it-solve
Member
Go this A2442 820-02098 with liquid damage.
Visible damage with a burn mark on CD3217 closer to the HDMI. Shorting LDO's. Shorts gone with removed CD3217
Visible blown TPS62180 ELC180. When removed short persists between two phases
Initially would stay on 5V 0.25A via the Magsafe3
With removed CD3215 and TPS its stuck on 5V, puls 0.25A first couple seconds, then falls to 0.05A with no heat signature.
We need all CD3217's available for this board to switch to 20V, right? I assume I need to get CD3217 in first, then worry for the TPS? It used to be SSD PWM with A1990 there I believe. Can I use CD3217B12 from ali/ebay or does it needs to be from a donor board?
Suggestions?
Visible damage with a burn mark on CD3217 closer to the HDMI. Shorting LDO's. Shorts gone with removed CD3217
Visible blown TPS62180 ELC180. When removed short persists between two phases
Initially would stay on 5V 0.25A via the Magsafe3
With removed CD3215 and TPS its stuck on 5V, puls 0.25A first couple seconds, then falls to 0.05A with no heat signature.
We need all CD3217's available for this board to switch to 20V, right? I assume I need to get CD3217 in first, then worry for the TPS? It used to be SSD PWM with A1990 there I believe. Can I use CD3217B12 from ali/ebay or does it needs to be from a donor board?
Suggestions?