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Modelo A1174 con 2 GHz Core Duo o Modelo A1207 con 2,16 o 2,33 GHz Core 2 Duo

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No Power after CPU upgrade

Hi!

I've updated old iMac cpu from Core Duo to Core 2 Duo.

Now iMac won't power on (power light waking for 5 seconds after it power goes off)

iMac doesn't power even if I tried with original cpu.

Model is iMac Early 2006 20 inch A1174.

Should logic board power on without case (like on desktop)?

Power supply looks OK (I've tried also ATX psu but same problem)

Battery changing tried also.

Some problem on logic board?

HELP!

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Examine the capacitors (cans) for corrosion, swelling and or leakage. What are the LEDs in the center showing on boot up? Use the reset and restart gray buttons on the logic board to the left of the LEDs to attempt restart.

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This is early 2006 model (no diagnostic leds) :( And capacitors is ok. Before CPU upgrade iMac worked well.

I've tried many cpus but no success. Only power light goes on and hdd starts (no startup chime) 5 seconds after iMac goes off.

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Please give the last four figures of your serial number, (located on the bottom of the stand).

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GU2P

EMC No.: 2105

iMac 20"/2.0GHZ/512MB/250GB/SD/AP/BT

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Apple iMac "Core Duo" 2.0 20-Inch Specs

Identifiers: Early 2006 - MA200LL - iMac4,1 - A1174 - 2105

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Here's the guide for the CPU upgrade but that does not appear to be your issue. Try disconnecting the hard drive cable and see if it will boot from the original system installation CD. http://www.maclife.com/article/create_up...

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