Question about Gateway 503GR PC Desktop

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My Gateway 503 gr quit turning on. At first it chattered a little and then went dead. Now it won't even do that. The power supply has been replaced with a new one but no change. I need to see if the power switch is broken but where should I look next? The CMOS battery? HDD? A fuse?

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  • Vaio Tech
    Vaio Tech Oct 04, 2009

    LOOK THIS TYPE OF GATEWAY DESKTOP HAVE A NOW ISSUE OF THE MOTHERBOARD GOING BAD BECAUSE OF A 915 INTEL CHIPSET BE A PROBLEMATIC CHIPSET TRY TO REPLACE THE MOTHERBOARD WHID THE NEW CHIPSET EFFICIENT G31 G45 MOTHERBOARD AND YOU WILL HAVE PC FOR YEARS TO COME

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Check the condensators. If there are not any blown condensators or leakage, keep the video card (or at least the one on board if any) and remove all the other cards, also the memory. Check the CPU with a known good motherboard. If the CPU is ok begin by adding the memory, one bar at a time (you may alternate the slot also). If the computer do not start the motherboard is defective . If the computer starts but no sound is heard motherboard could be defective. Try to install a previously checked memory. If you do not get any signal the board is dead. If you get video signal, add one card at a time until you identify the bad component.

Posted on Oct 05, 2009

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My comp start but the os not show up the os on screen just tge gateway banner

Posted on Jul 25, 2010

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No power and won't boot suggest a power supply problem in the tower--it is listed as a desktop unit.

What is common on a lot of units (computer towers, TV sets, you name it) is the stand by power supply which is on 7/24 fails.

The most common reason is filter caps dry out because cheap ones and ones rated too low a voltage are used.

The beauty of this is if the power supply is removed and opened you will be able to SEE the bad ones.

I will attach a photo of bad caps--tops which should be perfectly flat are puffed up from a little to a lot and or brown material is seen at top and bottom of the cap.

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If bad caps are found you can usually buy a replacement supply at a reasonable price or replace the puffed up caps (seen as many as 8 bad in one computer tower).

This answer is based on the information you provided in your question and the answer from personal experience.

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Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

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Sprint6@zominternet.net



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Disconnect everything except for the power to the motherboard. If you turn on the computer and everything still turns off, then try another known working power supply. If the machine stays turned on then connect power to your drives one at a time with the computer off each time to see which drive is the culprit.

If everything still turns off then reseat the CPU and the memory and if it still turns off then that means the motherboard is bad and it would need to be replaced.


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I had the same problem. Turned out to be a bad power supply unit. Once it was replaced, machine was back to normal.

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