Heathkit RF-1U
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Heathkit RF-1U
| Preliminary Information | |
|---|---|
| Release Year | 1973? |
| Mounting Technology | Point to Point |
| Capacitor Types | Aluminum Electrolytic, Paper and foil, mica |
| Destructive Entry | No |
| Power Requirements | |
| Input Voltage | 240V 50Hz |
Known Issues
This unit was exhibiting mains voltage on the output jack when the unit was switched off.
Causes
- Across the line caps were shorted and the protective earth wire wasn't hooked up
- Low B+
Solutions
- Replaced the across the line caps and wired up the earth wire.
- Replaced the main filter can.
Disassembly Notes
This unit uses valve technology so contains high voltages 150V+
To remove the outer case two flat head screws are located on the back.
Original Parts
Whole unit
| RefDes | Qty | Capacitance | Voltage | Mount | Diameter/Size | Height | Lead Spacing | Temp | Type | Brand | Series |
|---|---|---|---|---|---|---|---|---|---|---|---|
| C17A, C17B, C17C | 3 | 20 µF | 350v | Twist mount | Multi section can | ||||||
| C19 | 1 | 0.05 uF | 250v | Axial | Tubular paper | ||||||
| C12 | 1 | 0.1 uF | 250v | Axial | Tubular paper |
Replacement Parts
Whole unit
| RefDes | Qty | Compatible Part Number | Order Links |
|---|---|---|---|
| C17 A,B,C | 3 | EGXF351ELL200MJ25S | EGXF351ELL200MJ25S Chemi-Con | Mouser United Kingdom |
| C19 | 1 | C420C473MAR5HA | C420C473MAR5HA KEMET | Mouser United Kingdom |
| C12 | 1 | 104MWR250K | 104MWR250K CDE / Illinois Capacitor | Mouser United Kingdom |
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.
Kits
- Digikey BOM: https://www.digikey.com/