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Released in Late 1993, the Macintosh Quadra 610 and Macintosh Centris 610 are two closely related personal computers that are a part of Apple Computer's Quadra and Centris series of Macintosh computers, respectively.

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Why won't the computer start?

no image start up on monitor

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Any sounds? Does the motherboard runs? Do you hear power supply unit working?
There may be many reasons:
- power supply is dead (if nothing happens after power-on)
- battery is dead
- chipset is dead
- memory is dead
- tarnished contacts (power is not supplied to motherboard at all, or not enough power for components)

opix.pl

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replace battery, and it does not work--- hear not working tune;

hit option command R and P along with start button, and does not work--- hear not working tune,

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also, green light comes on, but no screen picture, just the not working tune.

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In addition, the computer worked the last time I used it 15 years ago, that's why I thought replacing dead lithium ion batter would revive it, but no, just the I'm not working tune plays. In additon, I can hear the hard drive, and fans working.

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it is more possible that the video wire may be broken, or the VGA adapter is corrupted (try by AV cables if you connected it earlier via adapter). If not I would open the chassis and look for solder cracks. Ah sorry I didn't noticed you mentioned not working tune - focus on the hardware, skip video wires, I was wrong.

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The first thing I would do is install an new 3.6 volt 1/2 aa Lithium PRAM battery.

You can get it here: https://www.amazon.com/Brand-LS14250-Lit...

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good choice for 1st step - usually computers do not die if not used, but internal batteries runs out :)

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Denton Fender さん、ありがとうございました!
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