fo2live

上U時發現... 係唔係水漬? 太潮濕??

wai-3-love

之前PCB太熱整到?

PS:我之前都有,用火酒抹下佢無左

fo2live

部文書機一路都好少用, 好少開, 係由4轉6打開時先發現...

cheungmanhoi

xfx 9600gt/9800gt???

ccw

From Microworks, they are coating to protect the circuit.

ccw

My Asus Xonar Essence ST\'s PCB.
Used for about one month, it showed some white stain at the back especially around the components parts.
Before I sold it, I approach Microworks for what they are, and an engine replied me as above.

They turned white probably because the coating is sticky(I remember they were in the first touch) and some dust are stuck on it.

sniperX

引用:

原帖由 fo2live 於 2010-7-31 13:04 發表
上U時發現... 係唔係水漬? 太潮濕??

松香乾燥後漬. pcb上錫用松香. 上錫後會有部分透明狀濃縮松香在pcb上. 到濃縮松香上液體完全輝發後. 就是pcb上白色的東西.

dom

引用:

原帖由 fo2live 於 2010-7-31 13:04 發表
上U時發現... 係唔係水漬? 太潮濕??

洗板水洗過 PCB 者

ccw

引用:

原帖由 sniperX 於 2010-7-31 14:37 發表


松香乾燥後漬. pcb上錫用松香. 上錫後會有部分透明狀濃縮松香在pcb上. 到濃縮松香上液體完全輝發後. 就是pcb上白色的東西.

明白了，唔係壞都好啲