Humming Noise from Inverter Board

What are the last 3 characters of your serial number so can verify the machine and better help you? Is the screen flickering and humming or is the backlight constant and humming?

crwdns2934271:0Huk 11, 2011crwdnd2934271:0 ABCellars crwdne2934271:0

Serial Nr.: W865200XVGP

No screen flickering at all. Just this annoying humming noise.

crwdns2934271:0Huk 11, 2011crwdnd2934271:0 cyrillpfister crwdne2934271:0

Apple iMac "Core 2 Duo" 2.16 or 2.33 24-Inch Specs

Identifiers: Late 2006 - 24" - MA456LL - iMac6,1 - A1200 - 2111

crwdns2934271:0Huk 11, 2011crwdnd2934271:0 mayer crwdne2934271:0

I am having a hard time finding an inverter without the LCD.

crwdns2934271:0Huk 12, 2011crwdnd2934271:0 ABCellars crwdne2934271:0

More than likely the issue is form one of the transformers on the inverter board. they are most definitely replaceable however I would need to see the board to tell if a replacement transformer can be found.

I am also having no luck whatsoever finding a replacement inverter.

crwdns2934271:0Huk 12, 2011crwdnd2934271:0 Max crwdne2934271:0

crwdns2934275:03crwdne2934275:0

crwdns2934285:0crwdne2934285:0

crwdns2933315:03crwdne2933315:0

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mayer @mayer

crwdns2934065:0crwdne2934065:0: 688crwdns2936485:0crwdne2936485:0

MacHale Enterprises

3,6crwdns2936485:0crwdne2936485:0

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crwdns2931729:0crwdne2931729:0: Huk 13, 2011

crwdns2933897:0crwdne2933897:0

It looks like this board is sold integrated with the LCD. Extensive searching showed me no results for it being sold separately.

crwdns2934105:0crwdne2934105:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0

crwdns2889612:0crwdne2889612:0 3

crwdns2934285:0crwdne2934285:0

What are the last 3 characters of your serial number so can verify the machine and better help you? Is the screen flickering and humming or is the backlight constant and humming? — ABCellars
Serial Nr.: W865200XVGP

No screen flickering at all. Just this annoying humming noise. — cyrillpfister
Apple iMac "Core 2 Duo" 2.16 or 2.33 24-Inch Specs

Identifiers: Late 2006 - 24" - MA456LL - iMac6,1 - A1200 - 2111 — mayer
I am having a hard time finding an inverter without the LCD. — ABCellars
More than likely the issue is form one of the transformers on the inverter board. they are most definitely replaceable however I would need to see the board to tell if a replacement transformer can be found.

I am also having no luck whatsoever finding a replacement inverter. — Max

score 2 · Answer 1 · 2011-11-13T07:27:41-07:00

ABCellars @abcellars70961

crwdns2934065:0crwdne2934065:0: 26,3crwdns2936485:0crwdne2936485:0

Suo Motu LLC

152

71

50

crwdns2931729:0crwdne2931729:0: Huk 13, 2011

crwdns2933897:0crwdne2933897:0

Like mayer I've searched high and low for an inverter to be sold individually. I recommend you buy a cracked screen or a functioning entire unit off of eBay with a cracked screen to acquire the inverter. If you buy the entire unit you can sell the remaining parts to offset your cost. The LCDs for this I've seen are running between $500 - $800 USD. Here is the guide for replacing the inverter unit.

crwdns2934105:0crwdne2934105:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0

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score 2 · Answer 2 · 2011-11-13T20:38:15-07:00

oldturkey03 @oldturkey03

crwdns2934065:0crwdne2934065:0: 815,2crwdns2936485:0crwdne2936485:0

1,2crwdns2936485:0crwdne2936485:0

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crwdns2931729:0crwdne2931729:0: Huk 13, 2011

crwdns2933897:0crwdne2933897:0

My apologies to all you Mac experts, I do not mean to butt in. I just follow this question since I just recently "inherited one of these. I do not even try to pretend to be an expert on this. I did my research and this is what I came up with. The transformer that Max is referring to, might be what I attached as image 1 . Looks like there are about 7 of them. These are readily available at places like this. The panel is an LG Phillips TFT LM240WU2 the datasheet for the panel is available here and it does have the pinout for the inverter listed. And it looks like the board is available right here.

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+ Thank you oldturkey for your input and enlightenment. I stand corrected, properly.

crwdns2934271:0Huk 14, 2011crwdnd2934271:0 ABCellars crwdne2934271:0

Thank you ;-)

crwdns2934271:0Huk 14, 2011crwdnd2934271:0 oldturkey03 crwdne2934271:0

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iMac Intel 24" EMC 2111

Humming Noise from Inverter Board

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