Hello everyone,

Need advice on a newly acquired Dovetron MPC-1000R – dead on arrival. 

Cleaned it up cosmetically and found a few problems with the power supply – now working.

What fuses do I put in the back ? It came with a 500 mA SB for the loop, and this coincides with the schematics I have reviewed.

The other fuse holder came with a blown 100 mA fuse

I got it running and this fuse has 180 mA going thru it.

I checked a bunch of manuals and schematics, and got different ratings for this fuse (100 mA, 250 mA, 150 mA)

It has a bunch of cards, so it must be drawing more current.

It has: 

TSR-500D

BBP-100

TID-100

KOS100 MARK II

TMS100 Rev B

DAS-100

SSD100 solid state cross display

Nothing seems to be running hot, and all the boards are intact, nothing looks burnt.

I will increase the fuse rating  to 250 mA or 300 or 400 mA.  What is appropriate here ?

Or is something wrong, and it should be running under 100 mA ?  

Thanks, Fred Weksberg

VE3PIE / VE3WN