Recent content by myiannakou

  1. M

    820-02020 A2338 Touchbar

    On this model, can the trackpad work without the keyboard plugged in? Thanks
  2. M

    820-02020 A2338 Touchbar

    Customer spilt pot noddle over keyboard. Mac would not power on. Cleaned out keyboard and removed logic board. Area around UT890, CT701 and LT700 corroded. The via under pin 1 of LT700 had completly gone so ran a wire from pin 2 PP5V_S2_DFR_FILT to CX401 Pin 1 ( I did not replace LT700) After...
  3. M

    820-00840

    Replaced U7000 PPBUS_G3H = 0.30v PP3V3V_G3H still good at 3.34v 5v on charger No short on PPBUS diode reading is .436 I've noticed that the CD3215 chip I replaced is slightly different to the original. Original chip CD3215B03 which I replaced with a CD3215C00. So initially both CD3215's were...
  4. M

    820-00840

    VDDA/P look fine. I'm also thinking bad ISL Bad Board VDDA 429 VDDP 427 Good board VDDA 439 VDDP 437
  5. M

    820-00840

    No - still stuck at 5v. P_IN 5.20v VDDA 1.63v VDDP 1.61v AUX_DET 1.31v AUX_OK 3.37v SMC_RST* 1.38v AMON 0.60v BMON 0.38v
  6. M

    820-00840

    U3100 LDO readings not good so I replaced the CD3215 and now they are fine and I am now getting PP3V3_G3H. However, I was getting 0v on PPBUS_G3H. Reflowed ISL9239 and now am getting 2.5v on PPBUS. I am waiting for a delivery of ISL9239's and will change once received. Below are the readings...
  7. M

    820-00840

    These are the results for USB-C terminals. Do I still need to measure the LDO data lines or are these results below enough for me to need to replace the USB-C Ports? To me looks pretty conclusive that I'll need to change the ports considering the port pins were pretty messed up when I initially...
  8. M

    820-00840

    Board very clean - no liquid damage. Both USB-C Ports showed signs of damage. Cleaned up damage as best as I could. On one port I get 5v 0.00a on the other port I get 5v 160mA but if I spin the charging cable around I will get nothing on this port (AMP meter does not light up) PPDCIN_G3H =...
  9. M

    Where can I get donor boards from?

    Why do the boards have a hole in them??
  10. M

    820-00045 20v 160mA

    Have tried that a couple of times but no luck
  11. M

    820-00045 20v 160mA

    I can’t find an IR Oven on eBay. Is this what you mean? Will this do? https://www.ebay.co.uk/itm/T-8280-Rework-Station-Infrared-IR-PCB-Preheater-Preheating-Oven-1600W-280x270mm-/273662030044?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=710-127635-2958-0
  12. M

    820-00045 20v 160mA

    Is it worth changing the cpu just to retrieve the data and can it be replaced with just a regular heat gun?
  13. M

    820-00045 20v 160mA

    I managed to get the board to work by heating the CPU. Booted up and I had display. Shut it down to reassemble and tested again but would not come on. Board now stuck at 20v Draws 220mA for 5 seconds then drops to 160mA and stays at that. Would an SMC reset fix this or am I looking at a problem...
  14. M

    820-00840 A1708 2017 External display but no video out on built in LCD

    Hi, I did do diode mode to ground. Red probe on ground and black probe on test points. What did I do wrong? Also checked these test points on another working board and got the same results.
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