Originally Posted by Bounkass
Give what up? A perfectly good conversation about YLoD? No.
Yes, twisting motherboard. Do you know what a most metallic does when it gets heated up? Exactly, it expands and contracts. Aka "thermal expansion". When a metallic plate (or in this case, a copper plate as a motherboard) gets partially heated (CPU and GPU area), the areas around the CPU and GPU don't heat up as much and obviously won't bend as much as the CPU and GPU areas. Causing the plate to bend and perhaps twist a little. This little, is enough to break the solder contacts underneath the the chips. This is what mostly causes the YLoD. That's what I ment with breaking. It has nothing to do with it being unleaded or not...
Really? I never knew it was that bad... It's either that, or you just hate Sony. 
Sony delivers good quality stuff as far as I know, and they don't have a good reputation for nothing I guess...
Well, I work in a electronics super store (something like Best Buy or Walmart, I think) in Holland, and we have the newer model TV's sorted make by make. Even worse, the make agents don't allow us to put them next to other brands... Since they are the ones who provide US with the TV's, we have to do what THEY say. Otherwise, no TV's, no profit, no jobs...
Good point. People shoulden't be so lazy and should research a little more before thinking stuff like that...
Exactly what I thought. Nothing to do with the unleaded solder...
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no, i meant giving up about the PSU stuff : ) anyway, as for the twisting... the motherboard does bend, but that's not the cause, or doing a reflow the bendind/twisting should worsen, shouldn't it? you heat the mobo way higher than how much the chips can. If that was the case, the chips would detach completely, as the central beads would not reache the motherboard bending. Unleaded solder is what has thermal expansion, and having the metals not mixed well they expand with different ratios, causing the bead to crack. imagine a small part of copper inside the stain, stain expand a lot less than copper. Now the copper gets heated, and it expands inside the bead... Got what i mean? : )