Question about Apple iMac G4 Desktop

3 Answers

IMac I purchased two 256mb modules because I was told by the seller that this would increase memory to a total of 512mb. (I'm starting to have my doubts about this!) I installed the first chip without any problem. The computer started up and ran well.  As was explained by the seller, the second chip was located underneath the processor. I installed the new chip (again a 256mb) and carefully replaced the processor. Now my computer will not compete the start up process. There is an initial starting sound, the orange light comes on, and that's where it stays. The green light on the start button does not appear. Have I damaged the processor in removal? I've double-checked all connections and they are solid. Is there some form of fuse in this system? HELP!

Posted by on

  • wolfandbunny Aug 24, 2008

    I should have added in my original note that I had removed the 256 module and replaced it with the original that came with the machine, hoping that would at least solve the problem.


    Well.....it didn't.

  • wolfandbunny Aug 24, 2008

    O.K., I should have added to the original statement above that I did switch the new 256 module out (located under the processor) and replace it with the original chip that came with the machine.


    There was no change in the start-up problem.

×

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Master:

    An expert who has achieved Level 3.

  • Master
  • 521 Answers

There is no something like fuses in the board.your chip and processor both are ok dont worry about that.just remove the chips and processor.and get it checked from where you have got the chip.as many times this happens when we insert the new chip this problem occurs.for a period of time.and then it disappears.just get it checked.as the chips and the processor are not that sensetive to be damaged in simple fixing.check all the standing copper pins.are they proper.thanks.rate the solution.

Posted on Aug 24, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 2,028 Answers

This sounds like a problem with the second memory chip. Remove it, and see if the machine starts correctly. If so, then put the first chip in under the processor, and try the startup. If it starts, then put the second chip in. If it doesn't start, then I'm going to say that you got a bad chip. It's not that uncommon to get a bad chip straight out of the box. I seem to get about one in every forty, here at my shop.

Posted on Aug 24, 2008

  • Ryan Rogers
    Ryan Rogers Aug 24, 2008

    Can you get to the bios?

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Apple Master
  • 13,433 Answers

There are no fuses. try removeing the one of the memorys and then both. insert the old memory and see if it starts up.

let me know how it goes.

Posted on Aug 24, 2008

  • 1 more comment 
  • Ekse Aug 24, 2008

    Remove and test, then remove another and test yes without memory at all, put the old back in. should start up. take the old out. put both new in.

  • Ekse Aug 24, 2008

    remove the new chips, start up without any memory, then insert the old memory. see if it starts up.

  • Ekse Aug 24, 2008

    did you take all the memory out and try starting up without any memory? after the startup has failed without any memory insert the old one only.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

How do I install memory on my 2010 iMac?


This is a basic 'DIY' answer.

Assuming your iMac is plugged into a properly grounded outlet ...

Tools:
  • Large, soft towel or such.
  • a Phillips screwdriver (size 1 or 2).
  • Compressed/canned air (optional)

  1. Shut down the iMac completely.
  2. Unplug all the accessories connected to the iMac, except power cord, and set them aside and out the way.
  3. Place a soft towel or such on a large (based on the size of your iMac) flat surface capable of supporting the weight of your iMac and preferably close to you iMac.
  4. Carefully place your iMac, screen side down, onto the soft towel.
  5. Touch the outside METAL chassis of the iMac to discharge any of your body's static electricity.
  6. UNPLUG the power cord from your iMac and set it away from the computer.
  7. Move the stand upwards so you can see the panel with the three phillips head screws.
  8. Carefully loosen each one, NOTE: they do not come out, they will stay in-place.
  9. Gently remove the panel, IF it does not come off easily DO NOT force it, try loosening the screws even more until the panel is easily removed.
  10. Spray the compressed air in to the exposed RAM area to blow away any built up dust.
  11. There should be two plastic "pull tabs" that are tucked in behind the RAM - NOTE how they are placed s you will need to put them back the way you found them - pull out the tabs so that you can easily grab them.

This model iMac has 4 memory slots. You likely have two memory slots filled and two that are empty. So this describes how to add two more memory modules to the two that you already have.

Note that there is a notch in the edge of the memory module that needs to match up with the 'bump' of the available memory slot inside the computer.

  1. Gently, but firmly slide the memory into the slot, making sure that the notch/bump line up.
  2. When the memory stops sliding easily, use one hand to hold the iMac steady and use the other hand to firmly push the memory securely into the slot.
  3. The memory should 'click' into place and be even with the other memory, if already installed.
  4. If it won't go in any further, DO NOT FORCE IT! (Don't used ANYTHING to 'pound' them into the slots!)
  5. Slide it back out and make sure the notch in the memory lines up with the bump inside the computer and try again.
  6. Repeat this with the second memory module.
  7. Slide the plastic tabs back in place the way that you found them.
  8. Replace the panel and gently tighten the screws, do not over tighten the screws, they just hold the panel in place.
  9. Carefully return your iMac to it's full and upright position.
  10. Connect the mouse & keyboard if they are not wireless.
  11. Plug the power cord bak into the iMac.
  12. Turn on your iMac.
  13. It should make it's normal startup "chime".

IF it beeps three times, then there is something wrong ... UNPLUG the power cord!

  • Either the memory isn't installed all the way, which you would have noticed as the panel would not fit correctly.
  • The wrong type (speed) of memory was installed. Confirm with the place of purchase that the memory is at least (1333 MHz PC3-10600 DDR3 SDRAM).

Nov 24, 2015 | Computers & Internet

1 Answer

I purchased an apple iMac a1085 online and it is locked what is the procedure to unlock it


are you saying the hard drive locked - or that you can not get past the startup screen because it is looking for a password?? ( that the seller neglected to give you )

Mar 11, 2014 | Computers & Internet

1 Answer

Black screen and repeating chime


I assume you have already tried resetting the parameter memory and power manager (see Apple support pages or your user manual if you need information on these procedures).
This is not a display problem. It could be bad memory, a power issue, or a logic board failure.
If you are getting a tone (not a chime) every 5 seconds, the logic board thinks no memory is installed. If you get three tones, a pause, then a repeat of the three tones, you have a bad memory module. This is not necessarily a defective part; you may have a bad connection between the memory module and its socket. This will also cause system crashes if you do get the computer to start. I've seen computers running with an improperly seated memory module (one or both ends not latched down), and they'll produce symptoms like this. So, the first thing to do is check your memory module(s). If you don't find any of them are improperly seated, remove and reinstall them just to make sure. (Notes: if there is dust around the memory, gently blow it away before removing the modules. Do not touch the chips or flat sides of the module. Handle them only by the ends. Failure to observe this precaution may cause damage to the memory by electrostatic discharge from your fingers. If you have more than one memory module installed, remove one and try it again. If the system works, you've found the bad memory module. If not, put it back in and remove the other one to see if the system starts.
If you can't isolate it to a bad memory module or failed memory slot (problems occur when a module is installed in the bad slot, but not otherwise), and you are able to remove the back of the iMac, then you can inspect the power supply and logic board for failed electrolytic capacitors. This has been an industry-wide problem since the move to lead-free circuit boards - higher soldering temperatures and a requirement to reduce the toxicity of component materials lead to capacitors burning out internally and venting. Vented capacitors are usually easy to spot - the tops will be domed or split, and sometimes black or brown material will have oozed out of cracks in the aluminum top.

show_picture.pl.jpgPicture credit: avforums.com

Selection criteria for a new capacitor are: same capacitance (Greek letter mu and F, looks somewhat like uF), same or higher voltage rating, same or higher maximum temperature rating, highest available endurance at rated temperature, and highest available ripple current rating. A capacitor with too low a ripple current rating will probably burn out prematurely. Also, select for low ESR (Equivalent Series Resistance) or low impedance if you have two parts that are otherwise equivalent on the specs. Oh, and be sure you check the physical size - diameter and height in millimeters. It's embarrassing and costly to order a part, then find it won't fit the space on the circuit board, or it's too tall to put the cover back on over it. Replacing parts on a multi-layer logic circuit board is not a task for beginners. Power supplies are usually single layer and somewhat easier to work on.

If you don't see any bad capacitors, then try disconnecting both the hard drive and the optical drive. If one of these is the problem, your iMac will start with a single normal chime, then the screen will turn gray with a flashing question mark in the middle (it's asking, "Where's my startup disk?"). If it still doesn't act normal, then you probably have a bad logic board (I recommend measuring power supply voltages to verify those are good before buying a replacement board).

May 23, 2013 | Computers & Internet

1 Answer

Why does my iMAC 4,2 reject blank DVD-Rs but plays burned DVDs?


Your machine has a DVD-rom drive, but not a DVD-burner. There is a difference.

Basically, you can read and play the DVD's, but the drive is not capable of burning them.

Nov 04, 2012 | Apple iMac G5 MA064LL/A Desktop

1 Answer

I have an imac intel 17" which is kernel


If someone has looked at this issue and determined it to be a logic board problem then the only solution is to replace the entire logic board.

You can purchase them on usedmac.com here for $289:
http://www.usedmac.com/catalog/product_info.php?cPath=34_160&products_id=2384&osCsid=555099ea1dd6e69fa573fbc345fbe149

Here are instructions on replacing the logic board yourself:
http://www.ifixit.com/Guide/Repair/Installing-iMac-G5-17-Inch-Model-A1058-Logic-Board/971/1

Feb 06, 2011 | Apple iMac 17" Desktop

1 Answer

Upgrading memory


The illistrated guide to installing ram in your IMAC is located here:
http://manuals.info.apple.com/en_US/iMac_Late2009_UG.pdf
Good luck!
PLEASE CLICK ON LOTS OF THUMBS UP FOR ME!!!
Thank you,
James.

Apr 23, 2010 | Apple iMac G4 Desktop

1 Answer

How to install additional memory on my 24" iMac.


maybe this will help.

http://www.youtube.com/watch?v=bZLewEVOuTw

Apr 18, 2010 | Apple 24" iMac Desktop

1 Answer

Cannot remove the memory modules fro 24" IMac by pulling on the tabs


To remove the memory modules, you need to unlock the memory modules first by pushing down the white tabs that are located at the end of the memory modules, THEN pull the memory modules out.

Please, report back if I can be of further assistance

My ID: alexocuello_

Mar 28, 2010 | Apple 24" iMac Desktop

1 Answer

How to install memory in G4 iMac 700mhz


Lie the imac down on a soft serface with screen facing down. At the bottom of the base they will be a round silver plate, you will have to undo the four screws holding it in place.

Dont unscrew any more, you will affect the computer cooling, and it may over heat.

The silver plate should come away, on the right you will see the memory slot, with your two thumbs pull the clips away and up at the same time, insert the memory module lining it up with the slot just off centre, gently press it down and it should click into place.

Feb 11, 2010 | Apple iMac G4 Desktop

1 Answer

HL-DT-ST DVDRW GA11N problem


With your Superdrive being dead out of the box, there is no need to be burdened with it.

Whenever you purchase an Apple Desktop or portable notebook, it automatically comes with 90 days phone support and 1 year of hardware support. So you can simply contact Applecare Support at 800-275-2273 (make sure you have your iMac serial# ready) to get that drive replaced under warranty of course.

But it may be even easier to take the iMac back in from where you purchased it and get that drive replaced or get a new iMac 21" from the store you purchased it from, unless it was via an online seller like apple.com direct, or any other Apple-authorized reseller online.

Considering your model is so new, I would recommend that course of action. Now if you are getting some functionality from that drive, then let me know and I will provide some troubleshooting procedures for you.

Regards,

-Mactechtrainer

Jan 30, 2010 | Apple iMac Z0CY Desktop

Not finding what you are looking for?
Apple iMac G4 Desktop Logo

73 people viewed this question

Ask a Question

Usually answered in minutes!

Top Apple Computers & Internet Experts

paulcarew

Level 3 Expert

2059 Answers

Martin Buck
Martin Buck

Level 2 Expert

81 Answers

MarkMAlford
MarkMAlford

Level 1 Expert

6 Answers

Are you an Apple Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...