Hi,
This is my first post asking for help, but I feel I have now reached a point where I am out of my depth entirely.
820-01814-A board model, purchased with knowledge it was faulty and had water damage that had affected the touchbar. Water damage was located around the touchbar connectors to the point there were open circuits. When turned on the touchbar would light up, but the entirety of it was scrambled colours and pixelation.
I replaced the topcase (wasn't comfortable doing a touchbar swap) expecting this to be a simple issue of an open circuit, but instead the touchbar now doesn't have any life. Thinking this was an issue with the new touchbar, I actually went and bought another topcase to rule that out. Note: this is a hobby so I'm not all that stressed about this not being the most cost-effective method, it's all a learning process.
I found damage on the J5100 connector so I removed added solder and placed the connector back. Afterwards I tested the connector for continuity from the pins (internally) to the corresponding points on the board. All checked out.
I have also replaced Q5100 and U5104, yet still no change.
I am trying to get voltage readings, but the test pads for these circuits aren't accessible while the board is in the case. So, please if there are any readings I should get that may help I will. I have initial readings, see below
PP1V8_SLPS2RSW_DFR - 1.806v
PP5V_G3S_DFR_FILT - 5.10v
PP5V_G3S - 5.11v
PP3V3_G3HSW_DFR - 3.386v
PP3V3_G3H_DFR - 3.385v
DFR_PWR_EN_R - 1.779v
IPD_LID_OPEN - 1.8v
IPD_LID_OPEN_R - 1.775v
Any help is greatly appreciated, and I will try get any readings needed to further diagnose.
This is my first post asking for help, but I feel I have now reached a point where I am out of my depth entirely.
820-01814-A board model, purchased with knowledge it was faulty and had water damage that had affected the touchbar. Water damage was located around the touchbar connectors to the point there were open circuits. When turned on the touchbar would light up, but the entirety of it was scrambled colours and pixelation.
I replaced the topcase (wasn't comfortable doing a touchbar swap) expecting this to be a simple issue of an open circuit, but instead the touchbar now doesn't have any life. Thinking this was an issue with the new touchbar, I actually went and bought another topcase to rule that out. Note: this is a hobby so I'm not all that stressed about this not being the most cost-effective method, it's all a learning process.
I found damage on the J5100 connector so I removed added solder and placed the connector back. Afterwards I tested the connector for continuity from the pins (internally) to the corresponding points on the board. All checked out.
I have also replaced Q5100 and U5104, yet still no change.
I am trying to get voltage readings, but the test pads for these circuits aren't accessible while the board is in the case. So, please if there are any readings I should get that may help I will. I have initial readings, see below
PP1V8_SLPS2RSW_DFR - 1.806v
PP5V_G3S_DFR_FILT - 5.10v
PP5V_G3S - 5.11v
PP3V3_G3HSW_DFR - 3.386v
PP3V3_G3H_DFR - 3.385v
DFR_PWR_EN_R - 1.779v
IPD_LID_OPEN - 1.8v
IPD_LID_OPEN_R - 1.775v
Any help is greatly appreciated, and I will try get any readings needed to further diagnose.
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