https://wiki.arcadeotaku.com/index.php?action=history&feed=atom&title=Mercs_Repair_Logs 2026-04-03T18:54:45Z Revision history for this page on the wiki MediaWiki 1.42.1 https://wiki.arcadeotaku.com/index.php?title=Mercs_Repair_Logs&diff=15041&oldid=prev 2021-12-17T03:04:32Z

<p></p> <p><b>New page</b></p><div>Repairer: channelmaniac<br /> <br /> Symptom: Missing background graphics<br /> <br /> Cleaned pins on the 0224B PROM and tested.<br /> <br /> ----<br /> <br /> Symptom: Corrupt foreground and background graphics<br /> <br /> Resoldered the C board chip and tested<br /> <br /> ----<br /> ----<br /> &#039;&#039;&#039;Repairer:&#039;&#039;&#039; Apocalypse&lt;br&gt;<br /> &#039;&#039;&#039;Source:&#039;&#039;&#039; [https://web.archive.org/web/20191230200351/http://arcadefixer.blogspot.com/2017/08/ Mercs - Capcom 1990 (repair log)]&lt;br&gt;<br /> <br /> The game was almost 100% running ok. But here were bars across the screen visible only when background was black. Nothing noticeable in game.&lt;br&gt;<br /> [[File:ApocMERCS_1.JPG]]&lt;br&gt;<br /> [[File:ApocMERCS_2.JPG]]&lt;br&gt;<br /> I swapped the A and C boards and narrowed the fault to the B board. Then I swapped the ROMs and PALs and found the B board itself was faulty. I probed the few ICs on the board but didn&#039;t find any suspicious one. It&#039;s the third time I face this exact same issue on CPS1, two previous times it was simply a cut trace. This time made no exception. I found only one broken trace and patched it with the core of kynar wire.&lt;br&gt;<br /> [[File:ApocMERCS_3.JPG]]&lt;br&gt;<br /> [[File:ApocMERCS_4.JPG]]&lt;br&gt;<br /> [[File:ApocMERCS_5.JPG]]&lt;br&gt;<br /> Game fixed.<br /> [[Category:Repair Logs]]</div>

Davewellington