Hello,
I have Iphone 5s water damage. Phone history: 24h in water than 6 months drying . Phone starts up, but no proper gps signal, rear camera dead everything else seems good and lcd backlight has some water. I did see some corrosion on front camera fpc, on antenna connections too. So, I decide clean whole logic board with Alcohol isopropyl 99%. I did remove all metal shields, there is some corrosion on some caps as C329; C69; C131. I put everything back , phone starts but touch stops working and after picture gone just backlight comes. After 2 attempts phone dead completely. I have some test leads, direct voltage to logic board from regulated PSU 4,9v. Nothing, completely dead.
So I have few questions:
1) How I can manually switch on phone? I did see its possible shorts some pins to do this manually without ribbon flex.
2) there is some test pins ? Where is should to check voltage? comes or not to IC and where?
P.S I have block diagram proper tools but I never did repair logic board before.
I have Iphone 5s water damage. Phone history: 24h in water than 6 months drying . Phone starts up, but no proper gps signal, rear camera dead everything else seems good and lcd backlight has some water. I did see some corrosion on front camera fpc, on antenna connections too. So, I decide clean whole logic board with Alcohol isopropyl 99%. I did remove all metal shields, there is some corrosion on some caps as C329; C69; C131. I put everything back , phone starts but touch stops working and after picture gone just backlight comes. After 2 attempts phone dead completely. I have some test leads, direct voltage to logic board from regulated PSU 4,9v. Nothing, completely dead.
So I have few questions:
1) How I can manually switch on phone? I did see its possible shorts some pins to do this manually without ribbon flex.
2) there is some test pins ? Where is should to check voltage? comes or not to IC and where?
P.S I have block diagram proper tools but I never did repair logic board before.