i got a heat the only got two setting high and lo. when i am reflowing how long should i heat up the the ram chip and how should i reflow the chip on the bottom of the board
the ones on the bottom should heat up enough from the griddle and i wouldnt stay on them any longer then about 3 or 4 minutes i would work it around them all in circular motion around all 4 chips at the max 4 minutes over the whole area of the chips dont stay and do just one do all 4 together, get it too hot and the ram chips could come off use a thermal temp gun also to keep a eye on how hot your getting the board
EDIT: I have helped alot of people on here and they havent had any problems reflowing with my instructions, takes some common sence watch what your doing. Not resposible if you do it longer or hold it closer then i said, if you dont know something ask first. Its a chance everyone takes when re-flowing there own board.