PCB Repair Logs Toki - Revision history

Brad at 00:34, 7 February 2013

2013-02-07T00:34:26Z

← Older revision		Revision as of 08:34, 7 February 2013
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	__TOC__		__TOC__
	<br>		<br>
	~~'''~~Board 1~~'''~~		=== Board 1 ===

	'''Repairer:''' [http://www.aussiearcade.com.au/member.php/1983-Womble Womble]<br>		'''Repairer:''' [http://www.aussiearcade.com.au/member.php/1983-Womble Womble]<br>
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	<br>		<br>

	~~'''~~Board 2~~'''~~		=== Board 2 ===

	'''Repairer:''' [http://www.aussiearcade.com.au/member.php/3590-cal2 cal2]<br>		'''Repairer:''' [http://www.aussiearcade.com.au/member.php/3590-cal2 cal2]<br>

Brad at 00:33, 7 February 2013

2013-02-07T00:33:41Z

← Older revision		Revision as of 08:33, 7 February 2013
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	<tr class=">		<tr class=">
	<td colspan="2" class="" style="text-align:center;">[[Image:marquee_toki.jpg\|200px]]</td>		<td colspan="2" class="" style="text-align:center;">[[Image:marquee_toki.jpg\|200px]]</td>
			</tr>
			<tr class="">
			<th scope="row" style="text-align:left; white-space: nowrap;">Manufacturer</th>
			<td class="" style="">[[PCB_Manufacturers_TAD_Corporation\|TAD Corporation]]</td>
			</tr>
			<tr class="">
			<th scope="row" style="text-align:left; white-space: nowrap;">Year</th>
			<td class="" style="">1989</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 04:02, 30 August 2012

2012-08-30T04:02:48Z

← Older revision		Revision as of 12:02, 30 August 2012
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	'''Board 2'''		'''Board 2'''
	~~<br>~~
	'''Repairer:''' [http://www.aussiearcade.com.au/member.php/3590-cal2 cal2]<br>		'''Repairer:''' [http://www.aussiearcade.com.au/member.php/3590-cal2 cal2]<br>
	'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/25496-Toki-repair-log Toki PCB Repair]<br>		'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/25496-Toki-repair-log Toki PCB Repair]<br>

Brad at 04:02, 30 August 2012

2012-08-30T04:02:32Z

← Older revision		Revision as of 12:02, 30 August 2012
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	<br>		<br>

	'''Board 2'''~~<br>~~		'''Board 2'''
	<br>		<br>
	'''Repairer:''' [http://www.aussiearcade.com.au/member.php/3590-cal2 cal2]<br>		'''Repairer:''' [http://www.aussiearcade.com.au/member.php/3590-cal2 cal2]<br>

Brad at 04:02, 30 August 2012

2012-08-30T04:02:21Z

← Older revision		Revision as of 12:02, 30 August 2012
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	Problem fixed tho! Mad game too!		Problem fixed tho! Mad game too!
	<br>		<br>
	'''Board 2'''
			'''Board 2'''<br>
	<br>		<br>
	'''Repairer:''' [http://www.aussiearcade.com.au/member.php/3590-cal2 cal2]<br>		'''Repairer:''' [http://www.aussiearcade.com.au/member.php/3590-cal2 cal2]<br>
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	'''Symptoms:''' the board would occasionnaly boot. When booting, it runs but without sound. Sometimes the game freezes.		'''Symptoms:''' the board would occasionnaly boot. When booting, it runs but without sound. Sometimes the game freezes.

	'''Solution:'''		'''Solution:'''<br>

	- bad soldering on 20 Mhz crystal near the 68000		- bad soldering on 20 Mhz crystal near the 68000
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	Now the game works perfectly with sound.		Now the game works perfectly with sound.
	<br>		<br>


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

Brad at 04:01, 30 August 2012

2012-08-30T04:01:56Z

@@ Line 15: / Line 15: @@
 </tr>
 </table></p>
 '''Repairer:''' [http://www.aussiearcade.com.au/member.php/1983-Womble Womble]<br>
@@ Line 32: / Line 35: @@
 Problem fixed tho! Mad game too!
 <br>[[PCB_Repair_Index|Back to PCB Repair Index]]

Brad at 05:26, 15 August 2012

2012-08-15T05:26:17Z

← Older revision		Revision as of 13:26, 15 August 2012
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	'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/15158-Toki-Repair Toki PCB Repair]<br>		'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/15158-Toki-Repair Toki PCB Repair]<br>
	<br>		<br>
			Board landed on my desk with a couple of faults, firstly it had no sound, secondly the game would freeze semi randomly.

			Random crash problem was a dry joint on the crystal, someone had attempted to resolder all 4 joints but hadnt done a very good job. Removed all old solder with desolder station and resoldered the lot. Board was then solid as a rock.

			Sound problem was slightly trickier, the amp on board was fine, touching its pins gave a buzzing noise and the volume pot worked too. Made up an audio probe and fed the output of the DAC chip into an external amplifier - I had sound, well the FM sounds, not the samples.

			The only thing between the DAC output and the AMP chip input was a custom SIP package, over a dozen pins, its looks like a small PCB covered in black plastic, you can see the component bulges in one face of this board.

			Luckily the owner had another Toki that had more serious issues, including no sound. On that board the DAC was dead so I chanced my luck, desoldered the SIP package and moved it to the other board. Flipped the power on and all sounds and samples were restored.

			I dont know what this little SIP board does, but I suspect its some form of audio mixer circuit. The FM sounds and samples come from separate parts of the audio section and come together at this chip before the merged audio hits the amp.

			Problem fixed tho! Mad game too!


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

Brad: Created page with "==Toki==
2012-08-15T05:25:29Z
Created page with "==Toki== <p><table class="infobox vevent" style="width:22em;" cellspacing="5"> <caption class="summary" style=""><b>Toki</b></caption> <tr class="> <td colspan="2" class="" s..."
New page
==Toki==

<p><table class="infobox vevent" style="width:22em;" cellspacing="5">
<caption class="summary" style=""><b>Toki</b></caption>
<tr class=">
<td colspan="2" class="" style="text-align:center;">[[Image:marquee_toki.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/1983-Womble Womble]<br>
'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/15158-Toki-Repair Toki PCB Repair]<br>
<br>

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