Search results

Ok, never mind, USBC_TB_CC2 is fine. There is continuity, I just couldn't measure it with DZB551 attached. Not sure what's happening, why I'm not getting video. This seems like it should have just been a lid sensor issue so I can't imagine it's something deeper. Using a known good screen. I...

All SMC_LID signals are at 3.4V. It looks like the USBC_TB_CC2 line right next to the lid sensor is missing continuity to CB414. I'm not sure how this would cause this issue but I'll need figure out what's happening there and get a line run.

This came in with very isolated corrosion around the right hall sensor. I repaired that and SMC_LID is at 3.4V but it's still acting like SMC_LID is low. The keyboard is not functional and the screen isn't coming on. It does display on an external monitor though. Not sure what else would be...

Putting this out again if anyone's found the 1.5mm hall sensors for the newer MacBook Pros. Still trying to find a source.

PP3V3_G3H: 3.3V PP5V_G3S: 5V PPBUS: 12.62V CPUVR_SWSA: 1.05V PVCCIO_PHASE: .95V P1V2_PHASE: 1.2V PP0V9_SSD0: .9V PP1V8_SSD0: 1.8V PP2V7_NAND0: 2.7V Nothing on PPVCC_S0_CPU or PPVCCGT_S0_CPU

So I guess I'll have to try replacing U8400. External monitor is working. Would that still work if eDP is blown?

This had some type of minor spill but I'm struggling to find much sign of it. The little bit of corrosion was cleaned before it got to me. It gets 20V, has PM_SLP_S4_L, has 5V on PP5V_MAIN_VCCSA but no CPU power. There is a very slight amount of heat on the CPU. I'm not finding any shorts...

No damage near J8500 or anywhere along the top. The only place the board got his was at the bottom near U8400.

This board boots and has display on external monitor. Can't tell if it has video on LCD screen. Has EDP_BKLT_EN at 3.3V. Has PP5V_S0SW_LCD at 5V. 0V on PPVOUT_LCD_BKLT. Is this just a U8400 replacement? I'm trying to rule everything else out before just replacing it. The board was hit by liquid...

That's perfect, thanks. Didn't see that voltage line there. Turns on fine now. Thanks.

This board has one issue in that it can't get PM_EN_P3V3_G3H because the pad is blown off on the enable line leading to U6903 to make PP3V3_G3H. See picture. Does anyone have any novel way of dealing with this type of thing? I need to get 3.3V to pin 10 but there's nothing I can tap in to. All I...

Thanks, I can't invest the time to reball the SMC but I changed everything around U5110, including a different U5110. We'll see if it holds up. If not I'll sell it as-is to someone who has time to pull the SMC.

Any idea what would cause SMC_RESET_L to get pulled down like that? I had assumed U5110 but what you're thinking is that it was just the SMC doing it?

Sorry, no, I was still looking at BGATE. BMON is at .63V without battery, and .50V with battery. And yes, I'm getting stable SMC_RESET_L now - with and without battery plugged in - ever since I measured 3V42 and it came back on. Something is unstable on this and appears to be intermittently...

Ok, it just shifted. The SMC is not turning on now, even without the battery. PPBUS is at 8.19V and SMC_RESET_L is down at around 1V and bouncing around a little. This is what it was doing before I replaced U5110. As I'm writing this I tested 3V42 and the board turned on and works again without...

SCL and SDA are normal at .519 and .518 and 3.4V with normal communication drops when adapter is plugged in without battery. PPBUS voltage on battery is same as a good board at 7.65V. Voltage while plugged in with battery bounces between 8.1V and 8.3V. MagSafe light goes off. SCL and SDA stay...

This came to us with the smallest amount of corrosion on C5126. I replaced that and U5110. Entire area around SMC, and entire rest of board, was clean. The computer works fine until you plug a battery in. After that the MagSafe light either stays orange or doesn't come on and the computer won't...

Liquid-damaged

Any thoughts on this? I replaced the audio board flex cable and now have it narrowed down to only having an issue when you close the screen. Once that happens, the screen will not come back on and the only way to restart the computer is to do an SMC reset. It will then be back to normal after...

This doesn't look like liquid-damage but I'm not completely sure. No obvious signs. The fan spins up high immediately. 5V and PPBUS are getting to U7200. I replaced U7200. No change. Not sure where to go next.