There is also CS-FLUX which seems to be flux specially designed for BGA rework by a laptop repair workshop. a hp elitedesk 3 beeps 4 beeps Cloudray xTool D1 Pro Higher Accuracy Diode. Once your Mac starts up, check if the date and time are correct. Cloudray 40W Laserbox Pro CO2 Laser Cutting & Engraving Machine Shipping only. If your Mac normally chimes at startup, hold the keys until you hear a second chime. Amtech flux is very good for this job but quite expensive (on ebay most Amtech flux that is offered for under 25$ from China is low quality Chinese copy). Press the power button then immediately press and hold Command-Option-P-R. It's an Intel iris integrated graphics chip. It can occasionally boot and I see graphic glitches. It only appears to do this when going into a safe-sleep or hibernation. Also, I have tested the RAM, it reports its working fine. Ive reinstalled OS X and put a new hard drive in it. If you intent to do just a reflow you will definitelly need apropriate flux to be injected under the GPU. 3 beeps loop, no boot on MacBook Pro retina Unsolved I have a mbpr late 2013 (no battery) and it's beeping 3 times in a loop. 128keaton said: Hey guys, I have a Late 2011 13' MacBook Pro with a 500GB SSHD and 6GB of RAM (thankfully with integrated GFX) that beeps 3 times while sleeping. Either your computers memory was removed or something is interfering with the system checkup. If you hear this pattern of beeping, it means that the Mac could not find any RAM installed. A reflow (heating of the solder balls under the GPU at around 250 degrees) could fix the problem temporary but in order to have a permanent result you need to remove the GPU and replace the solder balls (reballing). 1 tone repeating every 5 seconds: When you start your Mac, it will automatically run system diagnostics.
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