27-3V07 PSU
27-3V07 PSU
| Preliminary Information | |
|---|---|
| Leak Risk | Medium |
| Batteries | None |
| Mounting Technology | Through Hole |
| Capacitor Types | Aluminum Electrolytic, Ceramic |
| Destructive Entry | No |
This power supply is from a generic portable PC chassis that had branding from a computer shop but no visible manufacturer information. The system had a late SMD style AMD 386 motherboard installed in it.
Known Issues
Sparking Sound and Fish Smell
- Leaking cap(possibly from C8) fluid boiling from shorted traces
-
Leak from capacitor mounted above caused a short on two traces on the bottom causing charring and audible sounds
Solutions
- Clean & recap
Disassembly Notes
PSU is attached with ISA style card edge connector
Original Parts
Main PSU Board
31-1032
Fuse: 250V 6.3A
| RefDes | Qty | Capacitance | Voltage | Mount | Diameter/Size | Pitch | Temp | Type | Brand | Series |
|---|---|---|---|---|---|---|---|---|---|---|
| C35, C36 | 2 | 680uF | 200V | Through Hole | 30mm | 10mm | 85C | Electrolytic | Nichicon | CE |
| C4, C31, C32 | 3 | 470uF | 16V | Through Hole | 10mm | 85C | Electrolytic | Nichicon | M | |
| C28, C24 | 2 | 470uF | 35V | Through Hole | 10mm | 85C | Electrolytic | Nichicon | M | |
| C21, C18 | 2 | 100uF | 160V | Through Hole | 16mm | 85C | Electrolytic | Nichicon | M | |
| C11 | 1 | 1000uF | 16V | Through Hole | 10mm | 105C | Electrolytic | Nichicon | PL(M) | |
| C8 | 1 | 6800uF | 10V | Through Hole | 16mm | 105C | Electrolytic | Nichicon | PL(M) | |
| C6 | 1 | 2200uF | 6,3V | Through Hole | 12mm | 85C | Electrolytic | Nichicon | M | |
| C5, C9 | 2 | 47uF | 50V | Through Hole | 6.5mm | 85C | Electrolytic | Nichicon | M | |
| C7 | 1 | 220uF | 25V | Through Hole | 8mm | 85C | Electrolytic | Nichicon | M | |
| C16, C15, C20 | 3 | 1uF | 50V | Through Hole | 5mm | 85C | Electrolytic | Nichicon | M | |
| C12, C13 | 2 | 4.7uF | 50V | Through Hole | 5mm | 85C | Electrolytic | Nichicon | M |
Sub-Board
31-1022
| RefDes | Qty | Capacitance | Voltage | Mount | Diameter/Size | Pitch | Temp | Type | Brand | Series |
|---|---|---|---|---|---|---|---|---|---|---|
| C19 | 1 | 2.2uF | 50V | Through Hole | 5mm | 85C | Electrolytic | Nichicon | M | |
| C33 | 1 | 10uF | 6.3V | Through Hole | 5mm | 85C | Electrolytic | Nichicon | M |
Sub-Board
31-1033
| RefDes | Qty | Capacitance | Voltage | Mount | Diameter/Size | Pitch | Temp | Type | Brand | Series |
|---|---|---|---|---|---|---|---|---|---|---|
| C43 | 1 | 220uF | 25V | Through Hole | 8mm | 85C | Electrolytic | Nichicon | M |
Additional Images
-
DC Output ratings label. This power supply also provides some voltages used for the CRT driving electronics in the computer.
-
DC output side of the power supply
-
Mains input side of the power supply
