标题: ga-8l533 no power (solved) [打印本页] 作者: 法赫米 时间: 2010-3-13 21:37 标题: ga-8l533 no power (solved) Visual values are no problem playing, plug in the power test card was found on the 3.3VSB standby light does not shine
In order to determine that is to generate 3.3VSB voltage components, a table pen then A14, a table pen test to 11173 feet. 11173 feet and the A14 was found attached to illustrate the feet 3.3VSB VCC switch to 1.5V SB VCC voltage components.
Test-retest 10842 feet and 11173 feet, similarities demonstrate that it is 5V SB over 1084 conversions 3.3V SB, then certainly 3.3V SB come from the 1084 conversion.
Under normal circumstances, the direct access 5VSB pin sub-10843 replaced 3.3V SB, measuring purple 5V SB with 10843 feet was found not directly linked to
Pin diagram found on the tube voltage electric measuring 4 feet sesame seeds (S) 5V
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Test-retest 3-pin (G) voltage is 5V, P-channel MOS control voltage until the output should be 0V. No wonder there is no standby voltage of 10843 feet, the original output of this tube did not
Prior to running lines of this MOS tube is then 393 of the G pole. So check the working conditions of 393. Measuring 393 positive input pin, the voltage of 0V
Test-retest output pin 5V, this is obviously and 393 works contrary. Under normal circumstances only the positive input is higher than when the reverse input, the output pin until the output voltage, suspected damage 393.
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Replacement of 393 and then measuring the forward voltage input pin, the voltage of 0V
