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 Заголовок сообщения: 820-3332-A no internal video, External ok. No LCD_BKLT_EN
СообщениеДобавлено: 04 сен 2017 05:42 
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Зарегистрирован: 02 сен 2017 18:48
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Город: madrid
Sorry, this all in English. I would really appreciate if someone can help. I already posted my issue on english site,
but also want to see if someone here has any idea about how to fix my mac.

Hello, my name is Andrei and I hope someone can help me with my MBP

I only found two posts with this same problem like I have on the internet, but both were unresolved.

Initially this logic board had problem with charging circuit and one wire circuit. U7000 burned because of bad charger shorted/switched plus with minus. No liquid damage, all dry, all water stickers are ok.
ISL was replaced along with few sensing resistors. Charging problem is still there because no Sys_onewire coming on to U6900. Just to note that SMC_BC_ACOK_VCC is ok 3.4v. PPBUS G3H is ok 12.59v. No green light.
New u7000 getting pretty hot, around 50-60 celsius(not sure if this is ok)/
But at this point I am more concerned with something else...

Computer was running fine after that on the pre-charged battery and if magsafe is connected it does not lose charge as well. So it was totally usable for me until I waited for a new ISL.
I was using it for a few days, until I decided to look closer why am I missing Sys_onewire and also I was suspecting that u7000 may be faulty and new one just came in, I replaced it again.
Another U7000 is still getting hot. And of course no Sys_onewire. With some disappointment I decided to put everything away for a while and just installed logic board back into my mac's case and when I turned it on it chimed, booted, but this time nothing shows on the screen.No video, No backlite

I've spent the last three-four days digging into this problem with not much success.
It seems that macbook cannot "see" my LCD. I have 5v at L9000 and this is about that. Nothing is at PPVOUT_S0_LCDBKLT, because no LCD_BKLT_EN. And LCD_BKLT_EN comes from U9100 that I don't know how to test. SMC_LID is 3.4v and all the rest seem to be ok. I tried to inject 3.4v to pin 5 of Q9707 where LCD_BKLT_EN is missing, and I do get backlight on the screen, but still no video. All works on HDMI external monitor. If I go to display settings in OSx , there is no internal monitor at all.

I checked every resistor's value near J9000 and all caps for any shortage. All seems to be good. All inductors are dinging(I think Louis said it may not be very good idea to test high frequency coils like FL9000 with continuity test, but that's all I have right now). ASD gave some 19 errors , that it cannot switch graphics and also some MUX errors. ASD EFI shows no errors.
I have similar donor board that has faulty smc, that I can use for parts. Thinking about changing U9150, but not sure if this is the best thing to do now. Yes, I also have another cracked screen that I know is working, so the same behavior when I connect it. No internal video, no backlite, screen not recognized. I tried all close lid tricks, still no video. PRAM and SMC has been resetted few times, no change.

Below is my ASD OS test results(I AM INCLUDING ERRORS ONLY OTHERWISE IT'S TOO LONG FILE):


**** IMPORTANT: CONNECT POWER ADAPTER BEFORE STARTING TESTS! ****

================================================== ========
[09/02/17 17:37:35] * TESTING STARTED *

[09/02/17 17:38:04] Display: EDID Checksum Test (test #30) - EDID Checksum Test
- Calculate EDID checksum
[17:38:06] ERROR - 8000000E [Not Found] -- TEST FAILED

[09/02/17 17:38:13] Current (ID0R) -- DC In (test #1) - Sensor Reads Within Operating Range
- Check to ensure that sensor reads within operating range.
[17:38:14] ERROR -- 3 [Sensor reading below low point] -- TEST FAILED
[
[09/02/17 17:40:41] Current (IG0R) -- GPU Core: Must be in EG Mode-Sensor Reads Within Operating Range (test #1) - Must be in EG Mode-Sensor Reads Within Operating Range
- Check to ensure that sensor reads within operating range.
[17:40:42] ERROR -- 3 [Sensor reading below low point] -- TEST FAILED
[09/02/17 17:40:43] Current (IG3C) -- GPU FB: Must be in EG Mode-Sensor Reads Within Operating Range (test #1) - Must be in EG Mode-Sensor Reads Within Operating Range
- Check to ensure that sensor reads within operating range.
[17:40:44] ERROR -- 3 [Sensor reading below low point] -- TEST FAILED

[09/02/17 17:41:00] AirPort (test #41) - Wake on Wireless Internal Simulation Test
- The test verifies the interconnect between the wireless module and system using an internal simulation mode during a sleep/wake
[17:41:16] ERROR -- 20 [WakeOnWireless test failed, invalid wake event] -- TEST FAILED

[09/02/17 17:49:16] Product (test #14) - Sleep / Wake 30/60 Test
- Verifies that a unit can automatically sleep and wake using the OS sleepx tool with 30/60/1 settings.
[17:50:47] ERROR -- 11 [Invalid wake event] -- TEST FAILED

[09/02/17 17:50:48] Thunderbolt (test #2) - Thunderbolt Sleep Wake Test
- Verify Thunderbolt pci interface is maintained over sleep wake cycle.
[17:52:38] ERROR -- 3 [Error encountered on wake from sleep] -- TEST FAILED
[
[09/02/17 17:57:12] Video Controller Internal (test #40) - Gmux switch to IG and Verify
- test will switch display to IG and Verify
[17:57:18] ERROR -- 28 [Mux switching Failed...Didn't switch error] -- TEST FAILED
[09/02/17 17:57:18] Video Controller Internal (test #2) - OpenGL Point Test
- Render Points
[17:57:18] ERROR - 80000003 [Unsupported] -- TEST FAILED
[09/02/17 17:57:18] Video Controller Internal (test #3) - OpenGL Line Test
- Render Lines
[17:57:18] ERROR - 80000003 [Unsupported] -- TEST FAILED
[09/02/17 17:57:18] Video Controller Internal (test #4) - OpenGL Triangle Test
- Render Triangles
[17:57:18] ERROR - 80000003 [Unsupported] -- TEST FAILED
[09/02/17 17:57:18] Video Controller Internal (test #5) - OpenGL Quad Test
- Render Quads
[17:57:19] ERROR - 80000003 [Unsupported] -- TEST FAILED
[09/02/17 17:57:19] Video Controller Internal (test #7) - OpenGL Rectangle Test
- Render Rectangles
[17:57:19] ERROR - 80000003 [Unsupported] -- TEST FAILED
[09/02/17 17:57:19] Video Controller Internal (test #8) - OpenGL Cube Test
- Render Cubes
[17:57:19] ERROR - 80000003 [Unsupported] -- TEST FAILED
[09/02/17 17:57:19] Video Controller Internal (test #9) - OpenGL Cube with Fog Test
- Render Cube with Fog
[17:57:20] ERROR - 80000003 [Unsupported] -- TEST FAILED
[09/02/17 17:57:20] Video Controller Internal (test #10) - OpenGL Wireframe Model Test
- Render Wireframe Model
[17:57:20] ERROR - 80000003 [Unsupported] -- TEST FAILED
[09/02/17 17:57:20] Video Controller Internal (test #11) - OpenGL Solid Red Model Test
- Render Solid Red Model
[17:57:20] ERROR - 80000003 [Unsupported] -- TEST FAILED
[09/02/17 17:57:20] Video Controller Internal (test #12) - OpenGL Solid Red Model with Fog Test
- Render Solid Red Model with Fog
[17:57:20] ERROR - 80000003 [Unsupported] -- TEST FAILED
[09/02/17 17:57:20] Video Controller Internal (test #70) - Fragment Instruction Test
- Tests each instruction of the ARB fragment program instruction by doing calculation and comparing actual against expected
[17:57:21] ERROR - 80000003 [Unsupported] -- TEST FAILED
[
[09/02/17 18:42:13] * 19 TEST(S) FAILED * [Elapsed time = 01:04:37]


Sorry for a long post, if someone has something to suggest how to return my main monitor to working state I would really appreciate that.
Thank you,
Andrei


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 Заголовок сообщения: Re: 820-3332-A no internal video, External ok. No LCD_BKLT_E
СообщениеДобавлено: 06 сен 2017 02:08 
Не в сети

Зарегистрирован: 02 сен 2017 18:48
Сообщения: 2
Город: madrid
Hey guys, can anyone get some light on my problem?
Thank You very much!
Andrei


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