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Old 10-19-2018, 22:50   #5 (permalink)
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Originally Posted by mandango View Post
Hi, like commented was water damage, was sulfated just at bottom rear area, up to backlight capacitors anf filters. Changed a filter and capacitor and half backlight issue removed. But still stuck in searching and don't show baseband version, IMEI is OK. Also some times doesn't work the touch.
Rest of the board wasn't sulfated.
Any clue to start measuring/tests? Any trick to check if BBPMU_RF right or the issue withouth removing?
Thanks in advance for any help
1. Check 5 BBPMU_RF outputs
PP_VSW_S1 (0.9v)
PP_VSW_S2 (1.25v)
PP_VSW_S3 (1.16v)
PP_VSW_S4 (1.85v)
PP_VSW_S5 (1.01v)
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