Hello everyone, friends! I came across a good challenge to read the entire 93-page topic in a couple of days. Finally, after reading, I may be able to uncover the mystery of the malfunction of PlayStation 3. You guys are all right at the same time, and no, including @skueept. These capacitors nec/tokins are prone to have a floating malfunction. They do not spoil the capacity or ESR so that it interferes with the game console, but the problem is definitely in them in most cases. How can this be you ask? indeed, given the conflicting data here, the conclusion is only that. I have been repairing various electronics for many years, but I come across these game consoles for the first time, I decided to buy a couple of broken ps3 (cechh08,dia-001) for recovery. In my practice, I met some types of components with floating faults, which restored it to one degree or another, if they were warmed, if they were pressed with a thin solid object in different places. Basically, these are capacitors of various types, coils, sometimes pwm controllers. capacitors tokens are rather complicated inside, I suppose over time from temperature stress, they have some kind of transitional connections inside them, so even a faulty capacitor is difficult to see on the oscilloscope, it can change its state from soldering, and save it for some time or condition, you can click on it, bend it slightly, and it will start to freak out. I suggest a reputable
@squeept to test this theory on his oscilloscope. Try to knock, crush in different places on these capacitors during operation, with your finger, pencil, with enthusiasm, in general. in this case, take the data with an oscilloscope at this moment, and I think you will understand why you cannot find a malfunction in these tokens, because inside they can lose contact from these influences, and this will affect the result of the output signal in dynamics. Probably this applies to those capacitors that have worked for a long time at elevated temperatures. And this is a rather unpleasant, difficult to diagnose, and contradictory, at first glance, situation. I also want to add that those who replaced the tokens with tantalum capacitors, and the game console didn't work for them, it's all about the quality of your soldering. (If the reason is not in BGA, and not in other lower tokens (around rsx and cell). The GPU requires a very large current, at the peaks it can easily be 10-12A. A very high-quality, thick soldered connection of both capacitors and the bridge, you need a lot of flux, and very good warming up, I recommend not using wires, but a nickel tape, or copper foil, and making an array between the wire and the wire. Better on each side of the board(2 rsx and 2 cell). Bad soldered joints increase the resistance, thus it is impossible to give enough food on GPU. High-quality soldering is very important in solving this problem. Regarding reballing, I'll tell you my opinion - it is extremely rare, and this applies to any technique from the BGA. Except for cases of liquid flooding, donation, shock, it is extremely rare, and in 90 % of cases is determined by the pressure of the board in different parts of the chip.Yes, tin solder is fragile, but factory problems rarely occur, usually when a little flux was applied to one of the balls at the factory. However, 10+ years is already a period, I met several laptops where this problem mainly affected processor sockets. On younger devices, there is almost no such problem if the cause is not factory. So, what I want to say, I have absolutely working ps3. I decided to do on it reballing rsx. I have all the necessary equipment for this infrared bottom and top. Just. on the work console. And you know what? after reballing it does not work. moment YLOD. my mistake is excluded, I changed a large number of chips at my station, which I did on my own, even successfully changed many processor sockets. I have no reason to believe that it could be anything other than tokens. Even if we assume that they do not spoil the contact with the capacitor plates, but the internal resistance of the bridge changes. This prevents the console from starting normally. I don't have as many tantalums as needed on donors, so I'm waiting for them to arrive. I will change them, and I'm sure it will 100% solve the situation. I recommend changing all tokens at once, and making large v-in and v-out bridges, 2 pieces on rsx and 2pcs on cell, better from nickel plates. you can buy on Aliexpress this nickel tape. these are used on 18650 batteries when they are connected. On the second prefix with YLOD, I did a reballing cell and rsx. manually put each ball, stencils have not arrived yet. did not help, instant YLOD on both consoles. There is no other reason to believe that these are not tokens. as soon as tantalums come to me, I will write you about the result. Thanks for attention, sorry for my english, guys)
p.s. good luck!
