Database Develop

External GSM antenna damaged

Ok so I'm stupid.
Whilst trying to boost 3g reception and having plugged an external antenna into my gsm external port (the one on the left). I have damaged my kaiser. Now when I remove the external antenna the internal antenna no longer works. I get no reception whatsoever.
I presume there is some sort of physical switch in the port which has been damaged by plugging in the external antenna.
Do any of you guys know about this and if it can be fixed (say by soldering the port)? Any help (other than insisting that the phone will just have to be replaced) appreciated.

bump up - please help

Not a total loss
Looking at pg 92 of the Kaiser service manual, I see there is just the earth connection on the pcb either side of the connector and a single track down the middle so I cant see how there would be an isolator switch built in. Theres nothing about using the RF connector in the user manual (only the GPS connector) and plugging in an external RF antenna, as well as requiring the correct part (and I don't know if this connector is for an antenna or just testing purposes), would require removal of the battery cover. I think you may have damaged the RF circuitry/receiver. Have you tried removing the battery for a few minutes, attempting to power up the device (to remove any residual charge), performing a hard reset and trying again in different locations (assuming you haven't changed anything since it was last working fine)?
I don't think the phone would need to be replaced but it may require some components to be replaced by a service centre that knows the device well if none of the above makes any difference.

Flying Kiwi said:
Looking at pg 92 of the Kaiser service manual, I see there is just the earth connection on the pcb either side of the connector and a single track down the middle so I cant see how there would be an isolator switch built in. Theres nothing about using the RF connector in the user manual (only the GPS connector) and plugging in an external RF antenna, as well as requiring the correct part (and I don't know if this connector is for an antenna or just testing purposes), would require removal of the battery cover. I think you may have damaged the RF circuitry/receiver. Have you tried removing the battery for a few minutes, attempting to power up the device (to remove any residual charge), performing a hard reset and trying again in different locations (assuming you haven't changed anything since it was last working fine)?
I don't think the phone would need to be replaced but it may require some components to be replaced by a service centre that knows the device well if none of the above makes any difference.
Click to expand...
Click to collapse
Thanks for your comments. I have removed the battery but I have not tried a hard reset. I'm out in africa at the moment and can't deal with the other problems this would cause.
Right now I have temporarily fixed it by bending a paper clip and putting it in the port with the rest fitting snug under the cover. The reception is surprisingly good.

If the temporary fix works....
knmwt15000 said:
Right now I have temporarily fixed it by bending a paper clip and putting it in the port with the rest fitting snug under the cover. The reception is surprisingly good.
Click to expand...
Click to collapse
Sounds like the mark one 'coathanger car aerial' that was popular in New Zealand many years ago

Replacing a Part for the G1

I bought this G1 with a cracked screen and I decided to replace the screen, however when I removed a certain part in the phone I managed to rip a ribbon cable. I searched for a replacement part and found out that it will cost about $185 to replace it. Now I am about to buy this other G1 for $50 that had water damage that I will be using for parts. But before I buy it, is there a way I can see whats wrong with it using adb? I'm interested in whether the part that I need is in working condition.
the phones condition is:
-the screen does not show anything but a backlight
-leds work
-rebooting using three buttons work
-lcd is probably screwed up because when i hit the power button i see part of the home background and then it fades away.
-no g1 screen logo while rebooting
-normally vibrates once while rebooting
-android os boots up
-"adb kill-server adb devices" doesn't list me any devices when i hook it up to usb. maybe debugging is turned off.
here is a link to the part i am about to remove
http://www.cellphone-repair-shop.co...icrophone-and-sd-card-slot_50H10000-02M-A.htm
the pcb board has the trackball, usb port, simcard slot, sdcard slot, and various other peripherals.

sensimila said:
I bought this G1 with a cracked screen and I decided to replace the screen, however when I removed a certain part in the phone I managed to rip a ribbon cable. I searched for a replacement part and found out that it will cost about $185 to replace it. Now I am about to buy this other G1 for $50 that had water damage that I will be using for parts. But before I buy it, is there a way I can see whats wrong with it using adb? I'm interested in whether the part that I need is in working condition.
the phones condition is:
-the screen does not show anything but a backlight
-leds work
-rebooting using three buttons work
-lcd is probably screwed up because when i hit the power button i see part of the home background and then it fades away.
-no g1 screen logo while rebooting
-normally vibrates once while rebooting
-android os boots up
-"adb kill-server adb devices" doesn't list me any devices when i hook it up to usb. maybe debugging is turned off.
here is a link to the part i am about to remove
http://www.cellphone-repair-shop.co...icrophone-and-sd-card-slot_50H10000-02M-A.htm
the pcb board has the trackball, usb port, simcard slot, sdcard slot, and various other peripherals.
Click to expand...
Click to collapse
you ARE SO FUNNY!!!

Why? can I laugh too?

I don't see you turning a profit considering u can buy one for $200 on craigslist easy

its funny cuz its like you trying to buy a coumputer without a mother board. this is the main thing in the g1 it would be cheaper to buy the phone brand new

i have two, one of them needs this part and the other one has the part i need. and plus im fixing it for my brother.
G1 #1
-already Bought for $74
-needs pcb board
G1 #2
-$50 as is
-has pcb board
-has water damage
anyhow I managed to get into recovery and did a wipe logged in but once the screen turns off i cant turn it on anymore. would you say it is safe to exchange these parts?

Wrong Forum, goodness

how is it wrong..I'm not asking anybody to take it apart and do it for me. if it was in the wrong place would it be because I'm not developing something for someone to use. is there a section for modding, taking apart the g1 and internals. if i could develop something i would. i guess there's no help in posting useless remarks because that doesn't contribute to nothing. If this so happens to be in the wrong forum well then this is my first mod now isn't it? and since you went of of your way to tell me its the wrong place why don't you be helpful to lead your fellow xda forum member. ok.

accessory forum This seems to strictly be about discussing the SOFTWARE for the Dream. Accessory forum covers mods and replacements (to my knowledge)

$50 for a water damaged G1? WTF? Are you serious?

miketaylor00 said:
$50 for a water damaged G1? WTF? Are you serious?
Click to expand...
Click to collapse
do you mean by that as expensive or cheap???

prince.siraj said:
do you mean by that as expensive or cheap???
Click to expand...
Click to collapse
I'd say expensive, as you have no idea the extent of the water damage. If the phone was on while dropped into the water, the mainboard is likely dead. Buying it would be a waste.
Also, this forum is for software development. Moving this thread. Thanks!

hey thanks for moving my thread. as i reread my post it seems more of a question than a developmental thread.
further testing
i booted up
ran through all of the radios wifi, 2g, 3g, orientation sensor, made a call and they all seem to work fine. the one problem with this phone is that if i turn off the screen it won't turn back on.i think that maybe the pcb board might be salvageable. would that be worth doing?

What cable was it that you ripped? What was it connecting? And is it possible for you to take pictures?

my digi cam isnt working but this will do. its like a 1/8" rip on the side of the ribbon i was thinking about repairing but i cant because the ribbon is soldered to the board. i figure that i should try swapping it out, what could possibly go wrong? im assuming that the lcd has lost the ability to regain power after turning off from the water. and maybe...possibly the main pcb has dried up and not been damaged considering most things work fine. thanks for sticking around.

I'm not liking your chances of getting this working, but fwiw here's the service manual:
http://mikechannon.net/PDF Manuals/HTC Dream SM (A04).pdf

Thanks I already have that manual printed out. Took it all apart like4 or 5 times. its pretty easy to do. I'll be starting operation on it tonight.

[Q] G1 motherboard fault causing dead touchscreen

I have been trying to repair this phone, but the usual faults have not turned out to be the problem. This is the background on the repair efforts:
In my research I found 3 main causes for a dead touch screen.
1) Corruption of system software.
2) Failure of digitizer cable (hinge FPC)
3) Failure of digitizer screen (touch panel)
To check for #1, I flashed the firmware again (after a wipe). I downgraded to Android 1.5 because I wanted to root the phone and install CyanogenMod Android 2.2 Froyo.
This was a big mistake because I learned that when you don't have a working touch screen, you cannot get past the "Touch the Android to Start" screen.
So on to step 2 - replace cable (hinge FPC). I have a G1 parts phone that was lightly used in good condition before it was damaged. There was no damage to the sliding section, so I expected the hinge FPC to be in good condition.
So I installed the hinge assembly with its hinge FPC from the parts phone, but this did not work either.
So next I installed a new touch panel (digitizer screen), but that did not fix the problem either.
I had a chance to borrow a working G1 motherboard, and I was surprised to see that the phone was working with the borrowed motherboard.
So my question is whether my problem motherboard can be recovered with a software solution, or if these symptoms indicate a hardware failure.
I thought that a wipe followed by firmware flash would eliminate all soft system errors, but I am not sure if the wipe and flash really erase absolutely everything, or if there is something else I need to do to get it working again.
Thanks.

more than likly it was the point in the motherboard where the flex cable connects. try using some electronic parts cleaner.
i have ran into this a few times and simply replacing the motherboard has only helped a twice, when i cleaned it up it worked.

That sounds reasonable. I still have some Tweek. I'll give that a try. It worked with the same kinds of problems on computer sockets.

Okay. You are on the right track. When I went back to the phone, I actually got two taps out of the screen, which it hasn't done in a long, long time. (I was running keyboard only for a long time before I could take it down to fix it.) I attribute that to just disturbing the contacts with so many assembly/disassembly efforts.
After I applied Tweek to the joints, it ran well.... for about an hour. Trying again was no luck, so I don't think I'm going to mess with the contacts anymore. By the time you figure how infrequently motherboards come up for sale and the cost, I think I'd do just as well with a trade in on a flat-rate repair.
But at least now we know for the record that there is another cause of dead touch screens.

well i have about 13 motherboards, if your interested let me know

Thanks. What has been your experience with changing motherboards?
The reason I ask is because the service manual wants the phone to be tuned again after a motherboard swap. I see a lot of people changing motherboards, and I can't believe that is much of a problem when you don't see anyone complaining about the phone not working well afterwards.
A spare motherboard might be a good idea for a diagnostic tool. It would have saved me a lot of work changing the touch panel and cables if I would have had a motherboard to try first.
I thought I had a good spare in a damaged phone, but when I took it out the other day to test this phone, I found out it had physical damage too. The SIM holder and RF shielding were dented, but the killer was that the daughterboard cable connector was bent.
I suppose back when the phones were $900 you might try to fix something like that, but it's hard enough to do a connector swap on a computer motherboard. I can't imagine that even the factory has the equipment to properly swap the connector even if you can get the part.
How much do you want for a motherboard? On that famous auction site I've seen them go for around $10 to $30. I could kick myself for not buying the last one I saw at $7 because I thought I had a spare.

[Q] the wifi HARDWARE problem fix?

Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works

Judging by your description, it might be that the WiFi/BT chip isn't attached well - some of the balls in the BGA (Ball Grid Array, look it up) have cracks that prevent proper contact.
If this is indeed the case, it can be fixed by reflowing or just directed heating of the chip area to the melting temperature of the soldering alloy.
However, this might not be the problem - and if it isn't, there might be a host of reasons for it.
You need to correlate the location of the WiFi/BT chip and the pressure you're applying.

Jack_R1 said:
Judging by your description, it might be that the WiFi/BT chip isn't attached well - some of the balls in the BGA (Ball Grid Array, look it up) have cracks that prevent proper contact.
If this is indeed the case, it can be fixed by reflowing or just directed heating of the chip area to the melting temperature of the soldering alloy.
However, this might not be the problem - and if it isn't, there might be a host of reasons for it.
You need to correlate the location of the WiFi/BT chip and the pressure you're applying.
Click to expand...
Click to collapse
wow thank you, i looke it up it should be simple
could you tell me what is the bridging he talked about ?

He might be suspecting something else.

synos_x said:
Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works
Click to expand...
Click to collapse
I have fixed my WiFi but bluetooth is still dead.
The WiFi problem is actually a poor connection between two boards inside the phone. There's two boards that need to make contact but because they aren't hard-wired together they rely on a touch contact. There's a shiny foil square on top board (main pcb) that has to contact conductive square on lower board. The shiny foil square looks like it gets compressed over time which is why the wifi only fails on some phones after a while. Some phones will be fine but I think it's just poor engineering to rely on a soft touch contact!!
When you push in the back against the mic you are pushing the boards together to make contact.
I fixed by placing some of the screen adhesive (which I had plenty of after removing screen) underneath the spacer pad that is under the bottom board. This forces the boards together and keeps the WiFi going.
However, I thought this would fix bluetooth but no such luck. Perhaps there's another connection that's not right somewhere?

so i sent it to a repair center sony told me the board is fried, i dont know what this means , everything works except for wifi bluetooth, they are both working until now, i think they heated the wifi part on the board

Silverdace said:
I have fixed my WiFi but bluetooth is still dead.
The WiFi problem is actually a poor connection between two boards inside the phone. There's two boards that need to make contact but because they aren't hard-wired together they rely on a touch contact. There's a shiny foil square on top board (main pcb) that has to contact conductive square on lower board. The shiny foil square looks like it gets compressed over time which is why the wifi only fails on some phones after a while. Some phones will be fine but I think it's just poor engineering to rely on a soft touch contact!!
When you push in the back against the mic you are pushing the boards together to make contact.
I fixed by placing some of the screen adhesive (which I had plenty of after removing screen) underneath the spacer pad that is under the bottom board. This forces the boards together and keeps the WiFi going.
However, I thought this would fix bluetooth but no such luck. Perhaps there's another connection that's not right somewhere?
Click to expand...
Click to collapse
Hi,
Can you please let me know that how did you open that phone? did you opened it by your self?
Is it possible to open from back side only?
Do you have pictures for wifi solution which you described above?

nikunjnandaniya said:
Hi,
Can you please let me know that how did you open that phone? did you opened it by your self?
Is it possible to open from back side only?
Do you have pictures for wifi solution which you described above?
Click to expand...
Click to collapse
Hi sorry but don't have phone any more. Don't think I have pictures any more either.
You cannot open from back side only. You have to take off screen. Look on youtube to see how it's done.

Silverdace said:
Hi sorry but don't have phone any more. Don't think I have pictures any more either.
You cannot open from back side only. You have to take off screen. Look on youtube to see how it's done.
Click to expand...
Click to collapse
Hi,
Thanks for your reply. Currently i had press with pressure back side and it's working for me.
But let say if i open phone as shown in youtube then do i need anything extra to assemble my phone again?
Thanks that you have write your wifi issue here and it will help others.

nikunjnandaniya said:
Hi,
Thanks for your reply. Currently i had press with pressure back side and it's working for me.
But let say if i open phone as shown in youtube then do i need anything extra to assemble my phone again?
Thanks that you have write your wifi issue here and it will help others.
Click to expand...
Click to collapse
Yes, you'll need the screen adhesive stuff. Can find on eBay or Aliexpress or Witrigs etc.

synos_x said:
Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works
Click to expand...
Click to collapse
old thread but just in case some zr user are still searching for an answer
there is a chip on main pcb which controls wifi and bluetooth, but sony didn't soldered it correctly and thus it needs pressure to make connections with pcb.
Only permanent solution is to apply heat on that chip ( after disassembling pcb from phone ) and then it will work for forever.
My phone's ( zr ) wifi bluetooth and nfc wasn't working, so i dissembled it and took the pcb to a laptop repair shop and told them to apply heat on that chip to solder it correctly ( as i don't have that instrument which is used to apply heat on small point ), and after that it is working without any issue. :highfive:
Note:- be carefull while removing screen as it is very fragile and will brake easily if not handled correctly ( yes i broke my screen and using an after market now which costed me Rs1800 ( for full folder ), i was lucky to still find its screen .

Saw Sooper diff DDI dijauhkan I'd do so

Phone burst into flames during repair, need advice with new parts.

So, the screen on my Note 4X broke, and I wanted to replace it. Long story short, the battery is glued down hard as **** and I managed to damage it, and it burst into flames. I'm fine, I was prepared, nothing but the phone suffered any damage.
But now I'm sitting here, with a phone that's basically still fine minus the frame and the battery, and I still want to repair it.
I'm faced with two questions, first of all, I managed to find (I think) every part I need, but one eludes me. I don't even know what it's for. You can see it here (minute 9:11-9:27):
https://youtu.be/MQazwoEssN0?t=556
It says "C6_LEDFPC_V1.0" on mine. Google tells me nothing about that, and it's not a part I have seen on the repair shop sites. It doesn't even seem to be present on complete frame+display assemblies like this one:
https://www.aliexpress.com/item/LCD...edmi-Note-4X-hongmi-Red-Rise/32810566637.html
And apart from that, I wonder if I missed any part.
I still have:
A new display+digitizer, the back cover, the mainboard with the SoC and the two cameras, the PCB with the charging board, the battery cable, the sim tray, the fingerprint reader, the loudspeaker.
I need:
A new frame, an earpiece, the mainboard flex cable, the side key flex cable, a battery, and the one mysterious piece.
Is that everything? Does everyone has a basic list of all the parts?

anon768 said:
So, the screen on my Note 4X broke, and I wanted to replace it. Long story short, the battery is glued down hard as **** and I managed to damage it, and it burst into flames. I'm fine, I was prepared, nothing but the phone suffered any damage.
But now I'm sitting here, with a phone that's basically still fine minus the frame and the battery, and I still want to repair it.
I'm faced with two questions, first of all, I managed to find (I think) every part I need, but one eludes me. I don't even know what it's for. You can see it here (minute 9:11-9:27):
https://youtu.be/MQazwoEssN0?t=556
It says "C6_LEDFPC_V1.0" on mine. Google tells me nothing about that, and it's not a part I have seen on the repair shop sites. It doesn't even seem to be present on complete frame+display assemblies like this one:
https://www.aliexpress.com/item/LCD...edmi-Note-4X-hongmi-Red-Rise/32810566637.html
And apart from that, I wonder if I missed any part.
I still have:
A new display+digitizer, the back cover, the mainboard with the SoC and the two cameras, the PCB with the charging board, the battery cable, the sim tray, the fingerprint reader, the loudspeaker.
I need:
A new frame, an earpiece, the mainboard flex cable, the side key flex cable, a battery, and the one mysterious piece.
Is that everything? Does everyone has a basic list of all the parts?
Click to expand...
Click to collapse
I've been thinking that in the video, the guy switched on the phone without that part. so that part shouldn't be a very major component. In my opinion, it can be some sort of sensor. I personally feel its a magnet screen sensor for covers with smart wake up function.
The reason I say this is because when i touch a small magnet on the entire front panel, It gets stuck on that same point.
However I am not very sure as the smart wake is not triggered. Maybe it is because I am on LineageOS.
Hope It turns out helpful.

You will probably need the vibrator motor too, its quite small and easy to lose as I've found.
one like this:
link

That part is the LED for the capacitive buttons. Not important at all if you cant find it