Jump to content
Main menu
Main menu
move to sidebar
hide
Navigation
Main Page
Community portal
Village Pump
Recent changes
Upload file
Help
Help contents
Editing guide
Writing a repair guide
Sandbox
Browse Wiki
Service Manuals
Apple
Nintendo
Sega
Troubleshooting
Search
Search
Appearance
Create account
Log in
Personal tools
Not logged in
Talk
Contributions
Create account
Log in
Editing
Amstrad PC1640 Capacitor Replacement Guide
(section)
Page
Discussion
English
Read
Edit
Edit source
View history
Tools
Tools
move to sidebar
hide
Actions
Read
Edit
Edit source
View history
General
What links here
Related changes
Page information
Appearance
move to sidebar
hide
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
== CPU board: C124 == C124 sits on the +5 V feed through R181, the 5.6 Ω fusible resistor that powers IC110 (74LS125). On one PC1640 it failed short, burning out R181 and causing the BIOS's floppy controller error; owners give it as 100 µF.<ref name="vcffdc">jarcher1701, modem7, austfox and others, [https://forum.vcfed.org/index.php?threads/amstrad-pc1640-faulty-floppy-disk-controller-or-disk-drive.1245278/ "Amstrad PC1640 – Faulty Floppy Disk Controller or Disk Drive"], Vintage Computer Federation Forums, October–December 2023. Retrieved 2026-10-02. Community repair: C124 (100 µF) failed short, R181 burnt out, IC110 without power, and the floppy controller error.</ref> Amstrad's PC2086 parts list, for a later board of the same family, also gives C124 as 100 µF (10 V or 16 V).<ref name="sm2086">Amstrad plc, ''PC2086 S/D/30 Personal Computer Service Manual''. Hosted as [[:File:Amstrad PC 2086 Service Manual.pdf]], described at [[Amstrad PC 2086 Service Manual]]. Electrical parts list p. 4.</ref> Read the value and voltage printed on the part in your machine before replacing it, and replace R181 at the same time if it has failed. The [[Amstrad PC1640 Troubleshooting Guide]] has the full fault report.
Summary:
Other contributors may edit, change or remove anything you write here. Text you write is released under CC BY-SA 4.0 and the GFDL; see the
Terms of Use
.
If you add copyrighted material, such as text or pages from a manual, cite it: give the source, the author or publisher, and the copyright holder. See
RetroTechCollection:Copyrights
.
Cancel
Editing help
(opens in new window)
Search
Search
Editing
Amstrad PC1640 Capacitor Replacement Guide
(section)
Add topic
