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**Scenic** · 03-20-2008, 09:33 AM

Re: Did the mobo take the cpu with it?

Bestec is a known MoBo/Chipset/whatever killer from what i've read here on the forums

edit: if the mainboard you're talking about was on a bestec psu...
check for the chipset if it has tiny little holes or something unusual on there..
if it has... well .. you can put the board and the psu in the trash bin...

i would check the cpu and everything else that came from a bestec "powered" (or should i say "grilled"?!) psu on a known good board/psu for testing..

**starfury1** · 03-20-2008, 11:17 AM

Re: Did the mobo take the cpu with it?

Did I see somewhere here in the forums a warning against 'Bestec' P.S.'s?

probably more them one...think it was in dell posts

Edit:
Yeah as Scenic said they are known potential MB killers but if you read the post I suspect you knew that?
(I should have said that too..Thanks Scenic)

It would be helpful if you had posted more information like MB type series of caps etc

Normally first to go are VRM output caps (usually next to / around CPU) this will cause freezing reboots and possibly BSOD
(I am not 100% sure on this or the exact details of failure and probably somewhat depended on MB but yeah no boot is possible but a few other things could cause that too)

second most likely are VRM input caps
(I suspect if you see these fail the supply may be in way crap mode)

there are other faults that can happen and Badcaps can cause other damage, mostly it doesn't but its still very possible
Memory sticks have been known to be faulty after a badcap situation

This bring me to another good culprit for this type of failure...the supply its self....it quite possible a bad supply help in the demise of caps
Also it may be the real culprit (your case you Got MB problem to start with now)

So it is definitely in line to check its condition this will to some extent depends on what it is, to how likely it is to be faulty as well

Most generic supplies that come with cases are crap..so if its one of them ...give it a high status of being failed in some way as well.
(if its a cheapie bought job ditto)

Even some you pay fairly good money for can and do go fairly often.
(mostly cause of crap caps they put in or an abusive situation..IE they get too hot cause there's not enough ventilation around them or good airflow though them)

Normally if you find 1 or 2 popped caps you replace the lot in that section or if they are considered to be crap caps you are best advised to replace them all
(330uf 470uf and up)
It usually a case of if one or 2 go the other are probably on there way out too
(so a few months later you could be replacing 1 or 2 others...so get them all in one hit is best option)

You should only replace VRM caps with "Quality" Low ESR types
(see posts as to options and types, FAQ there is a list of good and Bad)

Posting Photos here is not too hard and welcomed
It is somewhat preferred as it keeps the post intact with them for reference
(but they will forever be enshrined here

)

Since forum mod Willawake went to all the trouble to put this fine post together,
I like to get "his" monies worth by posting it Inserting images in your post

I would suggest you read thorough the FAQ's section too ..plenty of stuff there.

if you know how to use a multimeter ands understand whats meant by voltage and continuity.

have a read though this post on VRM testing
It may save you from another fried CPU (thats if that is actually is blown)

just use the sites "Search" function(under the Badcaps.net Logo at the top) type in "VRM" "CPU" etc and look through the threads

In you specific case it may be more then just caps if its not booting

If you are not smelling the magic smoke

First thing is to switch psu out with a known working one as you may have a compound problem
I cant see 2 popped caps VRM output shutting the system down..it is possible and very likely if a cap has gone short but this is to some extent a rarer thing to happen
My old system was still running with all the VRM caps popped
this symptom could be a quirk of that particular MB ..its possible

Welcome to the forums

BTW not the guru here and may not be totally accurate to what happens
but the above I think is fairly close to what you will find

Cheers

**chipper** · 08-30-2008, 05:49 AM

Re: Did the mobo take the cpu with it?

I was just going to say that it is likely that you should not have used any old PSU to hook up a recapped mobo to a new CPU. Because when you hook the recapped mobo to the PSU , the PSU will suddenly be putting out more power to the mobo than what it has in the immediate past. That , can cause a problem right away.

Especially in a system that will not boot at all , I would use an order of repair and hook up. You have to confirm that the PSU is not overheating , or needs any caps itself before doing a recap job on anything that it will be hooked up to. Starting at the PSU , the average wattage today is 350watts output. If it has that , then open it first. Fix it if it has bad caps or whatever , then do the mobo caps , as it will definately make it so that the mobo will not have intermittent power surges or any instabilities to the new CPU you are installing.

Once confirmed not overheating , plug into the recapped mobo and start , check for heat while CPU fan is running. If running , with no abnormally high or "hot" areas , move to install video card , memory , hard drive & monitor , to get to bios screen or bootup. Then complete your installations as needed. Always pause between hook-ups of any kind to check for temperature changes or problems , shut down , hook next , check again , and so on , until you have video and some sort of screen that will confirm your operating system or the need thereof. It's a big mistake to just hook things up where they go , with unknown parts , and expect to see WinXP boot sequences and the desktop screen. Something as simple as the wrong memory can ruin the entire job , just from 1 failure attempt , because even 400mhz memory will fit into a mobo that can only run 266mhz or 333mhz memory chips. Always have the mobo specs before starting up to check the memory speed , not just size (IE:512mb)

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