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Hey guys,
i have a fully working 3115. only drama is fan goes 100% few seconds after turn on.
I checked fan connector and resistors around which all work measure fine.
When the machine is on and i test for voltages i probe smc_fan_0_tach and the fans go to normal speed. when i let go they ramp...
Hey guys. This one has no chime no boot. doesn't seem to have any liquid. all the voltages I have measured look good as I was probing around I found r7630 is at 6.2v seems a bit crazy! I measured and from u7600 pin 15 there is 6.2v on p1v0s0_vbst & p1v05s0_boot_rc
There is fan spin
light on...
Hey guys.
this one is fully working system but the trackpad fails - i tried a good working trackpad & keyboard it worked. After few restarts and sitting around for a bit NO trackpad again! It doesnt seem to have any corrosion oh water damage.
im not sure what the best way to diagnose these...
Hey guys i got one of these boards in. few patches of water damage. good thing is it is very recent. It is still booting but wanted to make sure and clean b0ard - i fluxed the affected areas and reflowed components. the only thing is c6499 is badly corroded and missing one end. I dont have any...
Hey guys,
very upset on this one. I checked fuse - got excited for the one time fuse was screwed so i thought oh wow - easy repair for once. changed fuse - next minute smoke coming out of lcd connector :(
what do you think caused it - should i try again with new fuse and connector?
Hey all - very small corrosion around u6990 and j5100.
Replaced u6990
i get no green light but pp3v42_g3h is present @ 3.43v
ppbus_g3h 8.24v
ppvrtc 3.34v
smc_bc_acok 3.3v
smc_reset_l 3.3v
pp5v_SUS 0v
pp5v_S5 0v
and also no s5_pwrgd
this one has been wd for few years back. it was apparantly cleaned with IPA. I inspected board everything looks good except C7900/7901 both had ends missing. The two ppbus_g3h probe points were absolutely eaten away. when i poked them they just crumbled away.
One of the sells is also swallon...
Strange. No sign of liquid or drop damage
Customer says it occassionally doesn't boot
Soemtimes don't wake up from sleep
occasionally wakes up to prohibiting sign.
I suspected ssd so i try to boot from external USB. It didn't work.
I tried another good working ssd it booted to osx
I tried...
Hey guys i got this a1502 customer says track pad stopped working so cable was changed - went away sometime later stopped working again - changed trackpad - again after sometime come back - not working again. So I think this is an intermittent issue and its come in my hands now.
Right now...
Hey guys I need help troubleshooting this one. Not sure where to start.
I got green light ppbus_g3h 8.6v pp3v42_g3h 3.4v
pp5v_S5 and pp3v3_s5 present also.
Hey all i got a mbp which has strange issue. it chimes but doesn't turn on.
no history - no sign of droppage or liquid.
When i hold power button i get chime. fan doesnt spin and cpu gets very hot.
When i disconnect battery and press power button i get no chime and no sign of power.
ppbus_g3h...
hey guys checked balls under memory slot nothing seem loose.
voltages:
everything is good with the exception of ppvcore_s0_axg 0v 0.004 res
under thermal pch is heating up like a mofo.
i dont know history doesnt seem to have any liquid?
this one come in for liquid spill but nothing on board got affected. turns out power on but lcd dead. ordered one supplier sent 2015 lcd. so i put another working lcd (belongs to my machine) boot up and everything working but serial is unavailable. I plugged in medusa and to read bios put it...
I absolutely hate these boards. Not sure where to start?
i have taken some voltages:
ppbus_g3h 8.6v
pp3v3_g3h 3.3v
pp3v3r3v0_aon 3.26v
ppvrtc_g3h 3.3v
pp5v_g3h_ldo 5v
pp3v3_s5 3.31v
pp5v1_s4sw 0v
pp1v8_s3 1.8v
pp1v5_s0 1.5v
pp1v2_s3 1.2v
pp1v05_sus 1.06v
ppvcc_s0_cpu 1.58v
inspected under...