https://wiki.arcadeotaku.com/index.php?action=history&feed=atom&title=Double_Dragon_%28Bootleg%29_Repair_LogsDouble Dragon (Bootleg) Repair Logs - Revision history2026-05-18T17:52:35ZRevision history for this page on the wikiMediaWiki 1.42.1https://wiki.arcadeotaku.com/index.php?title=Double_Dragon_(Bootleg)_Repair_Logs&diff=7647&oldid=prevDavewellington: Created page with "'''Repairer:''' [http://www.aussiearcade.com.au/member.php/8767-Elgen Elgen]<br> '''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/46401-Taito-Double-Dragon-B..."2012-09-13T00:44:00Z<p>Created page with "'''Repairer:''' [http://www.aussiearcade.com.au/member.php/8767-Elgen Elgen]<br> '''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/46401-Taito-Double-Dragon-B..."</p>
<p><b>New page</b></p><div>'''Repairer:''' [http://www.aussiearcade.com.au/member.php/8767-Elgen Elgen]<br><br />
'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/46401-Taito-Double-Dragon-Bootleg-Repair-Log Double Dragon (Bootleg) PCB Repair]<br><br />
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This game is a true 80's classic (well at least around Roskilde, Denmark where I grew up). Back then almost all of my arcade gaming was done at burger joints with names like: Torvegrillen, Burger Place, Burger Boss, and Wopsi Burger. The latter was the best as it had 10+ standard cabinets with games changing about once a month...<br />
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Well enough nostalgia for this post; I proudly present (a bootleg of): Double Dragon!<br />
I bought this just a few days ago, and by the symptoms it looked like an easy fix, so I started right away. A self test looking like this is always a good sign.<br />
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[[File:Pcb repair double dragon bootleg 1.jpg]]<br />
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...but then trouble started. An intro screen looking like this:<br />
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[[File:Pcb repair double dragon bootleg 2.jpg]]<br />
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Also the sprites where pretty messed up with stripes through them and some parts misplaced:<br />
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[[File:Pcb repair double dragon bootleg 3.jpg]]<br />
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And the game had no sound at all!<br />
Well easy to see that these two cabs in the sound section had seen better days<br />
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[[File:Pcb repair double dragon bootleg 4.jpg]]<br />
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and not all that surprisingly, changing them brougth the sound back };-)<br />
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[[File:Pcb repair double dragon bootleg 5.jpg]]<br />
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The board had some other obvious physical damages that needed fixing.<br />
Here a knocked-off smoothening cap<br />
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[[File:Pcb repair double dragon bootleg 6.jpg]]<br />
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[[File:Pcb repair double dragon bootleg 7.jpg]]<br />
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1 transistor with 2 pins ripped off and the other one missing all together<br />
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[[File:Pcb repair double dragon bootleg 8.jpg]]<br />
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[[File:Pcb repair double dragon bootleg 9.jpg]]<br />
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A physically broken 157; the 04 just beside it had also taken a big knock at some point and was replaced for good measure as well. Both spares was taken from scrap boards.<br />
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[[File:Pcb repair double dragon bootleg 10.jpg]]<br />
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[[File:Pcb repair double dragon bootleg 11.jpg]]<br />
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Now I did expect to see some kind of change when replacing the broken 157, but not the kind that I saw when hooking the board up again...<br />
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[[File:Pcb repair double dragon bootleg 12.jpg]]<br />
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Hmmm, must have done something wrong when fitting them sockets. Pulled the 157 again and had a look. Now I really appreciated myself for always using breakable header sockets instead of normal sockets, as this gave my a clear look down between the two rows. I found one of the tracks between a via and one of the pins suspicious, and the continuity tester confirmed my hunch.<br />
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[[File:Pcb repair double dragon bootleg 13.jpg]]<br />
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Patched it up with a little piece of kynar on the solderside.<br />
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[[File:Pcb repair double dragon bootleg 14.jpg]]<br />
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Now the boot error had gone, but there was still no change in regards to the graphics on screen.<br />
Until now I had only concentrated on the primary PCB, so now I had a look at the secondary one. The component side looked incredibly fine, considering the damages found on the primary one. The solder side however had a fair among of scratches and was also pretty dirty.<br />
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[[File:Pcb repair double dragon bootleg 15.jpg]]<br />
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I gave the worst place a light scrup with rubbing alcohol and tooth brush, and I found 1 pin touching a nearby via and a track that was scratched in 3 places. Again the continuity tester confirmed...<br />
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[[File:Pcb repair double dragon bootleg 16.jpg]]<br />
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So straitened the pin (along with about 5 others that I found, for good measure) with a Stanley knife a alot of caution. Then patched the broken track with kynar.<br />
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[[File:Pcb repair double dragon bootleg 17.jpg]]<br />
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And NOW, the intro screen<br />
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[[File:Pcb repair double dragon bootleg 18.jpg]]<br />
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and the sprites where alive and kicking again };-)<br />
(please take note of the cute up-skirt view you get in this pic };-P).<br />
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[[File:Pcb repair double dragon bootleg 19.jpg]]<br />
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Now all was good, and I started test-playing the game. But when I tried a 2-player game, the hit-button for player-2 was unresponsive. A quick glance at the input section on the primary PCB, and my eyes caught this broken resistor array.<br />
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[[File:Pcb repair double dragon bootleg 20.jpg]]<br />
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By measuring on one it's sisters, I found that this was not the same type as nomally used for pull-ups (with a common point). It was more like 4 parallel resistors just packed into one house. I couldn't find any of those on any of my scraps, so desided on just fitting 4 standard 220Ohms resistors. Now the original bootleggers had put 2 componentpins into each hole, but with the pin-diameter of the standard resistors, I had no chance of doing that. So I desoldered the standard pull-up array<br />
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[[File:Pcb repair double dragon bootleg 21.jpg]]<br />
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and resoldered it so that it was possible to access the pins from the component side. Then I soldered the 4 standard resistors directly on the pins from the component side.<br />
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[[File:Pcb repair double dragon bootleg 22.jpg]]<br />
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And once again our Red Hero is able to swing his pork chop against the baddies };-P<br />
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[[File:Pcb repair double dragon bootleg 23.jpg]]<br />
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And finally this case is closed };-D <br />
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'''Repair Logs converted to wiki format by Brad from [http://www.aussiearcade.com.au Aussie Arcade]'''.<br />
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[[Category:Repair Logs]]</div>Davewellington