跳转到主内容

修复你的物品

维修的权力

商店

Model A1224 / Mid 2007 and Early 2008 / 2, 2.4, or 2.66 GHz Core 2 Duo processor

645 个问题 查看全部

No Power, #1 LED Stays lit, #'s 2&3 LED's flash

I have an Intel iMac 20", Model A1224, 1gb RAM, that one day just stopped turning on. I opened it up and checked the diagnostic LED's on the board. #1 stays lit. #2 and #3 blink on and off. #4 doesn't light up at all.

When I press the power button on the back of the black, plastic case, the internal fans will attempt to spin, but will not spin. (They rotate *maybe* one (1) degree out of the 360 degrees they would spin.) I can hear a high-pitched sound--kinda like a whirring sound--coming from the power supply when this occurs.

I have attempted to reset the SMC with, seemingly, no effect.

Any advice would be much appreciated.

已回答! View the answer 我也有这个问题

这是一个好问题吗?

得分 3

评论:

I have the same exact issue. Replaced the power supply and 2&3 are still flashing. Did you find out the problem?

完成的

添加一条评论

跳过升级

通过使用多合一工具包维修可以节省成本。

购买 iPhone 维修工具套装

跳过升级

通过使用多合一工具包维修可以节省成本。

购买 iPhone 维修工具套装

2个回答

已选择的解决方案

The blinking indicates a RAM problem. First reseat the RAM. If that fails try one stick at a time in each of the slots.

这个答案有帮助吗?

得分 2

评论:

Excellent low cost suggestion. +

完成的

添加一条评论

Seems that the power supply has gone. #1 LED indicates trickle power, it's always on when the computer is plugged in and supplies 5V to the logic board. Whe #2 and#3 are blinking it means that CPU and GPU can't be initialized. Usually a (don't know the english term for it, i try ;-)) power store diode is gone on the power supply. You can check it but be careful. Leave the machine unplugged for at least 24H cause the capacitors can store a lot of voltage.

Good luck.

这个答案有帮助吗?

得分 1

评论:

Installed a new Power Supply. #2 and #3 LED's are still blinking. Any other thoughts? Thanks.

完成的

I have the same problem. I also changed power supply and the problem still there. Any answer?

完成的

添加一条评论

添加你的答案

Plumberman010 将永远感激不已
浏览统计数据:

过去的24小时: 0

过去的7天: 3

过去的30天: 6

总计 2,909