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John

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John
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  • Hi! When you flex the screen back and forth, does it ever light up? The first thing I would check is the inverter cable on the side of the board. Most 2007 models have a 3-wall cable which is very thin, and it's important that it's firmly seated …
    in Dead Macbook A1181 (Late-2007)? Comment by John March 2014
  • Hi, and thanks for the post! Assuming the Mac Pro is a good machine, which is probably is given that it's able to get to the flashing folder, the issue becomes one of determining whether the problem is the optical drive, the DVD, or whether or not …
    in Mac Pro (2006) desktop with flashing folder Comment by John March 2014
  • Hi Rayan! Sorry for the delay. How many times does the light flash? The sleep light will flash 5 times on a MacBook Pro if the computer thinks it needs a new battery, or does not have a battery. It would seem odd that installing Mavericks would …
    in Macbook pro core 2 1 beep no boot Comment by John February 2014
  • Hello, and thanks for the post! So when you try to power on, you get nothing, no chime sound or light on the screen? I would remove the battery and try again. And then I would try again with a different AC adapter -- MacBook AC adapters are notor…
    in Dead Macbook A1181 (Late-2007)? Comment by John February 2014
  • Hello! Thanks for the post, and sorry for the delay. I'm assuming you're talking about a 15" aluminum Pro. Personally, with working boards going for $100-$150, I would just buy a new board rather than have someone repair one and hope they kn…
    in MacBood Pro Late 2008 Model GPU issue Comment by John January 2014
  • Hi! Thanks for the post! Do you mean that you just got the cable and are ready to do the backup, or you've already done the backup? I'll assume you just got the cable, in which case you need to connect the two together, and power on the iMac while…
    in Saving a failing iMac hard drive Comment by John December 2013
  • Hmmmm...I hate to say it, but if you've taken the battery out, and it beeps with one slot empty and also with the other slot empty, it's probably a bad board. If you send me the last 3 of the serial I can look up the particular laptop and see if I …
    in Macbook pro core 2 1 beep no boot Comment by John December 2013
  • Hi! Thanks for the post! 5 flashes usually means that the laptop is trying to tell you the battery is bad, but in that case the laptop will boot up normally after the light flashes, so I assume this is not your situation. It's also possible you ha…
    in Macbook pro core 2 1 beep no boot Comment by John December 2013
  • Unfortunately I think I'm out of ideas. I don't have your serial number so I can't look up your machine. You may just have to take it to Apple to have it reset -- most people with newer laptops who have this problem have mentioned having to take i…
    in Remove/reset open firmware password macbook pro core i5 Comment by John December 2013
  • Are you sure the RAM is good? You might want to try different RAM. You can also try it after adding RAM, and after removing RAM -- maybe you should try both, if one way does not work. If the PRAM eventually does reset, make sure to reset it 4 tim…
    in Remove/reset open firmware password macbook pro core i5 Comment by John December 2013
  • Hi! Thanks for the post! Did you watch this video of mine? https://www.youtube.com/watch?v=knv8UMTIIfQ It sounds like you have the procedure right, but you must reset the PRAM 4 times in a row (initial chime, plus 3 additional chimes) immediatel…
    in Remove/reset open firmware password macbook pro core i5 Comment by John December 2013
  • Wow, sorry to hear about the bad luck! So basically the laptop is completely dead and will not power up under any circumstance? Do you still get a green light on the AC adapter? Do you have another AC adapter to test with? Is your AC 65W? I ask…
    in pwrbook G4 1.67 boots, screen goes black, wiggle mouse, screen lights (10 sec) , repeat, repeat Comment by John December 2013
  • Hi! Thanks for the post. In many laptops (the iBook G4 1.33GHZ model comes to mind), that happens when you have a defective reed switch, which is a small sensor that determines when it is appropriate for the laptop to go to sleep. You can replace…
    in pwrbook G4 1.67 boots, screen goes black, wiggle mouse, screen lights (10 sec) , repeat, repeat Comment by John December 2013
  • Let me know the last 3 digits of the serial number in order to determine the exact iMac you have. As long as it's not a brand new iMac, you should still be able to use the procedure in the video at the top of this thread.
    in my imac apple is firmware locked,can you help please Comment by John December 2013
  • Sorry to hear that. You may just have logic board damage that goes beyond the extent of my abilities. There are people on eBay who will sell you a repair for $200-$300, if you want to go that route. It may be as simple as a trace on the logic boa…
    in Are there multipule power pads on a Mac book pro early 2011? Comment by John December 2013
  • I just checked the documentation for early 2011 13" MBP, and it appears there are power-on pads in an unusual location, which I will try to describe: Along the top edge of the board, maybe 2 inches right of the fan, is a screw. Below and less…
    in Are there multipule power pads on a Mac book pro early 2011? Comment by John November 2013
  • Thanks for the post! At the moment I don't have access to looking up the pads for that model, but I wanted to ask -- are you disconnecting the keyboard's ribbon cable before trying to jump it? Often if it's connected that will interfere with jumpi…
    in Are there multipule power pads on a Mac book pro early 2011? Comment by John November 2013
  • Hi Clem! That's great news! It makes sense that the DVDs would be bad. Since I didn't realize they were burned DVDs I could only assume that at least one of them was good, so that's why I suggested the hard drive route and was thinking the optica…
    in MacBook login bypass? Comment by John November 2013
  • I would reset the PRAM and PMU/SMC. It probably won't help, but it's good to get those out of the way so you know they aren't the issue. Occasionally I have found laptops that will reveal more boot devices after the resets have been done, so it's …
    in MacBook login bypass? Comment by John November 2013
  • Hi! I'm still confused as to whether you're talking about a PRAM password, or the usual Mac OS login prompt. If you have a PRAM password in place, the system will not let you wipe the drive, or boot to other volumes that would then allow you to wi…
    in MacBook login bypass? Comment by John November 2013
  • Hi! Thanks for the post! Have you tried the approach detailed in my video? Here's the link. Let me know if that works or not. This will disable the PRAM password, not the OS login. https://www.rdklinc.com/tutorials/knv8UMTIIfQ
    in MacBook login bypass? Comment by John November 2013
  • To save the pictures, you can always put the drive in an enclosure like one of these, and then connect it to another Mac via USB. Just make sure you get an enclosure that is IDE and not SATA. Plus, once you've salvaged the pictures, you can erase …
    in m5884 powerbook 4g does not turn on Comment by John October 2013
  • Hi! That's an odd case. Did you try powering it on when the PRAM battery was disconnected? You've probably got a bad board. I wish there was more I could say, but if the battery charges, that tells you the DC-in and AC adapter are good, and if i…
    in m5884 powerbook 4g does not turn on Comment by John October 2013
  • Hi! Thanks for the post! Unfortunately the MacBooks with Retina display do not use a standard 2.5" SSD hard drive, but instead have an SSD "module" that is more like a piece of RAM than a hard drive. Because of this, your hard driv…
    in Replacing SSD Comment by John September 2013
  • The padlock does confirm that you have a password in place. If you tried the procedure in the video and it didn't work, unfortunately I don't know what to say. You might want to check out this thread in the link below. From the thread, it appears…
    in my imac apple is firmware locked,can you help please Comment by John September 2013
  • From my perspective (not having the computer in front of me), I don't have confirmation that a PRAM lock is necessarily the issue. If you tried the PRAM/open firmware unlock procedure as shown in the video and it didn't help, it might not be a PRAM…
    in my imac apple is firmware locked,can you help please Comment by John September 2013
  • This may not work due to the password lock, but have you tried putting it in target mode so you can view the hard drive from another machine? Trying powering on holding down the "t" key. If you get a target mode symbol, connect your mach…
    in my imac apple is firmware locked,can you help please Comment by John September 2013
  • If you take out a memory module, it's the same as putting one in. Take one out, reset the PRAM 3 times, and you should be in good shape. If that doesn't work, put it back in and immediately reset it 3 times. It's the change in memory that matters…
    in my imac apple is firmware locked,can you help please Comment by John September 2013
  • Possibly, but it's too early to come to conclusions. It may be simply a problem with the OS on the drive, or with the drive itself, so the logical thing to try is to boot from a different drive that has a fresh copy of the OS. You can even take the…
    in Macbook display problem Comment by John September 2013
  • As for repair, like I said, the best way is to have Apple do a depot repair for around $300. They don't repair it -- they replace the board. Logic board repair is very hit or miss, and paying the average "repair guy" to fix your board is…
    in Macbook display problem Comment by John September 2013