thought i had these vias cracked but...

[FTM]

been praticeing on an old ps2 board with no probs, scrape the laquer off, red jelly flux & .4 mm solder, easy. tried on a v9 console & the solder will not take to the board, any ideas. using decent solder & flux, weller variable iron tip temp set to 240c

P.S found an excellent & cheap aid to help seeing vias, clear safety glasses with a x4 magnifying glass fastened to one lense. made these for less than a fiver & works spot on, even though they look stupid