Post originale di: altomic ,
I've done GPU reballing ith a hot air gun on G3 laptops. I bought a replacement G5 as my regular G5 died from faulty ram sockets. the new G5 had garbled graphics. slightly usable but garbled. Yesterday I decided to reflow it. followed all the fregac steps as above and as I have previously done with laptops (fixed 5 in the past). waited an hour then added thermal silverpaste. red LED came up!!! added more thermal paste, again 4th red LED. this morning I tried pmu reset and change battery and still red LED. I took the heatsink off and the little bit of plasticy stuff that goes betweeen the heatsink and the gpu and I flipped it over. replaced heatsink, and a touch more thermal paste and fired up the machine and it booted to GRAPHICAL PERFECTION!!!! very stoked with the outcome.