Recent content by bartech

diode mode u2890 1-585 2-584 3-586 5-588 6-589 7-1558 8-338

i change u2890 but the same . which filter caps?

at t-con of lcd pwr 3,37 avddn 5,44 avddp 5,44 rst-3,33 cclk-3,33 tms-3,33 5v-5v vst 11,95 1v8-1,8v tdi-3,3v vcmp-0,6v tmscl-3,3 imscl-3,3 wp-3,3 rest 0 v

check on j8500 continuity all ok on 25 and 27 i got 1580 on multimeter on 31 and 33 - 1780 on multimeter d8410 all ok

i compare and on one of cd3215 u3200 there is diffrent on LDO line on pp3v3_upc_xb_ldo , lower than on other ones

no history but board look clean. u5700 1-0 2-8,8v 3-3,23 4-8,8v 5-5 6-0 7-5 8-12,31 11-0 12-5,19 13-0,19 14-4,96 15-3,79 16-0 17-4,98 18-0 19-3,7 20-3,79 21-3,79 22-3,79 23-3,79 24-3,79 25-0 26-3,79 27-3,23 28-8,77 29-8,79 30-4,23 31-3,8 32-0

Sorry 1,2 -0 4- 5-5,14 9,10 -12,61 11-6,27 12-0v 15-4,79 16-4,76 17-3,37 18-5,15 19-0,17 21-42v 22-0v

i found that on c3200 when usb c connected there is 0v i change u3200 and c3200 and still 0v

missing only backlight sorry check again when for sure there is data problem was that there is apple logo and than black screen when i check 1,2 - 0v 4-0v 5-7,38v 9,10 - 17,10v going up slowely stop at 18,90 11- 9,47 12-0v 15-7,23v not stable 16-7,23v not stable 17-5,10v 18-7,80v 19-0,27...

u8400 1,2 - 0v 4-0v 5-5,5v 9-0v 10-0v 11-15,7v 12-0v 15-5,5v 16-5,5v 17-0v 18-5,5v 19-0,13v 21-0v 22-0v

check on other working lcd the same , no backlight.

on external monitor there is video

now no backlight i change u8400 and nothing change

still same, i check and found that you cant change brightness i try to change on touchbar but nothing change stay as same brightness. When it put screen to sleep and switch off i can wake it up by power button and it wake up the screen

yes but sometimes nedd some time to change to 0v, one time i use only one magnet and go to 0v on left and right