Search results

Hi guys, 820-01700 was LD near left hinge (as seen normally) and it is missing pp3v3_s5 but line has a diode mode of 0.330 The issue seems identical to this thread: https://boards.rossmanngroup.com/threads/820-01700-20v-0-03-amps.61049/ Other voltages look good and board is very clean. Any...

Hi guys, little water damage at CD3217 closest to the hall sensor on the side where there are 2x CD3217s together. Cleaned and removed the chip to find out that 3rd ball from the top left (ball 48?) is short to ground (had to remove the other CD3217 to double check although I could also see...

Hi guys, I do not do iMacs (not very often at least) but this one belongs to a really nice customer and want to give it a try. High fan speed and the photo is from the temp sensors... I checked for missing thermal sensors (like Q5670 etc) but they are all there.. could it be U5650? Thanks...

Hi guys, nice to be here again, need to update myself to latest development and there is no other place for that. I have a 820-00850 that switches to 20V only when the battery is connected. It will then draw 0.8-0.9A (possibly fully charged batt) and will give PPVCC_S0_CPU 1V. The fans spin...

Hi guys, this one came with with liquid damage with lots of corrosion near the SMC but rest of the board seemed unaffected. After UC I found a couple of broken lines and jumped them. The system now gives green light, chimes, can see boot options with USB drive (the owner did not provide the...

Hi guys, This one came in from another service shop dead. They already UCed with generic chinese bath. I did once more with Crest to clear their flux (which was all over the place) and also ensure a better bath and after that I jumped a corroded line and a missing resistor BOTH next to the...

Hi guys, This one works normally without the battery and also works normally when the battery is connected. BUT when the battery is connected and you plugin the magsafe the green light trembles and switches off. You must remove the magsafe from the AC outlet to start it again because it has...

Hi guys, I got a similar issue with this thread: https://www.rossmanngroup.com/boards/forum/board-repair-troubleshooting/10654-820-2915-missing-lcd-power-enable This is is the hi-res LCD model which is missing LCD_PWR_EN. We have the following going on: 1) There is picture on external...

Hi guys, I know this is not Apple but I think duke handles those, too. This one turns on properly, enters the BIOS if necessary but can not see OS in any attached media. Can see there is a HDD or a USB connected but won't load the OS (Windows, Linux, whatnot) Legacy boot is enabled, secure...

Hi guys, This one looked like it took a dive in an orange juice bucket. I UC it and then there was no green light. I looked around and SMC_BC_ACOK was missing while PP3V42_3GH was ok. The problem was U7100 which I replaced and voila there is green light and the CPU gets hot. I now half...

[SOLVED]820-2914, green light ok, fans spin for 5secs, PPBUS_G3H 3.6 to 13.5V and loop. Hi guys, As per title, this one boot loops every few secs. Fans stay on for 4-5secs and loop. The PPBUS_G3H jumps from 3.4 to 13.6V when the fans are on. All voltages except PPVCORE_S0_AXG rise when the...

Hi guys, I have this mbpr15 here which randomly shuts down and I though Id run some diagnosics first. EFI test was passed with no errors and I am now running the OS part of the test - before the test was available and while it was looking for tests to run, another window was there titled TCON...

Hi guys, (as a sidenote to the admins, I created this thread again yesterday but although I could see it cause I saved the link or search for it, I could not find it in the timeline) Here is a copy-paste: "As per title this one crashes producing the attached image after maybe an hour of...

Hi guys, As per title this one crashes producing the attached image after maybe an hour of operation. No apparent faults. Any experience with this? (also why search produces no results by motherboard code or motherboard code+fault?) br, George

Hi ladies and gentlemen - its the macbook air week! Welcome to our show! This one turns on but no image (thus no backlight) - it powers on, green/orange light ok, CPU gets hot. PPHV_S0SW_LCDBKLT is 0V (no shorts to ground in the vicinity) and so is signal EDP_BKLT_EN to Q7707 (this comes from...

[SOLVED]820-3437 CPU gets hot (motherboard is powered) but not turning on, NO green light. Hi guys, Another adventure. This one was repaired by someone in the past - that' all I know about its history - also it seems it was LD at that time without serious signs of corrosion. I can measure...

Hi guys, this one was dead and came back to life after replacing C7771 but it now beeps when you press power button. It keeps beeping once every sec or so... I checked various memory modules on both slots and verified that PP1V5_S3_MEM_A and PP1V5_S3_MEM_B are present at 1.5V (C3110 and C3210)...

Hi guys, A friend tried to upgrade to SSD and he did something that killed this mbp, I noticed that PP3V3_S5 was missing and that U7200 gets really hot. I replaced u7200 and it gets hot again. There seems to be no short on that line and diode mode at L7220 measures 0.089. If I connect the...

Hi guys, This one was LD and after UC it came back to life when U7000 was replaced (there was a hole in it). The LVDS connector pins were re-soldered and remaining board checked for shorts before powering on. All clear. NOTE: touchpad not working - left disconnected. Now it starts, it chimes...

hi guys, so after UC this one it came back to life but: 1) the fan spins and stops two times and then the machine starts to boot. 2) there was no green/orange light and NO BACKLIGHT until I reconnected some broken lines/pads on the secondary I/O board - that brought back the backlight (???)...