Netvista power Problem

[letnes]

I have a Netvista that will not stay on. When you turn it on it switches off after a few minutes. Sometimes it will boot all the way and stay on for an hour or so.

I have replaced the power supply, reseated all the stuff connected to the motherboard and still the same problem. The only way to get it to stay on is to remove the 12V power connector from the motherboard, then it will stay on for hours but the machine does not boot with this connection removed.

Thanks

 

[micker377]

How old is this unit? Did it work before? Do you have any way to check temperatures?

 

[garebo]

A netvista with a 12v connector cant be more than, say, 6 yrs old, perhaps less. They came with a pretty good stock hs\fan unit.

Best thing to do is disconnect any usb and pci items that you dont absolutely need, see if that helps.
Also, you could re-seat the cpu with fresh thermal grease.

Without further info it sounds like an overheating or power supply problem. But you have a new power supply on it so its not likely that.

But it could also be bad vid card or built in video, bad ram.
YOu can google memtest for free, and using one stick of ram at a time you can test your ram. Just to get it out of the way as a suspect.
Do you have another video card you can use? Are you using onboard video?



Good advice + great people = tek-tips

 

[rclarke250]

Look on the motherboard for swollen caps. there was a problem with some of the netvista models that had some bad caps in and is covered under an EC (engineering change.

 

[lockend]

Yes, I would agree to check the capacitors. We use a lot of old Netvista's at work (the white case ones), and many of them had to be replaced due to bad capacitors. Definitely something to check out.

-Dale
"There's no such thing as bad luck, just an absence of good luck.

 

[garebo]

You can go to badcaps.com for info on this. Basically you look at the tops of the caps, if they are rounded instead of flat then you have bad caps, or if the caps are pulled up and not fairly tight to the motherboard.Whistling noises and leakage are signs as well.


Good advice + great people = tek-tips

 

[DTSMAN]

We have 2 netvistas model 11u that we put into customer sites that wanted IBM and neither lasted a year. Now sitting in the bone yard for parts. Similar issues as yours. Never figured it out, and when we thought it was a hard drive issue, they did not take replacement hard drives easily with their original image on it.

Bo

Kentucky phone support-
"Mash the Kentrol key and hit scape."

 

[garebo]

Seems to me that i heard something about both Compaq and IBM desktops having a reputation over the years of suffering badly from overheating and thus blowing a lot of hard drives and such other items as fans, cpus, caps. Just the desktops and especially the smaller units, not the towers so much.



Good advice + great people = tek-tips

 

[poppaman]

There is definately an issue with some of the NetVista motherboards (model 6578-TAU is particularly affected) but the EC expores the end of this month (June, 2005) so get your request in NOW if you have any affected machines...

 

[letnes]

Poppaman,

Can you point me to more info about this problem and the EC.

 

[ceh4702]

We buy exclusively IBM products for PC's and for some servers at our Comm College and we have not had too many problems. From time to time IBM gets some flaky supplier and some things just do not work out well. Since we buy computers around 250 or so at a time we also keep a blanket insurance policy on all computers as they finish up their warranty. I guess not everyone insures all their hardware like w do.

IBM had some bad hard drives for a while which are sometimes referred to as Deathstars. i.e. Deskstars. They no longer actually make hard drives for PC's. In fact I think IBM farmed out their PC's to some Chinese company. Of course even at Dell over half the company is employed outside of the US. It is hard to say.

IBM is not the best company to deal with on a small scale for warranty problems. They have had some law suits that they always appeal and tie up in court for 5+ years and then they would require you to have the original receipt and any receipts you might have for replacement parts. IBM is typically more interested in larger business customers.


If you do not like my post feel free to point out your opinion or my errors.