- Nov 1, 2013
- 4
- 0
- 10,510
Hi
My first post here, Looking for your help!
I have a Gigabyte MB GA MA78GM S2H ( Rev 1.1 ) and it seems dead with the regular symptoms.. No POST ( No Beep codes with the Speaker connected ) and no output from my VGA out.. All that happens is my CPU fan spins for about half a minute and shuts down.
I have taken the MB out of the case and connected the 24pin ATX supply, 4 pin CPU PS and kept only 1 ram chip in the slot.. disconnected all unnecessary peripherals and in order to rule out the power switch, would short the Power pins to start up.. But yet nothing!
I noticed on removal of CPU fan assembly that the CPU doesn't get warm at all even though the notorious NB ( AMD 780G) gets really hot as it normally does..
1) Is my CPU not receiving power? The Caps around the CPU look normal ( SS caps). Also the MOSFETS dont look harmed either.. Could they be damaged without any visible signs?
2) Is my NB the problem? I have a similar board ( Rev 1.0 ) and the NB gets as hot out there too.. So It seems normal..
3) Connected a PCI VGA ( Rage XL ) card for video and still not getting a video out.. I cant get into BIOS setting and configure the preference of video to PCI so i dunno if that's the problem..
4) Is the BIOS suspect? the Bios chip is hard soldered on the MB and so flashing ( by taking the chip out ) it is not an option ( MX-15G Bios ).. Any other ideas to this?
I have tried resetting the CMOS by removal of battery for 1 hr, resetting the jumper...
The MB looks normal with no sign of any burnt resistors, caps or chips.. I do not have any other testing equipment on me to check voltages.. Took off all the heatsinks and had a good look at it!
I can rule out the PSU, Did the PSU checks by shorting the green and Black wires, also it is working perfectly with another board.
Also the CPU ( Athlon 64 X2 4800+ ) is good..
I suspect MB and RAM but even if RAM is bad, i should get a long beep from POST on removal of it, which i didnt..
And, Can i damage a good CPU if i use it to test this board?
Also was considering a reflow by baking the board for about 4-5 mins at 200C as someone suggested online.. But saving that as the last straw!
I have seen breakthrough solutions here on this forum in the past and have used them to sort many previous issues, but now looking for a specific answer..
WHAT COULD HAVE GONE WRONG? IM SURE SOMEONE HERE WOULD HAVE A LEAD...
My first post here, Looking for your help!
I have a Gigabyte MB GA MA78GM S2H ( Rev 1.1 ) and it seems dead with the regular symptoms.. No POST ( No Beep codes with the Speaker connected ) and no output from my VGA out.. All that happens is my CPU fan spins for about half a minute and shuts down.
I have taken the MB out of the case and connected the 24pin ATX supply, 4 pin CPU PS and kept only 1 ram chip in the slot.. disconnected all unnecessary peripherals and in order to rule out the power switch, would short the Power pins to start up.. But yet nothing!
I noticed on removal of CPU fan assembly that the CPU doesn't get warm at all even though the notorious NB ( AMD 780G) gets really hot as it normally does..
1) Is my CPU not receiving power? The Caps around the CPU look normal ( SS caps). Also the MOSFETS dont look harmed either.. Could they be damaged without any visible signs?
2) Is my NB the problem? I have a similar board ( Rev 1.0 ) and the NB gets as hot out there too.. So It seems normal..
3) Connected a PCI VGA ( Rage XL ) card for video and still not getting a video out.. I cant get into BIOS setting and configure the preference of video to PCI so i dunno if that's the problem..
4) Is the BIOS suspect? the Bios chip is hard soldered on the MB and so flashing ( by taking the chip out ) it is not an option ( MX-15G Bios ).. Any other ideas to this?
I have tried resetting the CMOS by removal of battery for 1 hr, resetting the jumper...
The MB looks normal with no sign of any burnt resistors, caps or chips.. I do not have any other testing equipment on me to check voltages.. Took off all the heatsinks and had a good look at it!
I can rule out the PSU, Did the PSU checks by shorting the green and Black wires, also it is working perfectly with another board.
Also the CPU ( Athlon 64 X2 4800+ ) is good..
I suspect MB and RAM but even if RAM is bad, i should get a long beep from POST on removal of it, which i didnt..
And, Can i damage a good CPU if i use it to test this board?
Also was considering a reflow by baking the board for about 4-5 mins at 200C as someone suggested online.. But saving that as the last straw!
I have seen breakthrough solutions here on this forum in the past and have used them to sort many previous issues, but now looking for a specific answer..
WHAT COULD HAVE GONE WRONG? IM SURE SOMEONE HERE WOULD HAVE A LEAD...
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