PC-9821N-U01
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PC9821N-U01 Power Supply
| Preliminary Information | |
|---|---|
| Release Year | 199X |
| Leak Risk | High |
| Batteries | None |
| Mounting Technology | Through Hole |
| Capacitor Types | Aluminum Electrolytic, Ceramic, Polymer |
| Destructive Entry | No |
| Power Requirements | |
| Input Voltage | 100V AC |
Power supply for multiple PC-9821 ノート (notebook) computers.
Known Issues
Computer won't power on, sometimes LEDs flash for a moment.
Causes
- Leaking capacitors
Solutions
- Clean PCB and replace capacitors
Disassembly Notes
There is a screw hidden under the label. Note that it is a Japanese screw, so if you don't have Japanese screwdrivers be careful not to strip it with a Philips head.
After removing the screw the sides are clipped together.
Once inside the PSU is surrounded by a metal shield and plastic insulation. Desolder the metal part from the PCB, and remove the nut and screw for the heatsink. It will then slide off.
Original Parts
Tonkin PCB
| RefDes | Qty | Capacitance | Voltage | Mount | Diameter/Size | Height | Lead Spacing | Temp | Type | Brand | Series |
|---|---|---|---|---|---|---|---|---|---|---|---|
| C7 | 1 | 270 µF | 200 WV | Snap In | 22mm | 25mm | 10mm | 105 °C | Electrolytic | Nichicon | GQ (M) |
| C11 | 1 | 33 µF | 35V | TH radial | 5mm | 12mm | 2.54mm | 105 °C | Electrolytic | Nichicon | CE-DF |
| C201 | 1 | 33 µF | 35V | TH radial | 5mm | 12mm | 2.54mm | 105 °C | Electrolytic | Nichicon | VZ (M) |
| C204, C208 | 2 | 1 µF non polarized | 50V | TH radial | 5mm | 11mm | 2.54mm | 105 °C | Electrolytic | Chemi-Con | KME |
| C102, C103, C104, C105 | 4 | 330 µF | 25V | TH radial | 8mm | 20mm | 3.5mm | 105 °C | Electrolytic | Nichicon | PL (M)* |
*This series of capacitors has been known to leak electrolyte out of its rubber bung.
Replacement Parts
Tonkin PCB
| RefDes | Qty | Compatible Part Number | Order Links |
|---|---|---|---|
| C7 | 1 | B43254B2277M000 | Digikey Mouser |
| C11 | 1 | Digikey Mouser LCSC | |
| C201 | 1 | 860020572005 / EKMG350ETD330ME11D | Digikey Mouser LCSC |
| C204, C208 | 2 | 50NXA1MEFC5X11 | Digikey Mouser |
| C102, C103, C104, C105 | 4 | RES0816331M025B / 25ZLH330MEFC8X11.5 | Digikey Mouser LCSC |
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
- None
Related Links
- None