05 開(kāi)機(jī)噪聲 (VGA CARD) A. VGA ON BOARD 1. 將ON BOARD VGA Disable,插上外接之PCI VGA CARD測(cè)試是否正常,若正常則為ON BOARD VGA之問(wèn)題 2. 檢查VGA Connector之焊錫面是否OPEN or SHORT 3. 檢查CHIP至VGA Connector之R, G, B,三原色,水平及垂直同步信號(hào)之線(xiàn)路及零件是否OPEN or SHORT or零件不良 4. 檢查CHIP至VGA之MEMORY (SDRAM or SGRAM) 的CLK是否正確及相關(guān)之線(xiàn)路,零件有無(wú)OPEN or SHORT 5. 檢查CHIP至VGA之MEMORY (SDRAM or SGRAM) 的PIN是否OPEN or SHORT 6. 檢查CHIP至VGA之MEMORY (SDRAM or SGRAM) 的線(xiàn)路及相關(guān)之零件是否OPEN or SHORT or零件不良 B. VGA CARD (PCI, AGP) 1. 檢查送給VGA CHIP之工作電壓是否正確 2. 檢查送給VGA CHIP之CLK頻率是否正確,相關(guān)之線(xiàn)路及零件是否OPEN or SHORT or零件不良 3. 參考A項(xiàng)之2~6點(diǎn)維修 4. 檢查金手指是否OPEN or SHORT本篇文章發(fā)表于www.intohard.com中國(guó)硬盤(pán)基地網(wǎng)