IMac CRT making POP sounds

my bondi blue iMac is making loud popping sounds, and the screen is flickering..
it is completely random, even though i am expecting it to do it, it always scares me everytime it does it...
is this thing going to explode, catch fire? it has never been opened, or anything...
please help, this was my first USB based Mac!!!

That sounds just like symptoms of Flyback Transformer (FBT) failure. A very common problem in early, tray-loading iMacs.
You can fix it yourself, if you are comfortable working around HIGH VOLTAGE. Look here - MacOpz Flyback Transformer repair.
It may be best to either a) connect an external monitor to the iMac, or b) take the hard drive out, as your data should still be safe.
Good luck,
Kyle-

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I would, but the warranty isn't transferable - my company was the entity that originally bought the AP. Plus it's about six years old, so I'm guessing it's about past the hardware support date anyway.
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2.16 iMac display making popping noise

Hey guys,
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use ASP and check the ST hard drive ie Seagate. If assembled in china and firmware version 7.01 ; then you best save your data asap because the hard drive is going to crash with no possibility of data recovery.

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HT1338 why does my imac keep making a noise every 30 seconds when I am not using it?

My iMac keeping making a sound (sort of a clicking sound) every 30 seconds when I am not using it. It is very annoying; is therre a way to stop it?

Bring it in to service, and ask them to tell you what the noise is. Sometimes it just is the optical drive realigning itself. It could be the sign of a dying hard drive. Only they can tell the difference.

I have a imac g3 dv se, snow and after about 10minutes of it booting it makes a popping sound and the turns off, then it wont turn back on for another 5-10 minutes

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Actually sounds like classic symptoms of a failing PAV (power-analog-video) on that model. Historically that's the weak spot in the G3 iMacs.
The lack of active cooling in the G3 iMac puts a lot of heat stress on this board and they eventually fail from overheating. Right now the board is still working as long as it's cool--it only fails when temps inside the computer rise.
About the only way to preserve the computer's life is to mount a 120mm fan directly on the case where the handle is--that's the exhaust port. The fan has to be positioned to PULL air out through that vent. It's an ugly solution to the eye but it has been done around here more than you would think.
Also make certain the bottom of the computer is not blocked. It the computer is sitting on a tablecloth or placemat, or there are loose papers on the desk under the case, it cannot get enough air into the bottom-mounted air intakes. Make/find some blocks to set the iMac a minimum of one inch (2.5CM) from the desk and move anything that can be "inhaled" from under the computer.
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I recently bought a (refurbished) September 2013 model imac 21.5". Looks great, but only one problem when I play any audio/ video, streamed or local, there come a clicking and popping sound from the right side only. Sounds like fireworks from a distance. No such noise through headphone. I tried all solutions suggested on different forums. No success. Can someone out there help, before I decide to take it to the apple store or return it?

By starting a new thread instead of re-viving an old one,
suggestions would be addressed to you directly...
However you may choose to discuss the matter with
an Apple Store specialist or Genius, and contact one
nearest your location for an appointment date/time
for someone to perform diagnostic testing. If the unit
is covered under AppleCare or a the complementary
warranty at that time, further suggestions for repair
if needed could be discussed &/or arranged.
See all worldwide telephone support numbers
Contact a mobile carrier
Find an Apple Authorized Service Provider
Visit an Apple Retail Store
For Apple authorized Sales, Service, Training, Certification
and Consulting, see these links to locate sources:
If you are located in the US, then this page may help:
https://locate.apple.com/ - (page may default to local)
If you are in another region or country, then this may:
https://locate.apple.com/country
In any event...
Good luck & happy computing!

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My brand new iPad Air 2 is making a random popping sound and there are crackling sounds when I have the earphones plugged in and browsing with no music. Guy at Apple store could not replicate it when I walked in. Is this normal?
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Hi, on the older white intel iMacs we use to open&close Midi. Sometimes it worked sometimes not.
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IMAC CRT serious firmware issues dude . . .

I was attempting to update my old iMAC CRT to OS 9, and was given the standard "firmware needs to be updated message". In trying to update the firmware, my screen went grey with the following message:
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http://www.avnr55.dsl.pipex.com/dotcom/panthereatsimac/tray.htm
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http://mrjcd.com/junk/CUDA.jpg
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Hello!
I work in graphic design and I have used macs for 20 years. I have always favoured Mac to the PC, however my last three (two at home and one at work) macs have been dreadful to work on, especially my latest Imac 27 inch. I'll try to keep this short, but my Imac keeps making a popcorn sound, and when I am using slightly larger files, or using more applications (photoshop, etc) the noise won't stop. Not only is this really anoying, but the perfomance of the machine is rubbish also.. its just seems to be "towing its nuts off" and making popcorn sounds every time I work on it.
Recently I have been freelancing and the place I'm working use PC's.. now.. I have never been a fan of PC's, but the PC at work cost around £600 and it totally blows my Apple out of the water (which cost me £1650). Has any one else had this popcorn sound and performance problems with their Imac? And if so is there a way to remedy the problem? Or this a production flaw? I have always been Hard Core Apple (no pun intended), but lately I am starting to feel a bit let down by these products.. Unfortunately my warranty has run out now and I may have to buy another if this can't be sorted. If my next machine doesnt work properly I will have to migrate to PC. I never thought I'd say that. .. but it's really winding me up paying a lot of money for Apple products that don't work right. Any advice, or feedback would be appreciated.
Thanks
Chris

Rafael,
I don't have any experience with sound editing, but I've found that Final Cut Express works just fine on my iMac G5 with 2 gigs of ram. I'm no pro, but for editing home movies shot with a Canon Optura 60 everything works great. I have just ordered an external firewire drive for backups and digital video storage, so that might let FCE run even better!
Have Fun,
Eric.
PS. The 20" screen looks great, and is highly recommended.

My 2009 iMac is making a very loud,rapid pulsating electronic noise. It stops temporarily after adjusting the screen brightness or using certain apps. But it always returns

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IMac CRT making POP sounds

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