K500 mic. not work - GSM-Forum

stigor · 04-17-2005, 19:19

Changed mic from working phone to not working, but, not work. Solder wires from board to mic, again, not working. What to do? Anybody have suggestion
which lines to check for microphone or what to shortcut? HLP.

flechazo · 04-17-2005, 22:43

So u need have service manual sorry but i don't have It

ReGards .. El Paro.com

stigor · 04-18-2005, 06:50

Anybody, suggestion, scheme etc?

MADCIRA · 04-18-2005, 08:41

Look crystal IC near mic contacts,rehot or change him!
B.R. from Kikinda

asifch111 · 04-18-2005, 19:41

HI
MY K508i without switch off i take out bettery after wen i on he just (flsh light) dosnot switch on pppppppppeleseee help???

stigor · 04-19-2005, 16:34

Quote:

Originally Posted by MADCIRA

Look crystal IC near mic contacts,rehot or change him!
B.R. from Kikinda

Look at picture. Did you mean on IC with red circle or blue, or both?

brane_obrad · 04-20-2005, 07:55

for mic is a blu circle look here
post the results
best regards

vule · 05-05-2005, 09:32

What is value of resistor soldered to white wire on last picture??? It seems that is mic BIAS and it won't work without it...

Best regards

Vule

opo · 05-08-2005, 23:36

yes...there is something there, but can u be more explicit pls??? like is that resistor or L???and u solder the two capacitor togheter and the 3-rd capacitor to cristal IC....Is that all???
I have taken cristal ic from T230 but don't work for me. I have made the white wire conection, and there i have sound but very lo, and i have interference on the signal. If i take down cristal ic and make all the other conections i have just interference but no sound?µ...Regards

jusluke · 05-09-2005, 00:32

Quote:

Originally Posted by opo

yes...there is something there, but can u be more explicit pls??? like is that resistor or L???and u solder the two capacitor togheter and the 3-rd capacitor to cristal IC....Is that all???
I have taken cristal ic from T230 but don't work for me. I have made the white wire conection, and there i have sound but very lo, and i have interference on the signal. If i take down cristal ic and make all the other conections i have just interference but no sound?µ...Regards

crystal from t230 not work also tried that. the jumper schema looks complicated but can be done(BTW have anyone tested this?). if you have same crystal from dead k7 would be perfect, WBR

opo · 05-09-2005, 00:48

Normal should be same ic...T230 is same on t39, t68, t610, t630, and i think also Siemens phones c62 and CF62. This is my experience. Problem is not just cristal ic. Cristal IC broke for a reason. By changing IC reason steel same...so must find why cristal brake.... I also think that cristal can be replace by wires. Some friend told me that it is electrostatic charge protection.... so if yes it act as a multi-fuse ...
Comic thing is that i have write now two F500i(same thing as k500) that have mic problem, bought cristal IC broken....on one have use t230 cristal in other p900...and nothing

vule · 05-09-2005, 14:44

Tested, not working.... No mic sound at all... Looks like bias is missing...

Any other solution???

Br

Vule

opo · 05-10-2005, 09:22

After changing that cristal ic i have done full reflash...but same problem-so this is not soft at all....(at least my case...)

bestman · 05-11-2005, 19:23

Quote:

Originally Posted by MADCIRA

Look crystal IC near mic contacts, rehot or change him!
B.R. from Kikinda

1.re- heat this ic's near the mic position.
2. re-set your phone .
3.flash your phone , if did not obey .
4.re-coupling your phone is very important.
5.clean mic interface before replacing another .
6.check your charging port for brigding .

bestman

MADCIRA · 05-12-2005, 09:28

I have one K700 with broken crystal IC and I try every solution but nothing,now I wait new IC and THAT IS ONLY SOLUTION!!!
AM I WRONG???

MADCIRA

04-17-2005, 19:19	#1 (permalink)
stigor No Life Poster Join Date: Feb 2002 Location: Serbia Posts: 878 Member: 9165 Status: Offline Thanks Meter: 0	K500 mic. not work Changed mic from working phone to not working, but, not work. Solder wires from board to mic, again, not working. What to do? Anybody have suggestion which lines to check for microphone or what to shortcut? HLP.

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04-17-2005, 22:43	#2 (permalink)
flechazo Registered User Join Date: Sep 2003 Location: Marruecos Age: 44 Posts: 2,400 Member: 39250 Status: Offline Thanks Meter: 64	So u need have service manual sorry but i don't have It ReGards .. El Paro.com

04-18-2005, 06:50	#3 (permalink)
stigor No Life Poster Join Date: Feb 2002 Location: Serbia Posts: 878 Member: 9165 Status: Offline Thanks Meter: 0	Anybody, suggestion, scheme etc?

04-18-2005, 08:41	#4 (permalink)
MADCIRA Freak Poster Join Date: May 2004 Location: Proud Serbia Posts: 402 Member: 65352 Status: Offline Thanks Meter: 118	Look crystal IC near mic contacts,rehot or change him! B.R. from Kikinda

04-18-2005, 19:41	#5 (permalink)
asifch111 Junior Member Join Date: Mar 2005 Age: 56 Posts: 6 Member: 126312 Status: Offline Thanks Meter: 5	HI MY K508i without switch off i take out bettery after wen i on he just (flsh light) dosnot switch on pppppppppeleseee help???

05-05-2005, 09:32	#8 (permalink)
vule No Life Poster Join Date: Apr 2002 Location: Radiometer Medical ApSBrønshøj Age: 51 Posts: 721 Member: 10854 Status: Offline Sonork: 1578988 Thanks Meter: 3	What is value of resistor soldered to white wire on last picture??? It seems that is mic BIAS and it won't work without it... Best regards Vule

05-08-2005, 23:36	#9 (permalink)
opo No Life Poster Join Date: Oct 2002 Location: Shenzhen China Age: 68 Posts: 1,074 Member: 16350 Status: Offline Sonork: 110823 Thanks Meter: 42	yes...there is something there, but can u be more explicit pls??? like is that resistor or L???and u solder the two capacitor togheter and the 3-rd capacitor to cristal IC....Is that all??? I have taken cristal ic from T230 but don't work for me. I have made the white wire conection, and there i have sound but very lo, and i have interference on the signal. If i take down cristal ic and make all the other conections i have just interference but no sound?µ...Regards

05-09-2005, 00:48	#11 (permalink)
opo No Life Poster Join Date: Oct 2002 Location: Shenzhen China Age: 68 Posts: 1,074 Member: 16350 Status: Offline Sonork: 110823 Thanks Meter: 42	Normal should be same ic...T230 is same on t39, t68, t610, t630, and i think also Siemens phones c62 and CF62. This is my experience. Problem is not just cristal ic. Cristal IC broke for a reason. By changing IC reason steel same...so must find why cristal brake.... I also think that cristal can be replace by wires. Some friend told me that it is electrostatic charge protection.... so if yes it act as a multi-fuse ... Comic thing is that i have write now two F500i(same thing as k500) that have mic problem, bought cristal IC broken....on one have use t230 cristal in other p900...and nothing

05-09-2005, 14:44	#12 (permalink)
vule No Life Poster Join Date: Apr 2002 Location: Radiometer Medical ApSBrønshøj Age: 51 Posts: 721 Member: 10854 Status: Offline Sonork: 1578988 Thanks Meter: 3	Tested, not working.... No mic sound at all... Looks like bias is missing... Any other solution??? Br Vule

05-10-2005, 09:22	#13 (permalink)
opo No Life Poster Join Date: Oct 2002 Location: Shenzhen China Age: 68 Posts: 1,074 Member: 16350 Status: Offline Sonork: 110823 Thanks Meter: 42	After changing that cristal ic i have done full reflash...but same problem-so this is not soft at all....(at least my case...)

05-12-2005, 09:28	#15 (permalink)
MADCIRA Freak Poster Join Date: May 2004 Location: Proud Serbia Posts: 402 Member: 65352 Status: Offline Thanks Meter: 118	I have one K700 with broken crystal IC and I try every solution but nothing,now I wait new IC and THAT IS ONLY SOLUTION!!! AM I WRONG??? MADCIRA