Re: Capacitors very hot
ok, but where will I touch in the board to measure the voltage? I mean, I am saying the powers supplies are ok, so where in the board can I check the 12V rail?
Thanks,
tigreeireceltaid
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Last Activity: 02-05-2010, 12:39 PM
Joined: 01-31-2010
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Re: Capacitors very hot
Ok, I have a bit of news: I tried 2 different power supplies that are giving more than 12V in their computers (I checked voltages with HWMonitor and they were giving about 12.2V) but both gave only 11.25V in the motherboard that is perfomring badly. The question is: Is it possible that there is something in this board that is stopping full voltage going into the system? and more importantly, could this cause the CPU, RAM and VGA to perform at half of its potential?
Thanks you,Leave a comment:
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Re: Capacitors very hot
The brand of the other power supply is Win Power 600W.
I posted a picture of my board (not the best picture)
Could a power problem be causing the RAM, CPU and VGA to be working almost excactely at half the speed?Leave a comment:
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Re: Capacitors very hot
The brand is X-Power and the model is GTX light 480. The combined Power is 300W and 38Amps (in the 12V rails only).
If the capacitors are not leaking (aparently) and they are not running hot at the start of my PC, could they still be the fault?
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Re: Capacitors very hot
Hi,
I have a 480W Power supply with 36Amps divided equally in two 12V rails. I am not sure about replacing the capacitors because they are not hot when I start up the computer, but I still get the crappy performance, so I am wondering is there something else wrong...
I also tested the system with a 600W PSU with 38Ams divided in to two 12V rails (12V1-20Amps 120V2-18Amps) same crappy results!
Whjat is actually running hotter is the coils (cooper wired rings)...but not whenstarting up the PC...Leave a comment:
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Re: Capacitors very hot
I tested again this board against same CPU in adifferent board. I noticed that the Vcore voltage in my board fluctuated between 1.27 to 1.34 volts, but in the other board the volltage fluctuated between 1.33 and 1.41V , this may help to someone there find out what is the matter with my board.
Thanks,Leave a comment:
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Re: Capacitors very hot
Hi,
I cleaned the area around the mosfets. I noticed there was a little decoloration in the back of the board right behind mosfets. Any ideas what could be causing the overheating?
Thanks,Leave a comment:
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Re: Capacitors very hot
My motherboard is working but is just that is doing this at half speed, so I think there is nothing broken, but damaged instead. Is there any way I could test the capacitors, coils and mosfets?
Thanks,Last edited by tigreeireceltaid; 02-02-2010, 04:09 PM.Leave a comment:
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Re: Capacitors very hot
Hi,
The liquid looks like oxide, but it is only on this area of the board, all other mosfets are very-very clean. I have a Sapphire X1950Pro; I have attached to it a 6pin connector from the power supply to the back of the card. My PC worked fine, I have another PC with same CPU and similar card and they always performed almost the same, but now RAM, VGA, CPU everything is running just at half of speed (I am becnhmarking with Passmark 6.1 software). I did nothing to it, just started to perform worse and worse. Any more ideas?
I must add that...Last edited by tigreeireceltaid; 02-02-2010, 03:58 PM.Leave a comment:
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Re: Capacitors very hot
Hi,
My wife is away and took the camera with her, all I have left at home was a basic camera, apologies for the bad picture. On the mosfets there is code 72T02G which after googleing it I found their data sheet (attached to this post). the capacitors beside the mosfets look very clean, without any sings of being leaking, they are 16V 1600uF. I tried to find similar mosfets in ebay, but I am not sure what specs to look for; in the data sheet there is so much information! Any help will be much appreciated,
...
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Re: Capacitors very hot
Hi guys, thanks a lot for your help. I will get a good camera today and I will post pictures. The capacitor nearby do NOT show any sign of damage, and I can't see this liquid near them. Anyway, I will post pictures so that you guys can make a call on it. I will try to get the info that etnietering is looking for too.
I'll be back!
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Re: Capacitors very hot
Thanks all.
The picture is not my board, but the black squares on it are the same that started leaking in mine.
Can you please confirm the name of these black squares, and can some one point me to how to replace them, like where to buy them? what type are they,etc?
My board is an Asrock P4VM890 and I bought it new only 18 months ago....very short life time!
Do you think something else if failing and made these little things to start leaking? I
Thanks,Last edited by tigreeireceltaid; 02-01-2010, 04:51 PM.Leave a comment:
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Re: Capacitors very hot
Hi, Thanks for replies.
I am having difficulties to take a good picture. I noticed yesterday that there is some kind of brown liquid around few black squares (I think they're called vrm's) right beside the coils and the capacitors that are running hot. I have attached a picture that I found in this forum that shows these little black squares (mine aren't that bad, yet!)
Thanks for any help. I really want to know if this MoBo can be repaired or not....Leave a comment:
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Re: Capacitors very hot
the cooper wired rings I mentioned above are the toroidal core inductors od the motherboard (I juts found its proper name)Leave a comment:
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Re: Capacitors very hot
I forgot to mention that the capacitors and the cooper wired rings do not show any sign of damage. I have changed capacitor that area bout to pop, or the top is getting up, but these seem okLeave a comment:
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Capacitors very hot
Hi,
I have 4 capacitor near the CPU and in front of them there are 2 cooper wired rings getting really hot. In fact the cooper rings are hotter than the capacitors. I can touch the capacitors, 3 of the 4 are hot, but the cooper rings are so hot I can't touch them!. My PC is performing half of the speed that it used to (exactly half of the speed of the CPU RAM VGA etc.). I changed RAM, HDD, Power supply, and still perform half of what these components perform in my other motherboard. I also noticed that from some time my PC crashes when playing games for few hours. It happened to my now...
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