A trick to find easy testpoint on A50 - GSM-Forum

pez8210 · 05-21-2003, 20:49

When A50 is on you can find 3,6 Volts on test point (near 1 key)

A good gadget to find this testpoint is put a led between gnd and test point with 2 1n4148 diodes in parallel for reduce voltage, each diode consums 0.7 V if you put 2 diodes in serial mode you decrease in 1.4V this 3,6 V with 2.4V led works ok.

Then you connect this to the needle.

Led diode
------/<-----
GND phone----- ----- To Needle
---/<----/<-
D1 D2
D1 and D2 = 1N4148

First you power on the phone find the test point with the needle until led lights then you have located test point

Second power off the phone and use unlock soft

That´s all

Sorry for schematics but I can´t use space bar for make it more understand it

Siemens man · 05-22-2003, 16:58

hi man
i don't understand. please picture upload here.

pez8210 · 05-22-2003, 17:54

please explain to me how to upload pictures

j2000 · 05-22-2003, 19:02

Please..Send Picture to me...to : [email protected] and i will Upload this pic and post it here....

BR

J2000

pez8210 · 05-22-2003, 22:45

Thanks for your help

I sent to you the schematic

please don´t reply to the mail address

This is my mail

[email protected]

j2000 · 05-23-2003, 07:20

Hello...pez8210 ..
I have to send mail to u from: [email protected]
BTW: u have martech software for New Siemens? i see it in forum..and i want to ask about it....Did u use this Software very powerfull..??? coz i want to buy it...still collect the money...

Regards

J2000

pez8210 · 05-23-2003, 16:54

If you want I can sell you mine, I´m very disgusted with this soft specially if you want to unlock S55

Madness

j2000 · 05-23-2003, 19:19

Give result from this test point...

BR

J2000

pez8210 · 05-24-2003, 12:23

Thanks J2000

Lenny(r) · 05-24-2003, 12:36

simple and good idea for smart needle!
Tnx to pez8210
BR LC

wilcd · 06-11-2003, 16:33

pez8210,,you have any alternative for s55 testpoint?? it's really hard to solder a+b

Porter · 06-11-2003, 21:20

Good idea for beginers. But if You have little skul of it You can do it wery easi using simple nidle

Remember! If You push needle to hurd You can destroj PCB!!!

edemy2001 · 06-13-2003, 10:36

Not work!!! I measure 2.4 V at TP, when needle is not include.

05-21-2003, 20:49	#1 (permalink)
pez8210 Freak Poster Join Date: Jul 2001 Location: Palma de Mallorca Age: 50 Posts: 294 Member: 5369 Status: Offline Thanks Meter: 0	A trick to find easy testpoint on A50 When A50 is on you can find 3,6 Volts on test point (near 1 key) A good gadget to find this testpoint is put a led between gnd and test point with 2 1n4148 diodes in parallel for reduce voltage, each diode consums 0.7 V if you put 2 diodes in serial mode you decrease in 1.4V this 3,6 V with 2.4V led works ok. Then you connect this to the needle. Led diode ------/<----- GND phone----- ----- To Needle ---/<----/<- D1 D2 D1 and D2 = 1N4148 First you power on the phone find the test point with the needle until led lights then you have located test point Second power off the phone and use unlock soft That´s all Sorry for schematics but I can´t use space bar for make it more understand it Last edited by pez8210; 05-21-2003 at 20:54.

05-22-2003, 22:45	#5 (permalink)
pez8210 Freak Poster Join Date: Jul 2001 Location: Palma de Mallorca Age: 50 Posts: 294 Member: 5369 Status: Offline Thanks Meter: 0	@J2000 I sent to you the schematic Thanks for your help I sent to you the schematic please don´t reply to the mail address This is my mail [email protected]

05-23-2003, 19:19	#8 (permalink)
j2000 No Life Poster Join Date: Sep 2001 Location: Country of "TIHS" Posts: 888 Member: 6349 Status: Offline Thanks Meter: 6	TEs Point from Pez8210 Give result from this test point... BR J2000

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05-22-2003, 16:58	#2 (permalink)
Siemens man No Life Poster Join Date: Apr 2001 Location: IN CASTLE Age: 46 Posts: 5,798 Member: 3925 Status: Offline Thanks Meter: 22	hi man i don't understand. please picture upload here.

05-22-2003, 17:54	#3 (permalink)
pez8210 Freak Poster Join Date: Jul 2001 Location: Palma de Mallorca Age: 50 Posts: 294 Member: 5369 Status: Offline Thanks Meter: 0	please explain to me how to upload pictures

05-22-2003, 19:02	#4 (permalink)
j2000 No Life Poster Join Date: Sep 2001 Location: Country of "TIHS" Posts: 888 Member: 6349 Status: Offline Thanks Meter: 6	Please..Send Picture to me...to : [email protected] and i will Upload this pic and post it here.... BR J2000

05-23-2003, 07:20	#6 (permalink)
j2000 No Life Poster Join Date: Sep 2001 Location: Country of "TIHS" Posts: 888 Member: 6349 Status: Offline Thanks Meter: 6	Hello...pez8210 .. I have to send mail to u from: [email protected] BTW: u have martech software for New Siemens? i see it in forum..and i want to ask about it....Did u use this Software very powerfull..??? coz i want to buy it...still collect the money... Regards J2000

05-23-2003, 16:54	#7 (permalink)
pez8210 Freak Poster Join Date: Jul 2001 Location: Palma de Mallorca Age: 50 Posts: 294 Member: 5369 Status: Offline Thanks Meter: 0	If you want I can sell you mine, I´m very disgusted with this soft specially if you want to unlock S55 Madness

05-24-2003, 12:23	#9 (permalink)
pez8210 Freak Poster Join Date: Jul 2001 Location: Palma de Mallorca Age: 50 Posts: 294 Member: 5369 Status: Offline Thanks Meter: 0	Thanks J2000

05-24-2003, 12:36	#10 (permalink)
Lenny(r) Junior Member Join Date: Sep 2002 Location: EU Age: 51 Posts: 20 Member: 16087 Status: Offline Thanks Meter: 0	simple and good idea for smart needle! Tnx to pez8210 BR LC

06-11-2003, 16:33	#11 (permalink)
wilcd Freak Poster Join Date: Nov 2001 Location: Spain Posts: 211 Member: 7632 Status: Offline Thanks Meter: 0	pez8210,,you have any alternative for s55 testpoint?? it's really hard to solder a+b

06-11-2003, 21:20	#12 (permalink)
Porter No Life Poster Join Date: Jan 2003 Location: Ukraine. Lviv Age: 43 Posts: 1,781 Member: 19633 Status: Offline Thanks Meter: 13	Good idea for beginers. But if You have little skul of it You can do it wery easi using simple nidle Remember! If You push needle to hurd You can destroj PCB!!!

06-13-2003, 10:36	#13 (permalink)
edemy2001 Junior Member Join Date: Jun 2003 Location: BULGARIA Age: 65 Posts: 19 Member: 30293 Status: Offline Thanks Meter: 0	Not work!!! I measure 2.4 V at TP, when needle is not include.