https://wiki.retrotechcollection.com/index.php?action=history&feed=atom&title=Talk%3ABBC_Micro_Model_A%2FB_Capacitor_Replacement_Guide 2026-04-24T19:56:55Z Revision history for this page on the wiki MediaWiki 1.45.1 https://wiki.retrotechcollection.com/index.php?title=Talk:BBC_Micro_Model_A/B_Capacitor_Replacement_Guide&diff=8920&oldid=prev 2025-12-14T23:57:11Z

<p><span class="autocomment">C9 Main Board Capacitor: </span> Reply</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 00:57, 15 December 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l11">Line 11:</td> <td colspan="2" class="diff-lineno">Line 11:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>By the way great article....  thanks Mike [[Special:Contributions/2A01:CB00:8118:5500:E84E:45F0:E1A4:C4B|2A01:CB00:8118:5500:E84E:45F0:E1A4:C4B]] 09:36, 13 December 2025 (GMT)</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>By the way great article....  thanks Mike [[Special:Contributions/2A01:CB00:8118:5500:E84E:45F0:E1A4:C4B|2A01:CB00:8118:5500:E84E:45F0:E1A4:C4B]] 09:36, 13 December 2025 (GMT)</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:Hi Mike,</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:Very good catch! I've just checked my issue 4 board and it's the same! I will update this now.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:All the best,</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:Josh [[User:Josh|Josh]] ([[User talk:Josh|talk]]) 23:57, 14 December 2025 (GMT)</ins></div></td></tr> </table>

Josh https://wiki.retrotechcollection.com/index.php?title=Talk:BBC_Micro_Model_A/B_Capacitor_Replacement_Guide&diff=8919&oldid=prev 2025-12-13T09:36:50Z

<p><span class="autocomment">C9 Main Board Capacitor: </span> new section</p> <p><b>New page</b></p><div>== C9 Main Board Capacitor ==<br /> <br /> Can I double check the C9 value on this list? I have an Issue 4 BBC Model B. C9 on the board looks like a 10uF.<br /> <br /> When I look at Power supply C9 looks like the 220uF?<br /> <br /> Because I have a low -5V (I am measuring -4.37V) I am assuming that this is linked to my current problems. Boots and runs normally from cold for 5 minutes than crashes. Fails to restart until completely cold (or capacitors discharged???)<br /> <br /> I dont have much experience in all of this so any clarifaction welcomed.<br /> <br /> <br /> By the way great article.... thanks Mike [[Special:Contributions/2A01:CB00:8118:5500:E84E:45F0:E1A4:C4B|2A01:CB00:8118:5500:E84E:45F0:E1A4:C4B]] 09:36, 13 December 2025 (GMT)</div>

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