Alcatel 5044Y (U5) White Display problem - GSM-Forum

mkgunner · 06-01-2021, 21:32

So customer brought to me Alcatel 5044Y (U5) with cracked touchscreen to be replaced. tested the new one before assembling but after replacement the display shows just white picture. Tried new display and new touchscreen but the same problem. Though maybe there was a bad contact on the display connector on the board, resoldered all the pads but nothing. replaced the connector with new one and again the same problem.
If anyone knows the measurement values of the filters on the other side of the board or have a schematic would be great.
Thanks

mkgunner · 06-04-2021, 12:48

Can someone with a working 5044Y measure the values of the components shown on the pics and trace the path of the display connector pins on the board?
I changed the display filters on the board but white display again

Sent from my Redmi Note 9S using Tapatalk

06-01-2021, 21:32	#1 (permalink)
mkgunner Freak Poster Join Date: Jul 2015 Location: Macedonia Posts: 150 Member: 2430631 Status: Offline Thanks Meter: 40	Alcatel 5044Y (U5) White Display problem So customer brought to me Alcatel 5044Y (U5) with cracked touchscreen to be replaced. tested the new one before assembling but after replacement the display shows just white picture. Tried new display and new touchscreen but the same problem. Though maybe there was a bad contact on the display connector on the board, resoldered all the pads but nothing. replaced the connector with new one and again the same problem. If anyone knows the measurement values of the filters on the other side of the board or have a schematic would be great. Thanks

06-04-2021, 12:48	#2 (permalink)
mkgunner Freak Poster Join Date: Jul 2015 Location: Macedonia Posts: 150 Member: 2430631 Status: Offline Thanks Meter: 40	Can someone with a working 5044Y measure the values of the components shown on the pics and trace the path of the display connector pins on the board? I changed the display filters on the board but white display again Sent from my Redmi Note 9S using Tapatalk