PCB Repair Logs Xevios - Revision history

Brad at 05:37, 14 August 2012

2012-08-14T05:37:53Z

← Older revision		Revision as of 13:37, 14 August 2012
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	I replaced the MB3730 amp booted her up but it would give me some ram error and the screen would be full of static and wavyness. If you removed the 12 volt line it would be fine. I thought this would be a simple fix but how wrong was I.		I replaced the MB3730 amp booted her up but it would give me some ram error and the screen would be full of static and wavyness. If you removed the 12 volt line it would be fine. I thought this would be a simple fix but how wrong was I.

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			<p>[[File:Xevios_blur.jpg\|200px]]</p>
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	This game didnt really interest me so i got sick of wasting time on it and threw it on the "I'll get to it some day" pile.		This game didnt really interest me so i got sick of wasting time on it and threw it on the "I'll get to it some day" pile.

Brad at 05:36, 14 August 2012

2012-08-14T05:36:21Z

← Older revision		Revision as of 13:36, 14 August 2012
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	This game didnt really interest me so i got sick of wasting time on it and threw it on the "I'll get to it some day" pile.		This game didnt really interest me so i got sick of wasting time on it and threw it on the "I'll get to it some day" pile.
	Working on Galaxians and my retro fit amp I stumbled on the same problem when I removed a big 2200uf cap that ran from the 12 volt line to ground. Only reason I removed it was I noticed more modern PCBs used a 470uf cap with this amp and wanted to see what the difference was if any, I managed to recreate the exact ripple as Xevios had. Had a brain storm so after I finished my work on Galaxians I pulled out Xevious which by this time I had pulled parts off it. I managed to find all the parts ran a 470uf cap from the 12volt line to ground and hey presto working board with sound. So the cap running from the 12 volt line to ground is used to get rid of the ripple. I'm sure somebody non backyarder can explain it better than me.
	Lesson learned		Working on Galaxians and my retro fit amp I stumbled on the same problem when I removed a big 2200uf cap that ran from the 12 volt line to ground. Only reason I removed it was I noticed more modern PCBs used a 470uf cap with this amp and wanted to see what the difference was if any.
	There is a small fault I will get to one day where if you turn the voltage up to 5 volts the sound gets all messed up and random. Running the board at 4.5 volts it runs fine.
			I managed to recreate the exact ripple as Xevios had. Had a brain storm so after I finished my work on Galaxians I pulled out Xevious which by this time I had pulled parts off it. I managed to find all the parts ran a 470uf cap from the 12volt line to ground and hey presto working board with sound.

			So the cap running from the 12 volt line to ground is used to get rid of the ripple. I'm sure somebody non backyarder can explain it better than me.

			Lesson learned. There is a small fault I will get to one day where if you turn the voltage up to 5 volts the sound gets all messed up and random. Running the board at 4.5 volts it runs fine.
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			[[PCB_Repair_Index\|Back to PCB Repair Index]]

Brad at 05:34, 14 August 2012

2012-08-14T05:34:37Z

@@ Line 18: / Line 18: @@
 </table></p>
 '''Repairer:''' [http://www.aussiearcade.com.au/member.php/1-Arcade-King Arcade King]<br>
-'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/541-Galaxians-and-Xevios Galaxian PCB Repair]<br>
+'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/541-Galaxians-and-Xevios Xevios PCB Repair]<br>

Brad at 05:32, 14 August 2012

2012-08-14T05:32:42Z

← Older revision		Revision as of 13:32, 14 August 2012
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	<tr class="">		<tr class="">
	<th scope="row" style="text-align:left; white-space: nowrap;">PCB Image</th>		<th scope="row" style="text-align:left; white-space: nowrap;">PCB Image</th>
	<td class="" style="">[http://wiki.aussiearcade.com.au/index.php/File:~~Xevios_pcb_board~~.jpg Xevios]</td>		<td class="" style="">[http://wiki.aussiearcade.com.au/index.php/File:Xevios_pcb.jpg Xevios]</td>
	</tr>		</tr>
	<tr class="">		<tr class="">

Brad at 05:32, 14 August 2012

2012-08-14T05:32:24Z

← Older revision		Revision as of 13:32, 14 August 2012
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	<tr class="">		<tr class="">
	<th scope="row" style="text-align:left; white-space: nowrap;">PCB Image</th>		<th scope="row" style="text-align:left; white-space: nowrap;">PCB Image</th>
	<td class="" style="">[http://wiki.aussiearcade.com.au/index.php/File:~~Midway_galaxian_pcb_board~~.jpg ~~Midway Galaxian~~]</td>		<td class="" style="">[http://wiki.aussiearcade.com.au/index.php/File:Xevios_pcb_board.jpg Xevios]</td>
	</tr>		</tr>
	<tr class="">		<tr class="">

Brad at 05:31, 14 August 2012

2012-08-14T05:31:35Z

← Older revision		Revision as of 13:31, 14 August 2012
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	<caption class="summary" style=""><b>Xevios</b></caption>		<caption class="summary" style=""><b>Xevios</b></caption>
	<tr class=">		<tr class=">
	<td colspan="2" class="" style="text-align:center;">[[Image:~~Xevios_marquee~~.jpg\|200px]]</td>		<td colspan="2" class="" style="text-align:center;">[[Image:Xevious_marquee.jpg\|200px]]</td>
	</tr>		</tr>
	<tr class="">		<tr class="">

Brad at 05:31, 14 August 2012

2012-08-14T05:31:24Z

← Older revision		Revision as of 13:31, 14 August 2012
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	<caption class="summary" style=""><b>Xevios</b></caption>		<caption class="summary" style=""><b>Xevios</b></caption>
	<tr class=">		<tr class=">
	<td colspan="2" class="" style="text-align:center;">[[Image:Xevios_marquee.~~png~~\|200px]]</td>		<td colspan="2" class="" style="text-align:center;">[[Image:Xevios_marquee.jpg\|200px]]</td>
	</tr>		</tr>
	<tr class="">		<tr class="">

Brad at 05:31, 14 August 2012

2012-08-14T05:31:06Z

← Older revision		Revision as of 13:31, 14 August 2012
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	Xevios is a bootleg of Xevious		Xevios is a bootleg of Xevious

			<p><table class="infobox vevent" style="width:22em;" cellspacing="5">
			<caption class="summary" style=""><b>Xevios</b></caption>
			<tr class=">
			<td colspan="2" class="" style="text-align:center;">[[Image:Xevios_marquee.png\|200px]]</td>
			</tr>
			<tr class="">
			<th scope="row" style="text-align:left; white-space: nowrap;">PCB Image</th>
			<td class="" style="">[http://wiki.aussiearcade.com.au/index.php/File:Midway_galaxian_pcb_board.jpg Midway Galaxian]</td>
			</tr>
			<tr class="">
			<th scope="row" style="text-align:left; white-space: nowrap;">Pin Out</th>
			<td class="" style="">Reserved</td>
			</tr>
			</table></p>
			'''Repairer:''' [http://www.aussiearcade.com.au/member.php/1-Arcade-King Arcade King]<br>
			'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/541-Galaxians-and-Xevios Galaxian PCB Repair]<br>

Brad: Created page with "== Xevios == Xevios is a bootleg of Xevious"

2012-08-14T05:28:30Z

Created page with "== Xevios == Xevios is a bootleg of Xevious"

New page

== Xevios ==

Xevios is a bootleg of Xevious