Need help with TP- First time at carrying out TP - GSM-Forum

shahzad9 · 04-03-2006, 22:28

I am trying to imei patch w550i and have found the tp but can't seem to sucsessfuly ground it.

I am wearing rubber soled ***** and i manually handle and use a needle to ground tp but no sucsess????????

Any help will be aprechiated.........its my first attempt at testpoint

James-R · 04-03-2006, 22:38

"I am wear rubber soled *****"

are you for real??? try putting your other finger in the ground pin of your mains socket, that may work!

br

agent003 · 04-03-2006, 22:43

.... I hope he dont live in my area..... otherwise we are going to have a power cut

BR

shahzad9 · 04-03-2006, 23:09

Quote:

Originally Posted by James-R

"I am wear rubber soled *****"

are you for real??? try putting your other finger in the ground pin of your mains socket, that may work!

br

the rubber sole thing was a joke........but i seriously need help with carrying out tp

James-R · 04-03-2006, 23:15

the easiest way to do all testpoints, motorolas,ericssons etc is to use a power supply to power the phone and connect a probe to the neg and use that for the doing the testpoint. i've done 100's without one single problem. soldering wires is asking for trouble.

br

shahzad9 · 04-03-2006, 23:24

Quote:

Originally Posted by James-R

the easiest way to do all testpoints, motorolas,ericssons etc is to use a power supply to power the phone and connect a probe to the neg and use that for the doing the testpoint. i've done 100's without one single problem. soldering wires is asking for trouble.

br

Ok, is their some time of equipment specially desighed to carry out test point or could you point me in the right direction with regards to.... what to get??

James-R · 04-03-2006, 23:30

no, the testpoint is normally a through hole or metal pad on the phone pcb, just connect ther probe to it.

shahzad9 · 04-03-2006, 23:36

Quote:

Originally Posted by James-R

no, the testpoint is normally a through hole or metal pad on the phone pcb, just connect ther probe to it.

Sorry to be a pain but could you explain how exactly do i modify power supply to power phone and ground tp...........

James-R · 04-03-2006, 23:38

maybe i'm not clear, i use a bench power supply to power the phone.

shahzad9 · 04-03-2006, 23:43

Quote:

Originally Posted by James-R

maybe i'm not clear, i use a bench power supply to power the phone.

ok, i just done a search on e-bay and see what you are on about....................thing is i am a newbie to elecronics.....so if i purchase a bench power supply.......would i connect + to + on phone and - to tp??

James-R · 04-03-2006, 23:51

best to connect + to + on phone (about 4v) and - to - on phone and testpoint.

br

shahzad9 · 04-03-2006, 23:56

Quote:

Originally Posted by James-R

best to connect + to + on phone (about 4v) and - to - on phone and testpoint.

br

ok, i am thinking of purchasing a bench power supply, could you advise me of what cables i need to enable me to power phone and also ground tp............sorry about all the questions

James-R · 04-04-2006, 00:05

you do not have to use a power supply but its easier with, and i already had one which i made. the cables are just normal 4mm cables with banana plugs, then get some ic clips from rs/farnell/maplin etc and any test probe.

04-03-2006, 22:28	#1 (permalink)
shahzad9 Freak Poster Join Date: Oct 2005 Posts: 384 Member: 191662 Status: Offline Thanks Meter: 2	Need help with TP- First time at carrying out TP I am trying to imei patch w550i and have found the tp but can't seem to sucsessfuly ground it. I am wearing rubber soled ***** and i manually handle and use a needle to ground tp but no sucsess???????? Any help will be aprechiated.........its my first attempt at testpoint Last edited by shahzad9; 04-03-2006 at 23:11.

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04-03-2006, 22:38	#2 (permalink)
James-R No Life Poster Join Date: Jan 2005 Age: 50 Posts: 1,678 Member: 104911 Status: Offline Thanks Meter: 42	"I am wear rubber soled *****" are you for real??? try putting your other finger in the ground pin of your mains socket, that may work! br

04-03-2006, 22:43	#3 (permalink)
agent003 No Life Poster Join Date: Dec 2002 Age: 46 Posts: 787 Member: 19094 Status: Offline Thanks Meter: 3	.... I hope he dont live in my area..... otherwise we are going to have a power cut BR

04-03-2006, 23:15	#5 (permalink)
James-R No Life Poster Join Date: Jan 2005 Age: 50 Posts: 1,678 Member: 104911 Status: Offline Thanks Meter: 42	the easiest way to do all testpoints, motorolas,ericssons etc is to use a power supply to power the phone and connect a probe to the neg and use that for the doing the testpoint. i've done 100's without one single problem. soldering wires is asking for trouble. br

04-03-2006, 23:30	#7 (permalink)
James-R No Life Poster Join Date: Jan 2005 Age: 50 Posts: 1,678 Member: 104911 Status: Offline Thanks Meter: 42	no, the testpoint is normally a through hole or metal pad on the phone pcb, just connect ther probe to it.

04-03-2006, 23:38	#9 (permalink)
James-R No Life Poster Join Date: Jan 2005 Age: 50 Posts: 1,678 Member: 104911 Status: Offline Thanks Meter: 42	maybe i'm not clear, i use a bench power supply to power the phone.

04-03-2006, 23:51	#11 (permalink)
James-R No Life Poster Join Date: Jan 2005 Age: 50 Posts: 1,678 Member: 104911 Status: Offline Thanks Meter: 42	best to connect + to + on phone (about 4v) and - to - on phone and testpoint. br

04-04-2006, 00:05	#13 (permalink)
James-R No Life Poster Join Date: Jan 2005 Age: 50 Posts: 1,678 Member: 104911 Status: Offline Thanks Meter: 42	you do not have to use a power supply but its easier with, and i already had one which i made. the cables are just normal 4mm cables with banana plugs, then get some ic clips from rs/farnell/maplin etc and any test probe.