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Ok I have this old Packard Bell Legend 20cd which i broke. I broke the cmos battery off of it and it is irreplaceable but all of the other parts including the cpu still work. Amazingly today at a thrift store i found a Packard Bell Legend 10cd which looks just like my old 20cd for $2! This Legend 10cd works perfectly so I am afraid to mess with it. But, what I want to do is switch out it's 486 50mhz processor with the processor from the Legend 20cd. The processor is i believe a 66mhz pentium 1 which i would think will perform better. My dilema is will this switch out work? Will I cause damage to anything by doing this switch? Can this 486 mobo handle a pentium 1? The computers look nearly identical on the inside and outside, however the mobos have a few diferences like jumpers that one has and the other doesn't have.
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Hi,
You might find the link below usefull, it shows the motherboard layout detailing jumpers that must be set correctly before you switch processors, this motherboard can support up to a 486 DX4/100 chip, if you can find one.
http://www.megasat.ch/totalhardware/m/P-R/33546.htm
I hope this is of some help
Bob
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Yeah it helps but im still not sure about my pentium 1. I want to just test it. If I put it in the computer could it damage anything?
^(',')]}~~~:]>
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Um this is embarrasing. I just looked a little closer at the 2 cpus. The one in the legend 10cd is a 486sx2 and the one in the legend 20cd says 486dx2, but for some reason i remember it always saying it was a pentium whenever i turned it on. But, i guess they're definetly compatible though. So testing out the switch should cause no problems.
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Most 486 boards were physically incapable of taking a Pentium processor - different sockets (Socket 3 instead of Socket 5 or 7).
Changing 486 processors requires setting the appropriate dipswitch or jumper for the clock speed - similar to a Pentium board. It's all in the schematic linked by Bob.
Let us be thankful for the fools. But for them the rest of us could not succeed.
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Have you tried using an external battery on your legend 20CD (jumper 30 closed).
The external battery should be 3 volts, see link below for more info.
http://www.uktsupport.co.uk/pb/mb/450.htm
This might be easier than changing processors
Bob
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great link and all, but i think i will just sell the whole lot of the working legend 10cd and the legend 20cd as parts. Thanks for all the help everyone. It just usually ends up as everything perfect that i touch ends up completely nonworking. So i will let someone else break this thing.
^(',')]}~~~:]>
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That's the spirit.
Parts from a 486 are pretty much only good for other 486's - other than expansion cards, of course. Memory might be usable in some early Pents, drives - sure.
You'd likely gain a bit of knowledge from 'playing around' - for $2, that'd be a bargain.
Let us be thankful for the fools. But for them the rest of us could not succeed.
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Ohh I have gained plenty of knowledge. I am 15 and i have 7 pcs in my room. I have completely torn each and evryone of them apart only to put them back together while breaking 2 in the process. One of these was a completely working internet ready 500mhz laptop that i bought from a friend for $40. I am not fond of breaking my pcs and i seem to do it all too easily.
^(',')]}~~~:]>
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Well - the idea is to reassemble them and have them work afterwards - not a bad percentage, but keep trying ; )
Let us be thankful for the fools. But for them the rest of us could not succeed.
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the use of an anti-static wrist band is something i would recommend when doing any pc work. Its the most easy way of killing a machine by static charge shocking the ic boards. If you don't fell like buying one then make one. It makes a lot of sense
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Well, on the laptop funny thing i didn't know what a processor was or what it looked like so the very last time i was going to open this thing's case i saw this chip. And since i like to take things apart i decided to pop it with a screw driver. So i looked at it and i decided that it was pretty nifty then i placed back where it belonged all keyed up right and screwed into place and everything. I turn on the laptop. Nothing. I tip it upside down. Nothing. I get a little worried so i open the cover and i take a look at things. I decide that this chip thing must be in wrong so i rotate it and push. It doesnt fit but it must be right. Right? WRONG! I turn on the laptop and i begin to smell burning copper. My heart thumps in my chest as i realize what i have just done. Now the thing that ate me up inside wasn't the fact that i broke this computer it was that i destroyed my only chance at having a good computer ever. And a laptop too! I could have been independent and i could've had the option to sit on the couch and use a computer all day long. Sad sad days for me. Now i know about processors!
The next computer which i broke was a Packard Bell Legend 20cd. I had gotten it from a different friend in a trade for an old monitor. It was by this time that i actually knew a lot about computers and i easily could build them and install OS's. So i fooled around with this thing tweaking stuff. Until one day it wouldn't turn on. I tried the usuall, unplug everything from the mobo. Nothing. Adjust jumpers and switches. Nothing. Hey the cmos battery, and it turned on. So i plug everything back in. Nothing. Take stuff out one by one. Still Nothing. I know it must be this crappy cmos battery which is connected to a piece of metal soldered into the mobo. I pull and pry adjusting it any way that i can until i break this battery of completely, this mobo is now unusable. Stupid battery design just what to expect from anything with a Packard or a Bell in the name.
This all happened in a span of four months the time when i learned everything that i now know about computers. I know a lot now and i never do stupid stuff like this anymore.
Oh yeah, and how do you make an antistatic wristband? Personnally i've never used one and i usually dont even unplug my computers when i work on them! I have only gotten electricuted twice though. And both times it came very mildly from the underside of my modem. No biggy.
^(',')]}~~~:]>
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