Recent content by TBFix

Partially damaged cpu no doubt.

EDP_AUXCH_N is reading short.

No it stays low all previous measurements were with screen attached.

Hi I checked J8500 diode mode and all seem ok no shorts. PP5V_S0SW_LCD = 5v PPVOUT_S0_LCDBKLT = 0v PPVIN_S0SW_LCDBKLT_R = 12.5v LCDBKLT_EN_L = 12.48v PP5V_S0_BKLT_A = 5v PP5V_S0_BKLT_D =5v EDP_BKLT_EN = 0v I have also replaced U8400 Any ideas?

I changed both the nands and I dfu no problem and now it boots and chimes but has no backlight so investigating that now. I have external video only.

No sign of spillage/damage. Customer said they had just finished installing os and it would not power up again. PPbus is 12.6v I have tried in dfu mode and forced dfu mode but still get amrestore error. SSD voltages present PP1V8_IO_SSD0, PP0V9_SSD0 , PP2V5_NAND_SSD0 on both nand chips.

Hi yes I meant to mention no external video apologies. All diode reading are good. When I got it, I fixed the initial issue which was u7800 then upon testing found where I am at now.

Hi Macbook came in No spillage with short on PP3V3_S5 after removing and replacing u7800 short is gone. The board draws up to 680ma then drops to 340ma. Chipmunk usb activity led shows activity on usb. but black screen. (also tried known good screen) L8030 1.2V L7960 .95V L7900 1V L8060 1V...

Has anyone got any hd images of around U8600 as some of the components got bumped.

I should have a few here will try it. Thank you for your help.

Hi yes continuity on both L8502/L8503 . These should read about .5 diode reading but they read .223 . u8502 enable pin 11 Can I measure this with board out or does webcam need to be connected. How to check ALS?

Logic board had spillage around C6907 . L850 was burned so replaced it and U8500 as no PP5V_G3S_ALSCAM. Now getting PP5V_G3S_ALSCAM and present on J8500. I have tried 2 different screen assemblies both webcam not present. I have also checked L8503 and L8502 both read .223 diode reading. U8502...

Looks like the ribbon cable may have inserted in the wrong pins.

L7220/L7210 are 1.06v L72701.05v L7410/L7420/L7430 all 0v Im told it powered up and display and touchbar worked then the connector of touchbar got very very warm and after that no display on screen and no touchbar display.

Hi the main display and the touchbar display are not working. No external video or usb activity.