D500 Keypad problem

[dagger_meerkat]

Liquid damaged d500, cleaned it up and dried it. However, none of the keys work apart from the power button which switches the phone on but won't switch it off. Does anyone know what can be done to get all the keys working again?

[khan786]

yep replace the flex cable from main board to sub board, guarantee to fix problem ;)

[dagger_meerkat]

nope, no luck, thanks for the reply tho! :)

I am thinking that I might have to remove a few diodes/resistors from the keypad but I don't know which ones? :confused:

[spectrum]

Get the Service Manual
The solution is all there

[jnjshop]

where v can find service manual

[tan2x81]

i have...give me your email and i sent it to you.. oki.. :D

[GSMARMOON]

:) iguessREMOVE A FEW DIODES+RESISTORS FROM KEYPAD.iamnotsure :confused:

[GSMARMOON]

useFOR UR INFORMATION. :) :)

[mohammed]

hi
thanks alot for that

i think can work in most case, its LIKE protection for over voltage to system

good info
thanks

[jnjshop]

tan2x81
thank 4 ur kindly,my email:kai_jnjshop@hotmail.com
my phone work now ,only reconnect lcd connecter it ok.

[MBtech]

Get the Service Manual
The solution is all there
where v can find service manual
It's here : http://dl1.rapidshare.de/files/895043/30317229/SGH-D500-ServiceManual.rar
Good luck.

[Mansoor]

It's here : http://dl1.rapidshare.de/files/895043/30317229/SGH-D500-ServiceManual.rar
Good luck.
link is dead give another link

[ssatcom]

link is dead give another link

Link working u need to go down, Select FREE Download , Please wait 60 seconds.

[aaneel]

That circuit is not a D500,Please help when incomming the phone is hang D500 but only veb, mode Thank You

[MBtech]

hehehe, yes it's true the pic uploaded by GSMARMOoN is about X460 key problem not D500, and not work.

[Foneshack]

sorry if i sound really stupid here but if i remove the resistors do i have to replace them? if not why?

[denche]

where is located varistors in D500? in x460 i found it, but D500 varistors not like as X460 .... help

[geoffcooll]

i have...give me your email and i sent it to you.. oki.. :D


can u send me a service manual also

thank u

bashstud@hotmail.co.uk

[asad143]

hi
any body tell me which is flex cable plz.send any photo plz or attachment.


asad uk

[Foneshack]

there is only 1 flex in a d500. take the back cover off and you will see it attached to pcb board

[Ddavez]

where is located varistors in D500? in x460 i found it, but D500 varistors not like as X460 .... help

I'm stuck here too. Anyone got the pictures for varisitors to remove from D500 PCB to make keypad work after liquid damage?
Cheers
Ddavez

[wearephones]

hi
the varistors are located on the keypad side on the right of the ribbon connector.

[Albarracin]

@wearephones

Is possible send photo?

1000 Thx

Best Regards

[Ddavez]

hi
the varistors are located on the keypad side on the right of the ribbon connector.

Picture would be great if possible ??

Thanks again

[smr29126]

also check side keys when you close phone check anyone key is not pushed permanently.

For diodes you can find them by yourselt check components small like capicitors and its one end will be grounded and other will be connected to keys tracks.
find one and match it to other and remove all like that simple way i think you can done this job.

[silveraxe]

Please becareful to remove only one by one and REMEMBER which one went where, cos if u remove the wrong component the phone will not power on!
and you will be sitting with a dead handset if u dont know where to replace it or lost it.
wbr :)

[Ddavez]

Thanks I'll try that. Is there any specific way to test which one(s) are faulty or is it a matter of buzzing them out, remove them and see if that works??

Cheers

[silveraxe]

trial and error :)_

wbr

[sonumobilewala]

useFOR UR INFORMATION. :) :)
dear bro this is x480 but i need d500 keypad sollution

[Pterachean]

Make sure that there is no corrosion on these areas:
under sub pcb and main pcb keypad membranes
on flex connectors on sub pcb and main pcb
on varistors on sub pcb and main pcb
on microphone
on side buttons
on flex

If you can, check with 20x zoom microscope.

[multisystem]

Liquid damaged d500, cleaned it up and dried it. However, none of the keys work apart from the power button which switches the phone on but won't switch it off. Does anyone know what can be done to get all the keys working again?

Check side butten... some side button short or pressed...Tested by multisystem.........

[mizancoxr]

useFOR UR INFORMATION. :) :)




brother it is not D500 circuit. please post the correct.

[girumm]

hello i am wating for d500

[Rizwan ch08]

verry nice sir ..........................

[eriksson22]

go to www.yupiteri.com for your d500 keypad solution....that was where i got mine.