Recent content by Instafixx

PPCHGR_VDDA was shorted. Injected Voltage and the old U5200 flashed on the thermal camera and short was gone. Now replaced with a new U5200. Device turns on now.

I put back the old U5200.Its back to 0.5V

Device Stuck. at 5V. No shorts . Nothing on the thermal camera. PPBUSis 0.5V. Removed the Fuse. Still 0.5V at C5250 PPDCIN is in sync with the AMP Meter. Resistors around U5200 are okay. Replaced U5200. Now PPVBAT_AON_CHGR_REG pulses between 1.2V to 4V

i think customer must have tried to do some software or something in that original condition that led to camera issue. i did a DFU Revive and now camera is working.

Since i have tried a different TCON board and also a different lcd assembly. JP600 should be the suspect here. Diode reading there is normal. What else to check?

Couldnt find it anywhere on the Boardview. Its there only in the schematics

All Coils getting 1.2V What is UP102?

Yes.

Macbook A2337 Camera Issue Device was stuck in Round Logo with a slash inside it (Recovery or No Software). Water Damage as the small audio board. Cleaned it. Turns on now. Had to replace the trackpad flex cable as well. Everything fine now except "No Camera Connected". PP5V_MAIN_ALSCAM_F is...

Diode Mode to ground at 3v8_aon is 0.177. Which seems okay as compared to a good board.

Macbook A2442 Came in as Not turning on. PP3v8 shorted. Injected voltage. U7700 heating up. Short removed. PPBUS is 12.3V 3V8_on is Present AMP Meter stuck at 5V and drawing close to 0 Amps Pp1v_s2 is 0.300-0.400V 3v3_s2 is 1V PP5v_s2 main is missing. U5700 is behaving weird. If i probe around...

I had replaced RD560 but didnt work. Replaced again with a jumper from PPBUS to PPVIN. Machine turns on now.

Please help.

1 - ppbus_3v3s2_vin - 2.7 - 2.8 v 2 - p3v3s2_sw - 0.798 v 3 - gnd 4,10,11 - p3v3s2_agnd - 0v 5 - p3v3s2_fb - 0.197 6 - p3v3s2_vos - 800 7 - p3v3s2_pgood - 0v 8 - p3v3s2_en - 1.8 v 9 - p3v3s2_ss - 0v I replaced UC710. Its still the same. Input should be 12V but somehow its 2.8V. No shorts on...

1 - p3v3_s2sw_ipd_dvdt - 0.145v 2 - p3v3_s2sw_ipd_en - 1.47 v 3/4 - pp3v3_s2 - 0.780 v 5 - pp3v3_s2sw_ipd - 0 v 6 - p3v3_s2sw_ipd_flt_l - 1.7 v 7 -p3v3_s2sw_ipd_ilm - 0v 8 - gnd