Rainbow 845 motherboard repair log

Rainbow 845 motherboard repair log  The value found VCORE playing as long as the right value of 21.478 should be over 30 as normal. Tell whether a short-circuit GD pole for measuring the tube and found that an under-barrel GD highly interlinked, to determine damage. Replacement After a good replacement, power-on. Measuring the memory voltage

Abit AN52S not boot repair 不指定

Abit AN52S not boot repair  This motherboard failure as a standby voltage lowerMeasured switch voltage of 1.9V A14 at pin 0.9V voltage lines run from the switch at W83304CG 35PIN to look for materials that enter the post-test W83304CG 41PIN (5V SB) is only 1 point a few volts, the normal should be 5V, because

HP NC6000 notebook will not turn on, how often crashes do?

The mission of the most depressed in Guangzhou is the bad books, and began to think of the water and collision-induced failures are my Psycholagny seems to come out, in JS, where is the power supply chip that had broken, HP NC6000 classic fault , from 260 yuan to 200 yuan fix counter-offer, I knew

【】 Nc6000 MAX1987 original case of cold solder joint repair!

Spent three years, nc6000, mercilessly thrown to the engine in the buses after the lid on the classic failure, manifested as, start charging lights, fans turn, 5 seconds after power outages,If you click on their handsKeyboardF12 to boot, can be used normally. However, there are always the classic black problems.Implementation of the first boot after

ASUS P4B533-X boot does not run in yards,

ASUS P4B533-X boot does not run in yards, ASUS P4B533-X boot does not run in yards, OSC light does not shine Southbridge fever after a hot startPower measurement PCI A14-to-ground 220 in Europe, all the AD-to-ground 1k, VDDQ-to-ground 220 in Europe, measuring USB-to-ground 660 Europe, 1, IDE port more than 1KStandby testing PCI A14 3.3vSouth

ASUS M2V-VM CPU power supply over current maintenance

ASUS M2V-VM CPU power supply over current maintenance Motherboard brand:ASUS Board Type:M2V-VM Symptom:CPUPower supply over-current protection, the very non-voltage of control of control voltage12V Maintenance process:First testCPUNo abnormal supply pipe resistance, look at the powerICFound near the small resistance problems, measured with an oscilloscopeCPUPower has not found an instant pulse waveform. Then removedCPUSupply all the

ASUS ASB100 critical test point diagram

ASUS ASB100 critical test point diagram ASB100 for the ASUS boot circuit-specific IC, the trigger circuit in the maintenance of ASUS common, the key test points are as follows: Keywords:ASUS ASB100 test points

ASROCK (ASRock) M266A maintenance log 不指定

ASROCK (ASRock) M266A maintenance log  Customers take for lack of color, direct power-on boot screen pale purple. Unplugging the power play three R G B color values of R lines and normal G value is infinite, infinity, illustrate this line are open (open circuit) B and the value of the normal Found problems running line.

Laptop: source circuit size

On general principles, circuit size laptops have similar source as shown above. TPS51020 is 3v3 and 5V power supply IC ago. IT8511 is SIO. A / D Dock In the power adapter plugged in VBAT is the battery power AC_BAT is feed for the whole circuit, it can be obtained from Adapter or Battery. * Operation: Power levels for IC

Southbridge signal power management described

PLTRST #O The total reset signal: PLTRST # is the Intel ® ICH9 always reset the whole platform (such as: I / O, BIOS chip, card, north bridge, etc.). During the power up and when S / W signal through the reset control register (I / O registers CF9h) to initialize a hard reset sequence PLTRST #

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