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Foxconn MCP73M02H1 making continuous beeping,

Ok so today my comp decided to randomly **** out on me. Did a quick bluescreen with some text but blacked out to fast to read. Upon reboot al was well, started winsome normally and the problem report from my crash poped up after loging onto windows. Mentioned an issue with memory, ran diagnostic tool and it ran to about 3% an screen went black again. Had to pull the lug because the pc wasn't responding as it should have. Upon the 2nd restart it began beeping continuously with a pause between each. Beeps were rather long, each one the same length. I took out the ram an tryed rebooting with no ram and it beeped warning it couldn't access any memory. I cleaned the ram, reinserted correctly, powered on and the same beeps as if there were no ram. The part that I'm confused about is that when I unplug the psu from the PWR2 connection the beeping stops. Is this meaning my CPU has fried and needs replaced?is it actually my ram that is the problem? I'm still pretty noob to diagnosing probls with POST boot operations and bios codes and need to get my comp working again asap while not wasting too much money on parts to test ie; new ram and CPU. Any help would be extremely appreciated. Thanks!

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  • chrsamburn May 01, 2010

    So I picked up some new ram, exact same beep code. Beep lasts about 2 seconds then a 2 second pause, rinse repeat continuously untill powered off. Maybe my mobo ram slots went bad? Never fryed anything nor overheated. Do ram slots just die like that or is it something else. I've replaced ram, new ram in both slots, swaped psu even tho the one I had still works great, changed graphis card back to origonal, nothing stopped the beeping other than me unpluging the pwr2 connection that powers the CPU. All I know for sure is it's not booting past post and the beeping remains the same no matter what I try >.< any ideas before I break down and take it in to the local shop?

  • chrsamburn May 02, 2010

    I checked the board over for any malformities, none found so I decided on takin it to the shop up the road because the issue is beyond by capability of pinpointing, I'm prayin it's not the mobo or slots that are fried but my gut feeling is telling me I'm gonna be buying a new board in the near future lol. Well thank you for the advice and insights to other theories of what's going on. Time to leave it to the shop.

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Ok,whew! I finally figured out what was wrong with my MCP73M02H1 motherboard.
First, the problem. I have a HP A6403w pavilion desktop with the above mentioned motherboard. When booting the computer, it would start up, flash the lights on the keyboard but would not show the bios screen. There would be no screen activity, harddrive activity, no mouse and the keyboard would not show any activity when I pressed the caplock or numlock. There was also no beep from the motherboard.
I tried changing the ram (DDR2) with some spares that I knew were good. I tried changing the CPU to a known good one as well with no success. I pulled the motherboard and inspected it for any deformities, blown capacitors, anything out of the ordinary. I replaced a capacitor by the upper expansion slot just because I didn't like the way it looked. It had some crust around the top that looked like it might have been leaking but again, this was not the problem.
After looking on the web for quite some time, I came across a video on Youtube.com where they were repairing a HP laptop with a problem with the video card coming loose from the motherboard due to overheating. The computer I was working on did have alot of dirt and dust accumulated in it which I had cleaned out before starting to work on it. I thought, what the heck, and I did the same thing to the motherboard and WALLA! It starting working like new again!
Start by removing the motherboard following all the precautions to reduce the amount of static as much as possible. Ground yourself to the case and try not to do this over a carpeted floor.
In the center of the motherboard, you will see the cooler with the Foxconn logo on it. You have to remove this to get to the video chip connected to the main board. On the back of the motherboard you will see where the plastic locks go through the board. Squeeze the tabs together and pull the pins out and remove the cooler.
Clean the old heat transfer paste off of the video chip and the bottom of the metal cooler. You will need some new thermal grease prior to reassembling the cooler.
I highly recommend 'Artic Silver 5' which you can purchase from Radio Shack for around 10 bucks.
Next, you will need a pencil torch and some metal foil. If you have a steady hand, you can do this without the foil but I recommend you use the foil.
Lay the motherboard down flat on a stable table with the processor and video chip face up. Take your foil and cut a piece around 3 inches square. In the center of this, cut a square out the size of the video chip. Lay the cut out square around the video chip and lay the rest over the components around the chip. Using the pencil torch, heat the video chip around the outer edges being careful not to heat directly over the center chip and don't hold it over an area for too long. All you want to do is heat the chip enough to resolder it to the motherboard again. The recommended temperature is from 200-210 degrees F. or you can crack the chip making it totally worthless. It doesn't take long to heat it up.
After you have heated it for around 10-15 seconds, remove the heat and allow the chip to cool for about 5 minutes. Apply the new paste to the center of the metal cooler and just a light film will do. The stuff is heavy and sticky so a little bit is all we need.
Reinstall everything and see if your monitor starts working again.
Hint, take a picture of where everything connects to before you remove it. That way you have it all put back where it goes!
If it works, you did it right and that was your problem. If it doesn't you can try the proceedure again or you have something else wrong with your motherboard.
Hopefully this helps someone.

Posted on Nov 07, 2011

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Hi,
Sounds seriously like ram is gone.
Do this - remove all the ram - and - all the cards you don't have to have to make the pc work- - like a video card if you have one -
remove them but write down which order and which area things come out of.

one stick of ram at a time - take an eraser and clean the ram where the copper or ends are. one stick at a time - put one in and boot the pc.
then -- put each card in after this. If you don't use the telephone modem card I would leave it out.

Posted on May 01, 2010

Testimonial: "Tryed the eraser method to clean the copper on the ram but had no success, going to purchase some small ram to test with, hopefully that fixes it"

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I suggest you go to a local computer shop and get a cheap stick of the ram that is compatible with your PC. You don't need anything big for the testing process. Cheap RAM typically means low MBs. Try to find something that is PC2-5300 128 MB or 256 MB.

Posted on May 01, 2010

Testimonial: "Thanks for the tip, I'll go grab a cheap stick to test the memory issues with and see if that solves the issue. Also thanks for the speedy reply "

  • madhatter639
    madhatter639 May 02, 2010

    The beep-codes vary from one computer to the next. It all depends on how old the computer is and what BIOS chip it has....... Keeping it short, it sounds like you'll need to replace the motherboard. Yes, the RAM slots can "just go out". Typically, it's not actually the slot that's gone out, it's a major component connected to the slot that goes bad, causing the slot(s) to malfunction. Look at the capacitors on your motherboard. Do any of them look bulged and\or leaking? If so, then that could be your problem. Capacitors are like batteries, they hold a charge and discharge it at certain times. If they are leaking, then treat it like a leaking battery and don't get the **** on your skin. If you know electronics, then you can try replacing the capacitors - if that appears to be your issue. I've replaced some capacitors and it resolved all of the problems I was having.

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Solved.

Posted on Nov 05, 2010

  • UART Nov 05, 2010

    Dude, the problem isn't the RAM, but your mobo dumped on you however its not her fault. The REAL problem is that "Bestec" power supply that is sending intermittent spikes' to the motherboard and caused it 'partially' die. This is why you can still get your beep code but nothing else.



    Bestec pwrSups were always blowing up boards before they eventually go out themselves, thus lowering the prices on the eMachines that housed these things. Replace mobo AND power supply, check RAM and Processor. Done.

  • madhatter639
    madhatter639 Nov 05, 2010

    Uhhhhhh, where does this person list anything about Bestec or eMachine in their summary of their problems. If its there I must be overlooking it. You are right though about the power supplies and the whole issue with eMachine. Although, there was another factor in a lot of the eMachines that had boards that just out of nowhere died out. It has to do with the nVidia Chipset. I believe that there is a class action law-suit against them right now for all the computers over the last 4 years or so that have died out due to malfunctioning nVidia components - mainly the integrated video chips and chipsets.

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