CompuPro Qume Disk Drives

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CompuPro Qume Disk Drives
Preliminary Information
Leak Risk Low
Batteries None
Mounting Technology Through Hole
Capacitor Types Aluminum Electrolytic
Destructive Entry No

A dual QumeTrack842 external floppy disk drive for CompuPro computers

Disassembly Notes

PSU PCB is bolted to chassis through externally heatsinked TO-3 transistors making it really annoying to remove because you must desolder them.

Original Parts

Basic PCB Name

Note model numbers and board revisions here

Capacitor Specifications and Footprint Information
RefDes Qty Capacitance Voltage Mount Diameter/Size Height Lead Spacing Temp Type Brand Series
C1, C2 2 4700 µF 50V Through Hole + N/C 25mm 62mm 12mm 85 °C Aluminum Electrolytic Nichicon
C4 1 15000 µF 16V Through Hole + N/C 25mm 62mm 12mm 85 °C Aluminum Electrolytic Nichicon
Other Active Components
RefDes Qty Package Type Model
U1, U2, U3 3 TO3 LM350

Replacement Parts

Basic PCB Name

Capacitors
RefDes Qty Compatible Part Number Order Links
C1, C2 2 50PK4700MEFC18X40 Digikey Mouser
C4 1 16PX15000MEFC18X35.5 / UVY1C153MHD DigiKey Mouser LCSC
Active Components
RefDes Qty Compatible Part Number Order Links
U1, U2, U3 3 LM350K STEEL/NOPB Digikey Mouser


If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.

Related Links

References