Prostar 5800v

I have clients Prostar 5800v notebook, don't know age; Windows ME, P III FC-PGA. It started up to the Windows splash screen, then shut down. Restarted to the BIOS, shut down. Was getting very hot to touch, so decided it was overheating and shutting itself down. Removed heat sink and found old crusty thermal compound and a rectangular plastic clip floating loose under the fan/heat sink assembly. Removed proc, Cleaned/removed old thermal compound and replaced w/ new, reassembled using the plastic clip, now the machine won't start at all. Indicator lights show battery is charging so I know it's getting juice. What did I do wrong? I am concerned because the rectangular plastic clip is lame, doing almost nothing to hold the proc in the ZIF . The ZIF looks like a standard ZIF, but with no lever to lock it down that is usually found in desktops. After removing the heat sink/fan assembly, it took a bit of effort to pry the proc out, but it just falls back into place now - no resistance. The heat sink/fan assembly is what is really holding it in the socket. Did I screw it up and cause this thing to quit working alltogether?

 

You should never force a processor out of a ZIF connector. There is a reason why its called a Zero Insertion Force connector.

There should have been a screw with a half turn used to lock and unlock the ZIF connector (I wish I could find a picture of a mobile P III-M socket, but Google was not very helpful). Since you forced the processor out, its either:

1) not properly seated in the socket. Unlock and lock the connector screw.
2) forced the locking screw to come unlocked. Simply lock it again.

 

I cannot find pics on the web either. Here are pics of my socket - I cannot find a locking screw. Any ideas? Many thanks.

noguy
If noshow, click here: http://www.pantherpc.net/laptop_pics

 

Wow! It's a standard desktop Pentium III, though that's not a standard Socket 370.

There's gotta be a way to lock it, but I can't imagine how. If you take a look at the two plastic tabs, one says "SKT CLOSE" and the other says "SKT OPEN". Trying playing with those tabs and seeing if you can lock the thing.

EDIT: Hmm, there are no entries for this thing on Google, are you sure the spelling's right? "Prostar 5800v"?

 

Sorry. It's a 8500v. I'm not sure the plastic clip is placed correctly, but I can't see where else it might go. The 'open' and 'close' tabs are immoveable. I'm stumped.

N

 

Alright, I'm beginning to understand what's going on here; you've got a standard Pentium III mounted on an MMC2 adapter board. Usually you aren't supposed to take the processor off the board; you're supposed to replace the board itself, processor included.

Subsequently, the adapter board may not have been made such that you could easily replace the processor. But then again, they must have had to get the thing on there somehow. I'm pretty sure there's got to be a way to slide the whole plastic thing back and forth just as you would with a normal Socket 370; it's just a matter of how.

Try to take out the whole MMC2 board and then see if the socket lock will move.

 

The MMC2 board is buried. There's no way I can get it out. I'll have to call the pros. Thanx for your help.

N

 

noguy2000 when you had the pros look at this were they able to fix if for you. I have the same problem, but am unable to figure out how to lock the cpu back into place.

Thanks for any insights you have gotten on this.

Etycoon

 

Hi noguy2000,

I looked around a little more on the internet and found the answer on how to lock the cpu back into place when the cpu socket does not have a ZIF bar. You can find the info here - http://idforums.net/index.php?showtopic=28970&st=0&#entry918760

In short the answer is to put a flat head screwdriver into the slot on the side that says "Close" and then turn it. As you turn it this pushes the cpu into a locked position. To take the cpu out you would put the flat head screwdriver into the other side that says "Open" and then turn it. As you do this the cpu will move from one side to the other. Make sure you are holding down the cpu when you move it either way, "Close" or "Open"

Hope this helps everyone else that is looking for the answer to this crazy type of cpu socket for the pentium III (3) cpu with no ZIF bar.

Etycoon

 

Didn't have any pros look at it, but contacted Prostar directly. Here is the email from them:
"Dear Customer,
There is a metal lever that holds the CPU in the socket, not a plastic part. We no longer have parts for this model 8500V, so we cannot do repair service for this model anymore."

This guy is so wrong, if you look at the pics I posted, there is no metal lever. I've returned the machine to the client and told him it's just too old. OP seems to be on the correct trail as to how the proc locks in, but I'm not going to tear the machine apart if parts aren't available. Sorry I can't be of more help. Best of luck with yours.

N