XDA App
solved
before selling the cell I had to understand the problem!
I solved the problem, was the logic board connector did not close the flat cable of the display. All this caused by bad positioning of the protective mylar
Thanks to all
Im trying to replace the digitiser on my HD2, i purchased the digitiser only and not the screen itself as it is working fine (or was!).
To get it apart i had to snap the connector off which now means i need to solder it back on.
Anyone have any suggestions as to how i go about doing this. Is a big dollop of solder over the entire thing ok, or does each of the 7 connections need to be soldered, very precisely, individually?
Alternatively, can i get away with glueing them down or something?
Next, and related problem is that when it fires up at the moment the screen is bright at the bottom but darker at the top. Soemthing to do with the backlight i guess, but anyone know how to rectify that? Or should i just go and buy the screen + digitiser?
should of been dismantled with solder iron & needs resoldering precisely.
I would suspect further damage could be evident by backlight issue.
Possibly, though when removing the screen i did mess a bit with the screen and the various mirrors and things, so figured that might have hurt it.
Anyway its now at a repair shop because im not that precise-a-solderer, see if they can fix it (or rather, how much for) and if its too pricey il have to find me a screen/digitiser combo
By any chance somebody could help me with obtaining Defy+ (MB526) mother board? Mine drown via speak grille recently The phone itself works but since water passed via speak grille, area where proximity sensor and LEDs is wasted with all its resistors(?) making screen backlight and sensor not working while both are actually O.K. I know this because it used to work when I opened phone and wiped all from stain etc. but seems that while I was wiping it, I touched burnt resistors and they crashed disconnecting certain leads making screen and sensor not working again.
By now I end up with options either to purchase a new phone (really sucks theme — I want Nexus4 then and it is out of stock for long time), get a new motherboard (next to impossible to find thus I made this post) or look for someone who could help me to restore resistors on existing mother board (but not sure which are used there).
Hope someone could help me to solve this problem; would really appreciate any help.
You could try looking on eBay, where you can probably find a broken "for parts or not working" MB526 for less than US $100 and then harvest the parts you need from it. Often broken phones just have a cracked display or a bad battery (but be sure to check details in the listing).
I'm not sure if I understood your post completely. If you are sure that you broke components, then you will need to find a circuit schematic for your phone to identify what the broken components are. There appear to be capacitors, inductors, and possibly resistors in the marked area of your picture. It is impossible to tell their exact values from just a picture. You will need to order replacement parts and solder them in the phone. I don't know where to get a repair schematic for this phone.
If the components are undamaged in the marked area, you can try to clean the corrosion / crusted deposits there with isopropyl alcohol or ethanol and a cotton swab (be sure to disconnect the battery while doing this). Often, components will be undamaged by water getting in a phone, but it will cause corrosion that short circuits between components and causes malfunction. Cleaning the affected area may fix this.