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Mid Atlantic Soldering needed on my Xerox 6060 MB fuse.

Covers: New York, Pensylvania, New Jersey, Delaware, Virginia, Maryland and Washington DC.
S

solarpv

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There is a small soldered in fuse on my Xerox 6060 MB. It is used to make the keyboard work. I jumped it to see if that was the problem and it worked.
I tried to replace it myself and it did not work. Kept blowing the new fuse. Can anyone do it, or replace it with a fuse holder so fuses can be replaced? Thanks. I am in the Exton/ Downingtown/ Pottstown area.
 

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If you jumper it with a piece of wire and it is OK, but you replace the fuse and it blows, then one if two things is possible:

1. The keyboard is consuming too much current (higher than designed) and is blowing the correctly sized fuse.

2. You are replacing the fuse with one that is smaller (lower blowing current) than designed.

What sized fuse have you used?

You can measure the current flow by using a multimeter set to DC current in place of your piece of yellow wire.

 Dave
 
Hi, Thanks for the info. The fuse is blowing as I am soldering it, Probably from the heat from the soldering iron.
 
Ah,

You probably require a very small tip and a temperature controlled soldering iron. Hence the reason you are asking for help if you don't have the correct tools.

Are you using a heat shunt between the area you are trying to solder and the body of the fuse?

I find it helpful to cut and pre-tin the component (fuse in this case) beforehand, using a pair of needle-nosed pliers and an elastic band to keep them tight closed on the lead.

Then solder the leads one at a time onto the PCB using the pliers as a heatsink. Quickness is vital.

You may find that standing the fuse off the PCB (still using a heatsink on the leads) helps.

You can test the fuse (after soldering) using your multimeter.

Dave
 
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