Search results

Not able to access Security Settings. It does the same crash then reboot issue.

Sorry for the delay in reply. Yes, we can start internet recovery. But the system crashes when it starts installation. We've double checked nand voltages, 0.9, 1.8 & 2.5. all present. We thought we found a short on 2.5Nand but it was an error in diagnosing. Could this be nand failure without...

No Data to Save. Have tried a DFU restore, but it doesn't load the OS onto the Mac. Is it supposed to automatically reinstall the OS after being restored? After successful restore, the host mac shows a lock symbol. The restored mac shows nothing but when rebooted goes back to folder flashing.

It has no OS & administrator account, I believe it's been previously restored. It gives us the message: Recovery is trying to change system settings: No administrator was found. Is there anything else we can try?

Hi Team, I've got a 820-01598 which is showing a folder logo. Checked all SSD voltages and reset lines, all good. Understand we can't just boot from a USB installer on these T2 models. I've tried Catlina internet recovery installation, while plugged via ethernet, it allows me to select the...

Also just to add that we’ve checked for the common flexgate issue on the camera flex and it looks fine

Hey guys, got a strange one here. Webcam works fine until a reboot and then shows that there is no camera connected. When the camera stops working we still have 5v on PP5V_S0_ALSCAM_F We’ve tested this logic board with a known good screen and same fault. Tested the screen with another logic...

yes DP_INT_HPD was checked with screen connected. The EDP INT lines missing are the ones below which were checked in diode mode both with and without screen connected: EDP_INT_AUX_N = 0 EDP_INT_AUX_P = 0 EDP_INT_ML_N<0> = 0 EDP_INT_ML_P<0> = 0 EDP_INT_ML_N<1> = 0 EDP_INT_ML_P<1> = 0...

Yes I tested with a known good screen and tested this screen on another board.. I still don't have any of the EDP INT values

DP_INT_HPD is showing 3v3

I have re-tested and I do have correct voltages for 3V3/5V_S0SW_LCD

PANEL_P3V3_EN_DLY is 3.4V

BUF_EDP_PANEL_PWR_EN is 3.4V

EDP_PANEL_PWR_EN is 3v3 and steady We have continuity from U8510 and J8500

This device came through for a 'FlexGate' repair however when we have checked the lcd connector J8500 we're missing all the EDP lines.. I've not yet come across a device with all the EDP lines missing so not sure if this is game over as the EDP_ML lines show value but the cpu is showing heat in...

Even when on standby (lid open) it will sometimes fully shut down. Can be booted back up through long press of power button but takes a while to then power back up

Hey Guys, We've got a MacBook in that the user has advised that when he puts it to sleep it sometimes completely powers down. As we've been completing some testing, we have had it on charge with the Ammeter and when we go back to check on it, the Ammeter shows 20V 0A. If we disconnect the...

Hey guys, Just wondering what everyone does to test Macbook battery performance? We normally will complete and pre & post discharge test with the old and new battery so we have a record of the results. We’ll put on a 10hour youtube video and keep it aside and log the drainage results. Is...

Hey Guys, We've got a A2141 which had some liquid damage around U6420 and we're experiencing a weird fault with the sound. We hear the chime when the Mac boots (although it sounds like the speaker has blown but tested in another housing and still the same) and we also hear when the charger is...

please can you explain what the circled notes mean? tested the line against known good board and also there is no short on line when cpu is removed