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yes sr. is beeping whitout memory

green light, fan spin, PPBUS_G3H, 12.53 PP3V42, 3.4 vocre 1.02 mcp, 0.97 , ddr vt 0.71 no video no chime

Well I take one memory out upper first and I tap tap around the mobo boom frezze do funy stuff power off take lower memory out and install upper memory tap tap around no drama look ok I a take out memory and install 1 stick 4 gb upper slot no drama work thank you.... this was a MacBookPro9,2...

hi duke quit question when the ram slots go bad is physics or logic

Hello guy what kind of error is this one I got this laptop owner say sometime turn off so I check it it was dirty whit dust inside no water damage mark I clean the mobo I upgrade the hard drive put back and run normal for me but after the send a pic whit this error any idea i will put more...

I did pram reset ? and star work ok no lag everything work fine now thank you bro...

turn on login the os this one has the capitan and is fell some lag I wanna do hardware test can you help me whit that thank you this thing work's but no crime : )

I did other step I was checking the cpu vcore and I check some res around look ok next to it was u6100 I start check some res around and walla r6153 10k res was open I changed boom I have logo Cooll

I try mouse USB and yes I have light, but no crime no logo

Ok well I was able to fix tha problem the beep ram was the MEM_RESET_L 1k res was open. no more beep they pick up the memory. and now I have white screen no chime any help whit this I will start to check the cpu vcore rail to see if a got something

one beep every 5 seg until shut down or manual turn off, I changed the c6990 because look funny after that turn on the screen one time no crime after that same beep again I check the u6990 and got pin1 1.26v pin2 3.40v pin3 7.06 pin4 3.42 pin5 gnd pin6 18.73 pin7 nc pin8 18.73

1 = 111.5 k 2= pin 1 .850 pin 2 nc pin 3 .786 pin 4 nc memory beep with and without

red probe to ground .320 black probe to ground .770 both side l9695 pin1 .847 pin2 open pin3 .783 pin4 open y2815 red probe to ground

[SOLVED] 820-2879-B power on but just beep every 5 seg, no chime, video, green light Hi I got this one today water damage (cofe juice)who know, no green light, check I have short to ground in F7040 fuse out, apply 12v to short side, u7000 got hot remplace, short gone green light...

hi duke, if I have 0.875 V in that cap the gpu will be work ??? well this is a 820-2532A the tourn on you hear the chime and back light on, no logo

I changed the d4600 test same problem so I follow u step eliminate u4650 two little bridge and done work nice thank you for help duke

umm look like one diode is gone probable the d4600

j4600 pin 2,3 data pin 1.660 between both of them, Gnd to pin 2, 1.265 pin 3 1.268 positive to gnd pin 2 0.555 pin 3 0.548 bad one j4610 pin 2,3 data pin 0.921 between both of them, Gnd to pin 2, 0.524 pin 3 0.523 positive to gnd...

j4610 (good one) Diode mode measurement on both data pins of USB connector? = .931 j4600 (bad one) 1.630

j4610 (good one) Diode mode measurement on both data pins of USB connector? = .931 j4600 (bad one) 1.630