Box Selftests Fail, What to do....
 

For those who have Box Selftests Fail Warnings, a litle guide....

1- Normal result of Selftests ( box is OK nothing to worry )


2- VPP Supply Voltage test failed

3- VBAT Supply test fail


For more info, Use Search, Read sticky posts, there is alot of info already posted....
BR

Internal Box VPP Enabled
Box Selftests Failed -> VPP Supply Voltage test failed,
1.25v is out of valid range

In this case, contact your reseller for Box exchange

this is my error. and bought from *************. and to that box back its cost me too much. i already paid 146 for box and 100 usd from delivery. is there any easy way to fix this problem

@ sameenshah123

read here how VPP works:

http://forum.gsmhosting.com/vbb/show...9&postcount=61

Here an easy way to check VPP:

http://forum.gsmhosting.com/vbb/show...27&postcount=9

If your box is ones with the old HW, as mine (using LM1950T)

http://img91.imageshack.us/img91/4992/04012009062.jpg


http://forum.gsmhosting.com/vbb/atta...3&d=1245914162

you can tray resolder U5 ( LM1950T )
if this dont solve the problem, then you need to change the U5... you can remove U4 (used for switch ext VPP) and use it to replace U5, doing this you recover the Internal Box VPP function, and loose the ext VPP function...

witch box hardware is better old or new. man i am in big trouble coz i am not got to fix hardware.

I think there is at least 3 diferent HW versions, the first with LM1950T ( i have this ), the second with CS8240, and the third with LM3526H.... i cant say which is better as i only have 1....

If you dont have the skill to do the tests posted, then better contact reseller, or Mr. Cyclonebox ( see this post )

http://forum.gsmhosting.com/vbb/show...2&postcount=25

BR

Thanks ptt for your superb suppport !

man today i open my box and i saw its have LM3526H should i change these 2 ice. coz i cyclone can read phone when conect cable direct to box without tx2 adapter. but with adapter its dont detect. and box self test fail.and some time box self test ok. i can flash dct4 phone and unlcok and as well bb5 unlock but not flash. plz tell me sould i change these 2 ice. and i cant get (LM3526H) i found uc3526h) is it ok to replace with this ic. ?

Better check your adapter solderings, if you conncet directly to box and it works that means your box hardware is perefect

well , mine all tests are o.k
thought im getting error when tma adapter conected to box with usb power ,then i get error . if i disconect the usb power , then all tests going fine ...
ideas ?

i also open tx2 adapter. there 10 soldring point. and all sold well. i was also suspecting problem should be in adapter. can u plz give any hint or trick that i check adapter. i mean how to check adapter. if solding is ok. what wire to check with meter. i am that good in hard ware. plz sugestion ?

It is a little "hole" in the project of the tma adapter 1.1. The usb cable is connected to the Pin 1 of the adapter (Vbatt); if you connect the TMA to the box and you start the program, the self test check all the configurations; one of the test is the Vbat .. test one Vbatt must be about 5 V if needed and this test pass.. second part is Vbatt must be 0 if needed but whatever the box sto giving power to the vbatt the test read 5 Volts coming from the adapter USB cable to the pin1 and you get the error. was enaugh one diode on the pin 1 to prevent this error..
Obviously this error doesn't happen with the tma evolution.

BR

Alex

Mr Ptt
i have this problem
and same times give me this
[/CODE]Started box selftests procedure
USB Voltage 4.94v PASSED
MCU Voltage 3.28v PASSED
Core Voltage 1.76v PASSED
Box Selftests Failed -> VBAT Supply Voltage test failed, 4.42v is out of valid range
Initializing FBUS...
All initialized - Ready to work[/CODE]
What can i do to fix this problem

You get the error when start the soft with cable conected to Service socket ? Is better to start the software without cable conected at Service port.

If the error produces randomly, you can verify if the voltage at VBAT terminals of FBUS cable is correct ( if box say 3.39V and you get near 4.8V then is calibartion resistors, and is not to worry about )

If you get the voltages that Box say in box selftests, then maybe you have bad solders at IC which manages VBAT...

BR

hello , here with my box only green light is on , nothing no reaction

@ deal1975

Hi, the green led remains ON, and nothing more hapens ? PC detects Box and ask for drivers ? If the PC cant detect your box i think you need contact your reseller for Box Exchange....

I sugest you, open a new thread regarding your problem, here we are talking about "Box Seltests Fail" problem...

BR