Replacing Mobo parts... need some help.

[hav0c]

Does anyone know of some sites that have tutorials or "how-to's" on doing mobo repair? Stuff like replacing a fuse or capacitor?

Thanks

[Cody]

Ish... I wouldn't reccommend doing anything like that to a MOBO... RMA is probably best...

Cody

[hav0c]

Well I would but I have 3 boards with the same exact problem, they are Super Socket 7 mobo with K6-2 450's in them. They are too old to be sent in for a RMA. So I figure fixing them myself is the way to go.

[Redwolf]

What's the problem?

[hav0c]

The fuse for the keyboard connector is blown which caused the keyboard not to work. I soldered a wire across the fuse to see if it would work and it did the keyboard now works, but I'm sure that the fuse has a purpose so I would like to replace it.

[SickPup404]

As long as you can find the replacement fuse and know how to desolder/solder, sounds like you're good to go.

[dunbar]

Little green resistor looking thing? The rating is marked on it (if it isn't obloterated).
Those green resistor looking fuse thingies are manufactured by LittelFuse, try Sager electronics, Newark Electronics, etc.

[dunbar]

BTW: hot plugging/unplugging is the usual cause for these fuses to blow (surge current due to capacitors on the keyboard PCboard), but no guarantee that is the only reason.
They could still blow because a keyboard draws too much current.... which might be a defective keyboard, or possibly a decent keyboard which draws more than the mobo designer knew about when they chose the fuse rating.... as in a keyboard which uses extra current for a mouse/glidepad interface. etc. Or possibly from plugging in a keyboard which was wet...... Lots of things to think about.

[hav0c]

Well I picked up these mobo and CPU's for free from where I work because they were going to trash them because of the keyboard error. I think these Mobo's use an older type of fuse called a Pico fuse. I did solder a piece of wire across the fuse and the keyboard worked, and that was the first time i ever soldered anything. I was just looking for some sites that might explain the de-soldering and soldering process.

[FDISK69]

Any Ideas?

[hav0c]

What you talkin bout Willis?

[John Prophet]

Keep the soldering iron hot and clean. The best solderers are TV repairmen..maybe could look at some TV repair sites. We had a TV repairman working part time for us for a while..he fixed about a dozen Phillips 107MB monitors that all had the same badly soldered joint fail. He simply resoldered the joint.
JP

[Etruscan]

Just keep on soldering away there; you'll get better; there is nothing like experience. Remember to use a little flux; heat the point to be soldered first; then apply the solder by touching the hot spot with it.

[fritz the cat]

You might try heading down to your local Radio Shack store, they carry the stuff and you might find a salesperson who can give you some pointers.

[goldenbuddha]

HOT and QUICK is the way I think is best =) try to stay on the board for as little time as possible...