Difference between revisions of "PCB Repair Logs Black Dragon"

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<caption class="summary" style=""><b>Black Dragon</b></caption>
<caption class="summary" style=""><b>Black Dragon</b></caption>
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<td colspan="2" class="" style="text-align:center;">[[Image:marquee_black_dragon.jpg|200px]]</td>
<td colspan="2" class="" style="text-align:center;">[[Image:marquee_black_tiger.png|200px]]</td>
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Revision as of 08:32, 5 February 2013

Black Dragon

Black Dragon
200px
Manufacturer Capcom
Year 1988
PCB Image Reserved
Pin Out Jamma Pinout

Repairer: Arcade King
Forum Thread: Black Dragon PCB Repair

Brad's Original Black Dragon (Tiger) PCB

PCB was missing 2 roms a 27512 @ 9B and 27256 @ 2N

The rom at 2N is for all the in game foreground text and 9B is part of the background.

First things first replaced the 2 missing roms.

Problem: Foreground text is all messed up.


Pcb repair black dragon 1.jpg

Fix: Pin 23 (A11) on rom 2N was stuck High. Tracked back to pin 2 of a 74ls253 @ 3N. Replacing the chip fixed the problem.

Problem: Character Graphics have faint horizontal lines through them.


Pcb repair black dragon 2.jpg

Fix: Faulty 74ls253 @ 2K. Both chips were TI (Texas Instruments) branded IC's


Pcb repair black dragon 3.jpg

Board now 100%



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