I've been using my pmg4 for a while, just recently I noticed that there is a red light located on the logic board on corner of processor heatsink and ram boards. this light is active during when the computer is on. the computer did not misbehave but is it trying to say something? is this normal operation?
Info:
Mac Pro, Mac OS X (10.7.2), MacBook Pro 13.3 | Logic Studio |
I was using my trusty powerbook 500 mhz and when i closed the screen while the machine was on, after @ 1/2 hour i opened the screen up and NOTHING!. i restarted and nothing again, the caps lock key will light up, so i am assuming the power supply is ok. No chime and black screen, any suggestions on what it might be...im thinking logic board, if so what ones will fit that model
View 8 Replies View Relatedso i've got a system with a fried c2d board. i can pick up a cd board for $150 plus shipping which is good for me. to find a comparable replacement, i'm looking at ~350 and i'm just not feelin that price as im on a budget.
i'm not concerned about the speed decrease as im just trying to get this thing rebuilt.
i understand that there are different heatsink assemblys..vertical vs horizontal. however, i do not know how to tell the difference and i am also unsure whether or not my c2d heatsink will work on this board i receive.
the logicboard possess a t7300 c2d and model # is 820-2279-a, it appears.
i cant find anything on that model, except for on ebay.
and i totally cant find the serial number on this macbook. under the battery on the tray has no serial number listed, and i've read through this documentation [URL]
I have a dual 2.0GHz G5 that's refusing to boot consistently/run consistently. Here are the symptoms:- Runs for inconsistent period of time; sometimes it hangs just after logging in, other times it hangs after an hour or so of backing up the boot drive (50-75% complete)- Fails to boot after hanging; sometimes it stops at the gray Apple screen without a wait icon, sometimes it stops at the same screen with wait icon, other times the screen stays black- Frequently will not boot into single-user mode- Frequently will not allow you into open-firmware
View 5 Replies View RelatedI've got a 20" 2.1GHz iMac G5 iSight on my bench that doesn't power up.
I've tracked down the issue to a grenaded IC on the logic board.
The IC is an 8 pin SOIC chip, to the right of the power connector, just above the ALS connector. It is labeled UE300.
If you know what this guy is, can send me a good picture of one, or can provide me with the numbers from the IC, I can get this mac back to life.
I just bought a new Logic Board for a 1.25Ghz eMac and I've put almost everything back together after installing it until I ran into a problem. The power button cable that runs from the power button on the casing into the logic board has no connector on the Logic Board itself, now I have an old logic board that whilst being broken has a connector on it but I really don't want to have to solder the connector on for fear of breaking the logic board.
View 3 Replies View RelatedI was attempting to replace the hard drive in my eMac, but for instructions I HAD to follow some darn take-apart guide that said pull out the connection for the power button cord from the logic board. I didn't know that it was SOLDERED in there, and now I can't complete putting my eMac back together without doing so.
Can this be fixed without having to send it to Apple? Does it HAVE to inolve soldering, or is there an alternative? Is there a way I can temporary have my eMac power on until I get the connector fixed?
I'm somewhat new to the forums, and found a really good deal for a brand new macbook air (rev.1). I'd like to know if it is possible to replace the logic board in my macbook air with a newer, nvidia-gfx based logic board. As in, will it fit, does the same power supply run it, same peripherals (airport, keyboard, etc) work/interface with it, etc?
View 5 Replies View RelatedAnyone know where I can get it cheap ?
View 24 Replies View RelatedI have a macbook pro 17" 2.4GHz (non unibody). I accidentally applied 220 VAC to DC adaptor terminals and burned the logic board (and also the fuse on the left I/O board).
There were no visible damage on the logic board so I assumed only power input stages could have burned and started to investigate. I removed the battery charger IC, some burned mosfets; and I connected the adaptor plus input to the output of the battery charger block. So the DC/DC converters are now powered from the adapter, as in normal operation. Only difference is that there is no battery or charger stuff.
Now, when I press the power button nothing happens. If I connect the adaptor while pressing the power button, hold it for a while, release it, and press it again, it powers up. (Is this MCEverything from hdd to dvd to fans powers up but not the LCD. Fans start and remain running at full speed. Harddisk powers up but there are no noticable reads. That is, no os boot attempted. The mbp draws around 1.5 A to 1.75 A at 18.5 VDC(not sure if it indicates anything).
I'll do whatever I can to fix my board. I have MSc in electronics, skilled technician friends, and access to lots of tools, parts, and measurement devices.
I just got a Dual 1 Ghz MDD. It's a big step up from my 500 Mhz Sawtooth!
The problem is that it (supposedly) needs a new logic board. I've been watching logic boards on ebay, but I'm not finding anything with matching part numbers. My logic board has the following numbers:
630-4373 EEHNNW
448F2
KD2370366NFGA
630-4269
I guess the important numbers are the 630-* numbers. Perhaps one it the
'as designed' rev part number, and one is the 'as manufactured' rev part number?
I have the dual 1 Ghz processors; would they work on a 1.25 Ghz logic board? Most of the boards I see on ebay are 820-1476-A, or 820-1308-A.
What's the difference between the 820- boards and the 630- boards?
I don't have a complete service file for the MDD; can anyone email a copy?
Anyway... I was planning on getting my hard drive replaced because it was making that weird noise I talked about and I still am... but. Something else happened to. My friends dog chewed my power cord (just a few bite marks) and it was enough to make the green like really dim so we unplugged it. Instead of trying to fix the cord... we just got a new one but the computer wont turn on!
The light does not turn red green or orange on the plug but the battery light blinks when I unplug the chord (the battery is dead.. all drained i mean).
Me and my mom took the computer to a store that does warranty repairs on both Macintoshes and Windows computers and they said they would replace whatever for free. Like the harddrive maybe the battery if that is what is wrong and the logic board. But well... we kind of never told them my friends dog ate my first power cord >>
I wanted to. but my mom and my friend said they wont replace it for free if we told. I sure hope there is no way they can find out of the 1000 for a new logic board is true. We dont even have that kind of money right now!
But do you think the couple seconds of not enough power from the chewed cord might have shorted out my psu or something?
Im just curious. I know my friend has a friend that took his laptop in for a similar problem... yesterday or the day before.
After my MacBook Pro 2.5's logic board failed( and was replaced under AppleCare) after owning my MBP for just 17 months, activity monitor often shows asl ( system log file) manager at about 100% CPU. Fans spin at 5000rpm. Never had this issue before the logic board replacement. Also, Safari 4.04 frequently crashes; never had this issue either before, either. Occasionally, after restarting my MBP, the Apple doesn't appear on my screen but instead I get image of a folder alternating with a question mark. When trying to use installation disk to start up, under 'select the system you want to use to start up', Mac OS 10.5.8( the OS that's on my hard drive, will not show at all...it's missing. After restarting several more times with installation disk OS 10.5.8 eventually appears as a selection. Why would these issues appear only after the LB was replaced. I suspect that the replacement logic board or its installation is not 100%. Something's not quite right there.
View 1 Replies View RelatedSome of you probably will remember my post a week ago, saying that my MBP DVD drive killed my OSX Installation DVD. here is the conclusion of it, I took it authorised service center here in North Thailand. Waited for a week they sad they will change DVD drive and today it finally arrived. Around 11am they called me and said dude, we changed the drive the problem is still there cant install system. Your "Logic Board' is screwed, you have to wait at least 1 week for a new one.
Now what is logic board? Is that main board? Is it possible for computer to still work with a broken mainboard? I mean I didnt damage it, I had kernell panic and tried to re-install OSX so how could that killed my MPB? I still could boot into disk utility and format the drive was just unable to copy files.To be honest my MBP is 3 months old, i took a good care of it. And I'm very very very dissapointed in apple computers now, expensive and damn un-reliable.
Would it be possible to get a logic board with a 1.33ghz or faster processor out of a 12.1" G4 and swap it in to a G3? Are the parts even compatible? I know from building engines that certain years and parts are interchangable but I don't know about computers.
View 5 Replies View RelatedWas watching a 720p HD movie on a plane. Movie starts to freeze up. I can move the mouse but the rest of the computer is unresponsive. I force shut down by holding the power button.
Upon restart, all seems well, I login but computer quickly becomes unresponsive again. I force shut down again.
Next restart is over 10 minutes. Gets to login screen but can't login.
I boot from install disk and run HD repair. It finds some problems and repairs them. Reboot. Same symptoms.
I decided it is the HD and archive and install. Install fails. I wipe the HD cleaned and reinstall osx.
All seems fine as I go through set up and login in. A few minutes later same unresponsiveness.
So finally I did what I shouldve done awhile ago which is swap my current hd with my old one. I do and the computer runs fine! I'm at my wits end.
Just so everyone knows, the day before all these symptoms started I swapped my stock 2x1gb ram for 2x4gb ram. I originally thought that was the problem but I've had my original ram in since I've been trying to diagnose and it's made no difference.
I have an A1260 that looks like it's undergoing the problems repaired by this program: [URL] However, I've had this thing apart, replaced the hard drive with an SSD, the optical drive bracket is very bent from when I replaced the optical drive, my display bezel is cracked in two places and held up with duct tape, and it generally looks like hell. Will they still repair the logic board despite all the other, ahem, modifications? I could probably put the original parts back in, but despite that it will be obvious I've taken it apart. It is and was out of warranty when I performed these. Should I take it to a retail store or just call Apple and ship it to them?
View 6 Replies View Relatedthread or youtube walkthrough for removing a G4 MDD dual 867 logic board? (including how to remove the CPU daughter card).I have the heat sink off and all my RAM and PCI cards out,.
View 5 Replies View RelatedI'm looking fore some help/opinions on a friends iBook G3 800/30GB/256MB/10.2.8the problem is- when you press the power button, it powers on and you hear the (all is ok) chime. now sometimes it will boot perfectly fine and others you get nothing, just a blank screen.Now i know these things were notorious for logic board failure, but could this just simply be the HD, and if it is, how easy is it to change.
View 2 Replies View RelatedHow do I fix it? I assume the Repair program is expired, so how would I go about fixing it myself?
View 14 Replies View RelatedI'm still working on this deal to buy a used 12" PB. The seller says that she just replaced the logic board, hard drive, and battery. Now, I see this as a negative. Obviously the computer was having problems, she spent a bunch of money fixing it, and is now selling it anyway. What do you think? Is it a negative that it had problems and needed to be fixed? Or is it a positive that it has a brand new logic board that will theoretically last longer than an original one?
View 7 Replies View RelatedI bought my first Mac (iBook) last December. However, it is now dead from logic board failure. I was looking at Macbooks but they are very expensive, which is why I bought the iBook in the first place. So now I'm looking at 15" PowerBook G4. My question is: If having a G4 proves too difficult in the next few years (PowerPC compatibility and speed), could I put a logic board from a 15" MBP in the PB?
View 5 Replies View RelatedI am thinking about purchasing this PowerBook and getting it fixed or reselling it. What do you think?
View 1 Replies View RelatedMy computer recently, today, got a problem where the monitor no longer works, and an external monitor doesn't work. Thought it was maybe this can't get out of sleep problem, but it's not.
A shut down and restart, battery removal, connect a another monitor does not do anything. It seems to work fine otherwise.
Took it in and they said the entire logic board had to be replaced, and would be $1,300. owwww.
Is this reasonable? Anyone have a cheaper way to go about this? This is a 2.4 MacBook Pro. Another option, I would hate to do without my computer for a length of time, but $1,300 is money I really don't have now.
I see in the Buyer's Guide another incarnation of the MacBook Pro is coming. Does that mean the price of my logic board would drop soon?
I have a Rev. A 1.83ghz MacBook which my partner uses. In the last six months we have had an increasing number of problems with it. First, there were the intermittent sleep problems: delay going to sleep, failing to wake. Then it killed three batteries consecutively before Apple replaced the sleep switch and power connector unit (thank heavens for AppleCare). That was back in July. Now the same problem has recurred: the battery is dead and fails to accept charge. Got a call from Apple yesterday to say that they've switched out the logic board and that the item is ready to collect.
We have eight months left on the AppleCare and what I want to know is:
1) What exactly can we expect from a logic board replacement? Do Apple really have a stockpile of 1.83ghz logic board's floating around in case someone needs a replacement or is there any chance of a processor upgrade with this repair?.............
I have this logic board listed on eBay, and a person has asked me about the bus speed. The logic board has already been parted out from the computer. How/where can I get this information?
View 1 Replies View RelatedAs the title implies, I've got 3 year old G5 iMac sitting as a paperweight at my desk. At least half that time ago the logic board died and I was quoted a repair bill of around $900. I couldn't go with it, but I couldn't decide what to do with it either. I now have to get rid of it and since I know that this model had lots of issues with logic boards I'm hoping some of you will have some good advice.
I want to swap motherboards from one machine with cpus attached to another machine.
Is it difficult?
I have a 2.66ghz case that got damaged and I want to put the upgraded processors/logic board in my case.
Would it be easier to swap cpus or logic boards with cpus?
How do I determine what logic board is in my machine, i.e. manufacture, ports , speeds etc.?
View 1 Replies View RelatedI aquired a MacBook from a good friend of mine who spilled some kind of liquid on this MacBook. It will not power on. I opened up the machine, and I dont see any kind of residue or any rusting, nothing, it looks immaculate. My question is, could it be the keyboard that short circuited? What are my options? Can I manually test the logic board, or cpu?
