Samsung P1010 touchscreen solution. - GSM-Forum

karlos0071 · 03-21-2013, 09:58

Hello everybody,
I have a strange problem with Samsung Galaxy Tab P1010.
The problem is touchscreen not working at all.
What I did already:change touchscreen,rehot mainboard,reball touchscreen IC U802,replace touchscreen connector on board.
Always I rehot the U802 IC touchscreen working excellent for about 12-24 hours,then again no response at all.I have raballed that IC 3 times,probably problem is inside the IC but I can find this IC nowhere to buy.
The biggest question is:does anybody know is this U802 IC compatible with any other Samsung board?(except P1000-it is same).

Many thanks for any help
Regards
Karel

karlos0071 · 03-22-2013, 09:32

Nobody?Please,please

d-Artigo · 03-22-2013, 11:21

Quote:

Originally Posted by karlos0071

Hello everybody,
I have a strange problem with Samsung Galaxy Tab P1010.
The problem is touchscreen not working at all.
What I did already:change touchscreen,rehot mainboard,reball touchscreen IC U802,replace touchscreen connector on board.
Always I rehot the U802 IC touchscreen working excellent for about 12-24 hours,then again no response at all.I have raballed that IC 3 times,probably problem is inside the IC but I can find this IC nowhere to buy.
The biggest question is:does anybody know is this U802 IC compatible with any other Samsung board?(except P1000-it is same).

Many thanks for any help
Regards
Karel

samsung gt-P1010 touchscreen
first: check regulator U800
if this U800 does not work U802 also does not work
check working voltage U800 at C809 and L801
check vout U800 in C810 and C811
if the touchscreen is still working on components like the original
check working voltage U802 at C805 .... C806 .... C807 and C808
check touchscreenya lines:
TSP _ SDA at R803
TSP_SCL at R804
TSP_INT at R802
see the picture below (the position of the component on the pcb)

only thank button

karlos0071 · 03-22-2013, 18:00

Thank you for reply.
I have checked these solutions step by step already.I am almost sure problem is in U802 and my question from my first post was about compatibility that IC.

Anyway thank you for your time
Regards
Karel

karlos0071 · 03-22-2013, 18:02

I would like to change both ICs U800(regulator) and U802 but do not know where to get them

03-21-2013, 09:58	#1 (permalink)
karlos0071 Junior Member Join Date: Sep 2007 Location: ** off Posts: 38 Member: 599288 Status: Offline** Thanks Meter: 3	Samsung P1010 touchscreen solution. Hello everybody, I have a strange problem with Samsung Galaxy Tab P1010. The problem is touchscreen not working at all. What I did already:change touchscreen,rehot mainboard,reball touchscreen IC U802,replace touchscreen connector on board. Always I rehot the U802 IC touchscreen working excellent for about 12-24 hours,then again no response at all.I have raballed that IC 3 times,probably problem is inside the IC but I can find this IC nowhere to buy. The biggest question is:does anybody know is this U802 IC compatible with any other Samsung board?(except P1000-it is same). Many thanks for any help Regards Karel

03-22-2013, 09:32	#2 (permalink)
karlos0071 Junior Member Join Date: Sep 2007 Location: ** off Posts: 38 Member: 599288 Status: Offline** Thanks Meter: 3	Nobody?Please,please

03-22-2013, 18:00	#4 (permalink)
karlos0071 Junior Member Join Date: Sep 2007 Location: ** off Posts: 38 Member: 599288 Status: Offline** Thanks Meter: 3	Thank you for reply. I have checked these solutions step by step already.I am almost sure problem is in U802 and my question from my first post was about compatibility that IC. Anyway thank you for your time Regards Karel

03-22-2013, 18:02	#5 (permalink)
karlos0071 Junior Member Join Date: Sep 2007 Location: ** off Posts: 38 Member: 599288 Status: Offline** Thanks Meter: 3	I would like to change both ICs U800(regulator) and U802 but do not know where to get them