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Is there stencils available to reball these chips that you know of? U4600, U4650, ISL? These chips came off of donor and I would feel more confident in their functionality if I could reball them You mentioned that U7100 has firmware. Does that mean that I cannot buy individually, that is has...

Ok. Start with u4700, then move on to u4600?

Ok great, on the 87. Yes I soldered u7100 from donor... Thanks!

No sign of liquid. came in with 5.10 V on PPDCIN Had a 1.ohm short on PP3V3R3V0_AON. Found shorts on u4600 and u4700. Replaced them and now have 2.588kohm on PP3V3R3V0_AON. Replaced ISL and had PP3V3R3V0_AON, but now its gone and I dont have anything on PPDCIN anymore either. PPDCIN -...

Ok, I hear ya . Yes, it booted once normally after "replaced parts, got Vcore". I thought it was fixed and put it in USC to get rid of flux. Then never booted again. This is when I found broken trace between C0890 to C1910. I have been checking for broken traces in the damaged area but...

New bios came from donor of same board. It should still work just for testing, shouldnt it? thanks again man . ????edit - when it first came in it did boot once oddly enough with chime and video then died and I lost Vcore. Replace parts, got Vcore then through in USC. Hasn't booted since...

USB mouse only lights when it is intially plugged in or unplugged. It never stays lit. l connected new internal KB to PRAM with no success. Only tried USB on the board, have not tried USB via I/O board...

Replaced SMC, only change is that I have 1.67V on the CPU instead of the previous 1.8V. LOL.

Hello - Tried new bios - no change 0 corrosion around U6100 All SPI Termination resistors measure correct value and have continuity to related components. Other things I have done - Reflowed SMC, ran good flux under PCH/CPU and I tried replacing U1950. Still no change. I also had to...

Hello - This board came in dead with liquid damage around clock area. I replaced U1900/Y1905 and surrounding components and now I have 1.8V on PPVCORE. However I don't get a chime or video or light on USB mouse. Also I do not have a scope so I cant measure frequencies sorry. Any help would be...

Thank you.

Okay, so replacing KB connector resolved the issue. Thanks! Quick question if you can. How does PP1V2_S5_SMC_VDDC work and how is it related to pulling PP3V42 down. In other words how did you know to check there?

Hi, the results I posted was with KB disconnected from trackpad... New trackpad and cable as well. Thanks!

Hi! I went along and did the cleanup under PCH/CPU and that resolved the turning on issue, but it is still shutting down at random times during boot. I have found that this happens when ANYTHING is plugged into the KB/TP connector. I have tried new cables and trackpads and keyboards. The...

Hi, SMC has already been changed from donor. Same issue present. I will report that pad "93" of U5000 is in very poor condition. Maybe this isn't making good connection with new SMC?? I do have 1.2 V on pp1v2_S5_SMC from C5011, 13. Have a good one.

Took PP1V2_S5_SMC_VDDC diode measurement @ C5010 and C5017 and got around .300 which was a bit lower than .510 that I get on a working board. Replaced those components and diode measurement was still at .300 on PP1V2_S5_SMC_VDDC. So I reflowed the SMC and diode measurement is now @ .475 on...

Will check into that. Thanks a lot man. Have a good night.

Liquid damage near SMC region and Q7010, U7090. C7092 area. No green light on this. PP3v42 - 2.936V DCIN - 15.4V PPBUS - 8.18V PP3V42 in diode is .303 SMC had some damage by C5010, C5017, C5002, C5007, C5008. Slight short in PP3V42? Thanks!

Ok , so I got it working.. . Just not sure what did it. I tried PRAM Reset as suggested when I came in this morning (Please not that U9701 is removed at this time) and I still did not get a response from the Muix to send LCD_BKLT_PWM. However I decided to put a second new U9701 on and I booted...

No liquid. Found that I am missing BKL_PWM. I have already replaced U9701 and R9704. Still have the same result. Most recently replaced U9600, also same result. SMC_LID is 3.38V. Thanks.