PC-9821N-U01: Difference between revisions

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{{WikipediaInfoAlt|Device}}
{{DeviceAlerts}}
{{InfoboxDevice
{{InfoboxDevice
|Title = New Device
|Title = PC9821N-U01 Power Supply
|Picture =  
|Picture =  
|Release Year = 1980
|Release Year = 199X
|Mounting Technology = Through Hole, SMD, BGA, Sockets
|Mounting Technology = Through Hole
|Capacitor Types = Aluminum Electrolytic, Tantalum, Ceramic, Polymer
|Capacitor Types = Aluminum Electrolytic, Ceramic, Polymer
|Leak Risk = Medium
|Leak Risk = High
|Batteries = None
|Batteries = None
|Destructive Entry = No
|Destructive Entry = No
}}
|Input Voltage=100V AC}}
This is a template page for creating new pages for devices, troubleshooting them, part lists, and other repair info.
Power supply for multiple PC-9821 ノート (notebook) computers.


== Known Issues ==
== Known Issues ==


===Symptom or Problem Encountered===
===Computer won't power on, sometimes LEDs flash for a moment.===
====Causes====
====Causes====
*Description of cause
*Leaking capacitors
====Solutions====
====Solutions====
*Solution to the problem
*Clean PCB and replace capacitors


== Disassembly Notes ==
== Disassembly Notes ==
Warnings or tips to disassemble the device
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 ==
== Original Parts ==
=== Basic PCB Name ===
=== Tonkin PCB ===
''Note model numbers and board revisions here''
[[File:PXL 20250315 212652873 1.jpg|thumb|PCB underside]]
[[File:PXL 20250315 212716292 1.jpg|thumb|Capacitors 1]]
[[File:PXL 20250315 212721073 2.jpg|thumb|Capacitors 2]]
[[File:PXL 20250315 212726911.jpg|thumb|Capacitors 3]]
{| class="wikitable sortable"
{| class="wikitable sortable"
|+Capacitor [[Capacitor Specifications|Specifications]] and  [[Part Footprints|Footprint]] Information
|+Capacitor [[Capacitor Specifications|Specifications]] and  [[Part Footprints|Footprint]] Information
Line 42: Line 47:
!Series
!Series
|-
|-
|
|C7
|
|1
|0 µF
|270 µF
|
|200 WV
|
|Snap In
|
|22mm
|
|25mm
|
|10mm
|0 °C
|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)*
|}
|}
<nowiki>*</nowiki>This series of capacitors has been known to leak electrolyte out of its rubber bung.


==Replacement Parts==
==Replacement Parts==
===Basic PCB Name===
===Tonkin PCB===
{| class="wikitable sortable"
{| class="wikitable sortable"
|+Capacitors
|+Capacitors
Line 65: Line 123:
! Order Links
! Order Links
|-
|-
|C7
|1
|B43254B2277M000
|[https://www.digikey.com/en/products/detail/epcos-tdk-electronics/B43254B2277M000/3720575 Digikey] [https://www.mouser.com/ProductDetail/EPCOS-TDK/B43254B2277M000?qs=Ps7QaYwWPwyMPUbGlnMDRg%3D%3D Mouser]
|-
|C11
|1
|
|
|
|[https://www.digikey.com/ Digikey] Mouser LCSC
|
|-
|[https://www.digikey.com/ Digikey]
|C201
|1
|860020572005 / EKMG350ETD330ME11D
|[https://www.digikey.com/ Digikey] [https://www.mouser.com/ProductDetail/Wurth-Elektronik/860020572005?qs=0KOYDY2FL29zne3wOZxuHw%3D%3D Mouser] [https://www.lcsc.com/product-detail/Aluminum-Electrolytic-Capacitors-Leaded_NCC-Nippon-Chemi-Con-EKMG350ETD330ME11D_C133455.html LCSC]
|-
|C204, C208
|2
|50NXA1MEFC5X11
|[https://www.digikey.com/en/products/detail/rubycon/50NXA1MEFC5X11/3562827 Digikey] [https://www.mouser.com/ProductDetail/Rubycon/50NXA1MEFC5X11?qs=T3oQrply3y9M5P7Zjly6CA%3D%3D Mouser]
|-
|C102, C103, C104, C105
|4
|RES0816331M025B / 25ZLH330MEFC8X11.5
|[https://www.digikey.com/en/products/detail/kyocera-avx/RES0816331M025B/21848849 Digikey] [https://www.mouser.com/ProductDetail/KYOCERA-AVX/RES0816331M025B?qs=17ckDYBRdelKUbyLsHKpgw%3D%3D Mouser] [https://www.lcsc.com/product-detail/Aluminum-Electrolytic-Capacitors-Leaded_Rubycon-25ZLH330MEFC8X11-5_C109394.html LCSC]
|}
|}
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''


===Kits===
===Kits===
* Digikey BOM: https://www.digikey.com/
* None


== Related Links ==
== Related Links ==


* [https://www.youtube.com Videos or other things that might be helpful to check out]
* None


== References ==
== References ==

Latest revision as of 23:47, 6 April 2025

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

PCB underside
Capacitors 1
Capacitors 2
Capacitors 3
Capacitor Specifications and Footprint Information
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

Capacitors
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

References

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