Practising with the Achi IR6500

Sometimes I wonder why I bother. My first BGA removal with the IR6500 from a plasma control PCB went perfectly, but as it was a first go I didn't record it............ I then spent 2 days and 12 videos trying again with another PCB, at every attempt something daft went wrong. I managed to get this video tonight to show that it works just fine. The standard PTN 2 profile was fine for a smaller PCB is fine. Bottom heat at 120 and top at 220. For larger PCB's and chips with ground planes an increase is required. In my case to 160 bottom heat, 230 top heat for a QFP with ground plane, again not video's......... For this BGA a lower figure like the original 220 would have been OK but a raise in the lower heat to 150 perhaps. Note the melted plastic at the back but this is a scrap PCB and I wasn't going to have any more adhesive foil just fall off once up to temperature. The thermocouple needs to be mechanically coupled on some sort of arm so it can't move. Perhaps like the ERSA IR500. I will get something made up.