View source for PCB Repair Logs Moon Patrol (Bootleg)

==Moon Patrol (Bootleg)==
<p><table class="infobox vevent" style="width:22em;" cellspacing="5">
<caption class="summary" style=""><b>Moon Patrol (Bootleg)</b></caption>
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<td colspan="2" class="" style="text-align:center;">[[Image:marquee_moon_patrol.jpg|200px]]</td>
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<th scope="row" style="text-align:left; white-space: nowrap;">PCB Image</th>
<td class="" style="">Reserved</td>
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<th scope="row" style="text-align:left; white-space: nowrap;">Pin Out</th>
<td class="" style="">Reserved</td>
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</table></p>
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===Board 1===
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'''Repairer:''' [http://www.aussiearcade.com.au/member.php/1-Arcade-King Arcade King]<br>
'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/42164-Moon-Patrol-Repair Moon Patrol (Bootleg) PCB Repair]<br>
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'''Problem:''' Garbled foreground graphics, text and title screen. Turning voltage right down would bring most of it back.<br>
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[[File:Pcb repair moon patrol bootleg 1.jpg]]
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'''Fix:''' The background, text and scrolling is handled by the bottom pcb marked MP-712D. Using the Schematics and a Scope I traced the problem back to a pair of 74ls173's @ 1D and 1E.<br>

'''Problem:''' No sync<br>
'''Fix:''' dead 74ls139 @ 2C on the CPU board MP-712B<br>
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'''Problem:''' No sound.<br>
'''Fix: '''missing 1000uf 16v cap C21 and 3.579545 mhz crystal.<br>
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16/03/08
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'''Problem:''' white blocks over moving sprites with horizontal lines through them.<br>
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[[File:Pcb repair moon patrol bootleg 2.png]]
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'''Fix:''' Dead output of a 74ls08 @ 4D See pic 2<br>
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26/05/11<br>
===Board 2 (Blue bootleg)===
Problem:''' Background layer is missing other than a green at the top and the red bottom layer. Layers do not move: game resets randomly.<br>
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[[File:Pcb repair moon patrol bootleg 2 1.jpg]]
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'''Fix:''' Dead 74ls08 on the board labelled MP-712D which outputs all the background paralax scrolling data. Only pins 11, 12 and 13 get used 11 being the output. Fugitsu naturally<br>
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===Board 3 (Green Bootleg)===
Using good working set above I went through each layer and fix them.<br>
(MP-712B)(CPU)<br>
'''Problem: ''' Dead board, no clock on pin 6 of Z80<br>
Fix. Output stuck high on 7417 @ L6 pin 12<br>
Pic 4 and pic 5 show working input and output(inverted) on scope.<br>
'''Problem:''' Blocky Graphics, program seems to be running but will crash after awhile.<br>
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[[File:Pcb repair moon patrol bootleg 3 1.jpg]]
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'''Fix:''' Pin 15 stuck high on the bus transceiver 74ls245 @ 5m (Fujitsu)<br>
Board now runs.<br>
(MP-712C)<br>
'''Problem:''' Character Sprites in wrong positions, buggy all the way to the right.<br>
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[[File:Pcb repair moon patrol bootleg 3 2.jpg]]
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'''Fix:''' Dead output on 74ls139 pin 12 (Fujitsu) All other out puts stuck high.<br>
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'''Problem:''' 5 out of the 6 enemy ships missing from top of screen in demo but you can still see the enemy firing. Other symptoms: Buggy splits apart(half buggy at bottom of screen) when jumping rocks when going up hill, as board warms up some sprites are split apart.<br>
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[[File:Pcb repair moon patrol bootleg 3 3.jpg]]
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[[File:Pcb repair moon patrol bootleg 3 4.jpg]]
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[[File:Pcb repair moon patrol bootleg 3 5.jpg]]
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'''Fix:''' Bad 2114 ram @ K7<br>
Other notes.<br>
I must have raided this board at some point for the 32 and 256 bit proms @ 1F and 2H and a AY3-8910 on the sound board. All missing parts replaced with new ones.
The high score save mod is based on the williams set so I reprogrammed my blue board to suit. Just a matter of reprogramming 6 roms and 1 prom.
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[[File:Pcb repair moon patrol bootleg 3 6.jpg]]
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And of course this is how all Moon Patrol's should look
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