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do you have step by step procedure book?

contact through pm means?

my motherboard part number is 820-3787-a. 2 boards. in 1 power on cpu and graphic working but no display . no dim display either. In second board dim display. I am unable to locate the fault because i dont have much idea about the flow of signals. How complete dislpay works pls guide . If you...

hi, i want complete training of how the display section works. How much will it cost ?

Whenever i tried to reball cpu in macbook or air boards , i am a failure. . It bends up on both ends. I am using ZM-R5860N bga machine. If i reflow the CPU , it's fine but not sucessful with reballing. Pls guide me with some good idea. More than 10 boards are in my place for cpu reballing and...

pls reflow the south bridge.

pls can anyone provide technical information for 820-2337-a board. In all i have 4 boards. In 2 boards all lights, power supply , fans , graphic card fan gets on fine but on display. In two boards nothing get on. when i press the diag led switch one orange led blinks for once. Pls share the...

pls can anyone provide technical information for 820-2337-a board. In all i have 4 boards. In 2 boards all lights, power supply , fans , graphic card fan gets on fine but on display. In two boards nothing get on. when i press the diag led switch one orange led blinks for once. Pls share the...

I have 820-3787-A. When switched ON , there is no display , no light , but continous ram beeps. All voltages are normal . Ram voltage is also present. There are 32 rams. MEM_RESET_L voltage is 1.34v.Now what to test? And how to confirm which ram is bad.

Just now i am working on 820-3115. Sus o/p signal from pch is missing. S5_PWRGD is getting generated but PM_RSMRST_L is missing. Tracing the signal i find PM_SLP_SUS_L is missing. What should i check in PCH. ?

i am doing my work but brother i am not happy with what i am doing. I have outline knowledge about the signals in apple motherboard. Pls help me if you have complete signals processing from first to last signals. way back in my institute my teacher thought us about television circuit. I was...

i have given you exact reading of A 1502. Just now i have kept it aside. I will again take fresh complete reading of j8300 (all voltages) upto cpu. and let you know. Just now i am working on 820-3115. Sus o/p signal from pch is missing. S5_PWRGD is getting generated but PM_RSMRST_L is...

not solved a 1502

pls help me regarding the step by step signal processing in this motherboard

In my 820-3115 , S5_PWRGD is getting generated but PM_RSMRST_L is missing. Tracing the signal i find PM_SLP_SUS_L is missing. What should i check in PCH. ?

DP_INT_HPD --- 3v , EDP_BKLT_PWM---- 0v

j8300 voltages pin 1 0v 3-5v 4-5v 5-3.3v 6-3.3v 7-3.3v 8-0v 9-3.3v 10-0v 28,29,30 - 5v

EDP_PANEL_PWR_OR_PSR_EN --- 3v pin 28,29 30 - 5v

yes dear friend , i am getting dim display. I flashed a torch light at the back of display on apple logo. i see ? mark blinking.

DP_INT_HPD -- 3v LCD_PSR_EN --- 0v