PCB Repair Logs The Simpsons - Revision history

Brad at 00:30, 7 February 2013

2013-02-07T00:30:13Z

← Older revision		Revision as of 08:30, 7 February 2013
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	<tr class=">		<tr class=">
	<td colspan="2" class="" style="text-align:center;">[[Image:marquee_the_simpsons.png\|200px]]</td>		<td colspan="2" class="" style="text-align:center;">[[Image:marquee_the_simpsons.png\|200px]]</td>
			</tr>
			<tr class="">
			<th scope="row" style="text-align:left; white-space: nowrap;">Manufacturer</th>
			<td class="" style="">[[PCB_Manufacturers_Konami\|Konami]]</td>
			</tr>
			<tr class="">
			<th scope="row" style="text-align:left; white-space: nowrap;">Year</th>
			<td class="" style="">1991</td>
	</tr>		</tr>
	<tr class="">		<tr class="">
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	<tr class="">		<tr class="">
	<th scope="row" style="text-align:left; white-space: nowrap;">Pin Out</th>		<th scope="row" style="text-align:left; white-space: nowrap;">Pin Out</th>
	<td class="" style="">~~Reserved~~</td>		<td class="" style="">[[PCB_Pinouts_Jamma\|Jamma]]</td>
	</tr>		</tr>
	</table></p>		</table></p>

Brad at 04:37, 5 September 2012

2012-09-05T04:37:28Z

@@ Line 15: / Line 15: @@
 </tr>
 </table></p>
 '''Repairer:''' [http://www.aussiearcade.com.au/member.php/3136-VectorGlow VectorGlow]<br>
@@ Line 26: / Line 28: @@
 <br>'''Cure:''' Replaced faulty ‘053260’ Konami custom chip at location 3E<br>
-<br>[[PCB_Repair_Index|Back to PCB Repair Index]]
+'''Repairer:''' [http://www.aussiearcade.com.au/member.php/6786-RetroRepair RetroRepair]<br>

Brad at 02:39, 21 August 2012

2012-08-21T02:39:16Z

← Older revision		Revision as of 10:39, 21 August 2012
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	'''Diagnosis:''' Noticed that when going into the self test and doing a ROM Check the two mask ROMs for the samples at 1D and 1F were never being tested – the test seemed to skip those, so it tested the rest of the ROMs and put up ‘OK’ with a checksum, but never put up a checksum for 1D and 1F or even an ‘OK’. <br>		'''Diagnosis:''' Noticed that when going into the self test and doing a ROM Check the two mask ROMs for the samples at 1D and 1F were never being tested – the test seemed to skip those, so it tested the rest of the ROMs and put up ‘OK’ with a checksum, but never put up a checksum for 1D and 1F or even an ‘OK’. <br>

	Played the game and checked the schematics and found no address or data line activity on those ROMs. The addressing comes from the surface mount Konami custom ‘053260’ at location 3E and the inputs to this chip were good, just no output. So had to replace the chip with one from another Konami board of that era, then the sound worked perfectly.		Played the game and checked the schematics and found no address or data line activity on those ROMs. The addressing comes from the surface mount Konami custom ‘053260’ at location 3E and the inputs to this chip were good, just no output. So had to replace the chip with one from another Konami board of that era, then the sound worked perfectly.<br>
	<br>'''Cure:''' Replaced faulty ‘053260’ Konami custom chip at location 3E<br>		<br>'''Cure:''' Replaced faulty ‘053260’ Konami custom chip at location 3E<br>


	<br>[[PCB_Repair_Index\|Back to PCB Repair Index]]		<br>[[PCB_Repair_Index\|Back to PCB Repair Index]]

Brad at 02:39, 21 August 2012

2012-08-21T02:39:06Z

← Older revision		Revision as of 10:39, 21 August 2012
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	'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/24440-Konami-s-The-Simpsons-Repair-Log The Simpsons PCB Repair]<br>		'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/24440-Konami-s-The-Simpsons-Repair-Log The Simpsons PCB Repair]<br>
	<br>		<br>
			'''Symptom:''' No sound, but sound amp okay<br>
			<br>
			'''Diagnosis:''' Noticed that when going into the self test and doing a ROM Check the two mask ROMs for the samples at 1D and 1F were never being tested – the test seemed to skip those, so it tested the rest of the ROMs and put up ‘OK’ with a checksum, but never put up a checksum for 1D and 1F or even an ‘OK’. <br>

			Played the game and checked the schematics and found no address or data line activity on those ROMs. The addressing comes from the surface mount Konami custom ‘053260’ at location 3E and the inputs to this chip were good, just no output. So had to replace the chip with one from another Konami board of that era, then the sound worked perfectly.
			<br>'''Cure:''' Replaced faulty ‘053260’ Konami custom chip at location 3E<br>


	<br>[[PCB_Repair_Index\|Back to PCB Repair Index]]		<br>[[PCB_Repair_Index\|Back to PCB Repair Index]]

Brad at 02:37, 21 August 2012

2012-08-21T02:37:58Z

← Older revision		Revision as of 10:37, 21 August 2012
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	<caption class="summary" style=""><b>The Simpsons</b></caption>		<caption class="summary" style=""><b>The Simpsons</b></caption>
	<tr class=">		<tr class=">
	<td colspan="2" class="" style="text-align:center;">[[Image:marquee_the_simpsons.~~jpg~~\|200px]]</td>		<td colspan="2" class="" style="text-align:center;">[[Image:marquee_the_simpsons.png\|200px]]</td>
	</tr>		</tr>
	<tr class="">		<tr class="">

Brad: Created page with "==The Simpsons==
2012-08-21T02:37:47Z
Created page with "==The Simpsons== <p><table class="infobox vevent" style="width:22em;" cellspacing="5"> <caption class="summary" style=""><b>The Simpsons</b></caption> <tr class="> <td colspa..."
New page
==The Simpsons==

<p><table class="infobox vevent" style="width:22em;" cellspacing="5">
<caption class="summary" style=""><b>The Simpsons</b></caption>
<tr class=">
<td colspan="2" class="" style="text-align:center;">[[Image:marquee_the_simpsons.jpg|200px]]</td>
</tr>
<tr class="">
<th scope="row" style="text-align:left; white-space: nowrap;">PCB Image</th>
<td class="" style="">Reserved</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/3136-VectorGlow VectorGlow]<br>
'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/24440-Konami-s-The-Simpsons-Repair-Log The Simpsons PCB Repair]<br>
<br>

<br>[[PCB_Repair_Index|Back to PCB Repair Index]]
The Simpsons