Leadtek K7S741MG-6L Maintenance Log 不指定
mahmoud
Leadtek K7S741MG-6L Maintenance Log 
Two plates the same board. The same fault!
The value of visual play there is no problem, plug in the power point switch is triggered, not power. For the K7 board, not a general power will first look at the board because this component ATTP1 【】 easily damaged and found that this board there is no such component.
The value of visual play there is no problem, plug in the power point switch is triggered, not power. For the K7 board, not a general power will first look at the board because this component ATTP1 【】 easily damaged and found that this board there is no such component.
Measuring hop cap at a voltage, there is no jump wrong.
Crystal feet have pressure measurement
The board for the SIS chipset, by the South Bridge boot.
Measurement of the needle there is a switch at 3.3V, ran a direct line of a switch needles and found that directly into the South Bridge. Switch pin at no problem, rerun the Green Line. Circle pin for the Green Line. We can clearly see a line out through the hole into the off-line to plate a positive
Green line circuit is as follows:
Run along the lines found in capacitors is that interlinked.
After a short after all blocked up
The existence of this line break. So pull directly from the capacitance at a line with the past
Then, after a good power-on trigger, turn the. Do not run code.
Doubt whether there is broken, because before then it was discovered that the Green Line, Green Line, the following signal lines are a little bit of black oxidation marks. Scratch volume a bit with a blade, there was indeed a line break in 【line is too thin, mobile macro photographed look at making sure no pictures】. As the line is too thin, then a little bit more near the components, so less directly from the component parts of fly line in the past
The other end of transistor B received a very
To a trigger, run code normally show
Boot to normal can be displayed, the fly line to fight plastic fixed.
A closer look will find that no sealant is to take the top of the front line, playing after the line is the glue to go from below. Because I fear the CPU power supply at the current will affect this signal, so when the sealant had left below.
2 the same as a failure of board
The other a Green Line connection
