Apple MacBook Pro A2338 820-02773-A AON Rail burnt

[mferna14]

Hi Dear Friend., I am working on a Apple MacBook Pro A2338 820-02773-A. The history was that the AON Rail on the Trackpad connector JT400 was burnt. After I removed the burnt connector, I tested with the meter & no shorts. Connected the USB C power & all booted fine, no problems at all. I soldered a New TP connector put in the old trackpad with a brand new Flex cable. The laptop beeped in the start but no display. I removed the connector & the display was fine again. USED a known good Trackpad & a Flex cable, even with this still the same problem. I checked the connector whether it was soldered fine or not & all looked fine even I tested the pin continuity with the meter, all fine. What is causing this ??? I checked all the volts on the JT400, nothing abnormal. Can anyone help, thanks in advance???

[mferna14]

Never mind dear friends., I was using a M1 trackpad with cable on the M2 laptop. TWO Totally different architectures. This is why my display was going off. I have ordered the correct one. Nice to know about this difference. A2238 M1 (2020) trackpad cannot be used on A2338 M2 (2022) & via versa. I think trackpad is aslo different & cannot be interchanged.