July 9, 201411 yr Try looking for similar IC.. the UP series used has many 're-badged' versions which are the same.. just different name. *some info here -> http://forum.hwbot.org/showpost.php?p=316223&postcount=148 *1641 is 2x phase IC.. you modding VTT or something other than GPUv? Surely your PCB doesnt use 1641 for GPUv... ?!
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