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So shorted u7800 will short pp3v3_g3h? I have it on the donor board but i guess i need stencils to reball them?

Ok found the short: All small caps around U7800 C78B0/1/2/3/4/5/6/7/8/9 On the PP3v3_G3h_pmu_vvdmain Edit: ok the pp3v3_g3h is shorted now... strange...

Ok, no short on them... how ever on L7816/17 donor board show 80ohm and this one 55ohm L7806/7/8/9 shows 12ohm and 19ohm on donor board... dont think its critical...

Okay tried to solder in a mew chip today - dame behavior as with no chip... wonder if its my soldering or if the chip is not the right one (order online)... any thoughts?

Yes, ppbus_g3h fluctuate as well between 5and 12v And no the board does not turn on with battery and charger, how ever it goes to 20v on usb c and U7800 get very hot...

Ok, the flashing light is due to PP3V3_G3H_RTC that cicle around.. so no 3v3 on it... but it come and goes.. no short Mesured at R6979

Ok after another cleaning it look good, no more short.. however it still have the same behavior of not powering on, stays at 5v with out battery and the light on the board is flashing... no PP3v3_G3H is at 0 volts...

But there was the issue with pads off the caps from the first photo. They vas rusted/melted and i had to cut them and apply green mask Maybe i didnt clean well and there is coal left... will try to remove mask and clean it more... Any other ways to find the short between layers? I read that if...

Yes, but not only r5220 I removed everything... There is a short between layers

Hi @2informaticos, Yes, just took a look at it and also removed r5520 -> still short.. went ahead and removed c8150, c8164, c8161 and u8150... still short... so i presume somewhere in layers the issue is.... Should i inject the voltage?

Ps. Last time i was searching i was not able to find the board view... did a quick search now and found it 👏 Didnt had time to look at it yet, but here it is in case it might be useful:

Hi all, Have this board in with "no backlight" issue After inspecting i saw that it is a water damage and that most of the damage is around backlight circuit. Replaced affected components, repaired traces, try to power on - all work Power off the unit and went to tea break.. After coming...

The issue is still there... long story short: Was waiting for some parts for this machine to finish the repair, receive parts - put all back up, screw the back, plug the cable - no reaction Plug the amp meter and see the power cycling behavior: 5v-19v for a second - ps shut down - 5v etc...

Had some time to play a little more with this one today.. apparently the issue is related to the ssd itself.. any thoughts about how to check it?

Ok, thx!

Any chances its the board? Unfortunatly dont have any spare lcd to test it, will have to order one

By the way, the issue present only on the internal screen, on the external monitor everything is working as expected with no issue

Hi there, Have this board, on internal screen the graphics are slow(refresh rate) and all colors are faded out. What are the chances the issue is with the lcd? Or is it the board issue?

Yes, some was not needed, but the wire i used, is it too big? Should i replace it? (I am not sure what is the size of this one

I tried to remove the glued usb c chip, how ever i damaged a couple of traces under... will this fix work? Also there is no more heat coming from that area and the port now take only 0.24amps instead of 0.4amp I suppose to receive the new chip next week, and hopefully it will work after that..