PS/2 Model 30 286 keyboard fuse

[DonLafferty]

I just got one of these and when it posts it throws a 305 error which is a blown keyboard fuse.

I'm trying to find it but I'm just not sure I have. I did find a soldered-in component labeled F1 which seems like it but would they really solder one in?

If anyone knows I would be very appreciative.

P.S I searched for a thread but all the search words are too short.

 

[Makefile]

Indeed it is soldered in.

I used Littelfuse 0251005.NRT1L (FUSE BRD MNT 5A 125VAC/VDC AXIAL) which I believe is an exact match for the original.

 

[DonLafferty]

Thanks! I found one on Amazon. It's not cheap and doesn't ship all that fast. For now I'm just jumping it to make sure the machine works, and it does. Is there a BIOS like newer machines or does it need a setup disk?

 

[IBMMuseum]

Thanks! I found one on Amazon. It's not cheap and doesn't ship all that fast. For now I'm just jumping it to make sure the machine works, and it does. Is there a BIOS like newer machines or does it need a setup disk?

The ISA PS/2s (model numbers below 50) use a "Starter Diskette": https://www.ardent-tool.com/8530/Planar_286.html

 

[IBMMuseum]

We should also start identifying the fuse value on the component list at the 'Ardent-Tool' as well. That is the go-to site for information on PS/2s and other IBM series. If you are interested, we have a Model 25 and 30 group on Facebook: https://www.facebook.com/groups/model25and30

 

[DonLafferty]

Thanks! I joined and posted but of course the post is awaiting moderation.

 

[IBMMuseum]

Thanks! I joined and posted but of course the post is awaiting moderation.

Approved!

 

[Makefile]

Thanks! I found one on Amazon. It's not cheap and doesn't ship all that fast. For now I'm just jumping it to make sure the machine works, and it does. Is there a BIOS like newer machines or does it need a setup disk?

Should be about $1 apiece on digikey or mouser