PCB Repair Logs Wonderboy - Revision history

Brad at 02:35, 7 February 2013

2013-02-07T02:35:11Z

← Older revision		Revision as of 10:35, 7 February 2013
Line 4:		Line 4:
	<tr class=">		<tr class=">
	<td colspan="2" class="" style="text-align:center;">[[Image:marquee_wonderboy.jpg\|200px]]</td>		<td colspan="2" class="" style="text-align:center;">[[Image:marquee_wonderboy.jpg\|200px]]</td>
			</tr>
			<tr class="">
			<th scope="row" style="text-align:left; white-space: nowrap;">Manufacturer</th>
			<td class="" style="">[[PCB_Manufacturers_Sega\|Sega]]</td>
			</tr>
			<tr class="">
			<th scope="row" style="text-align:left; white-space: nowrap;">Year</th>
			<td class="" style="">1986</td>
	</tr>		</tr>
	<tr class="">		<tr class="">
Line 11:		Line 19:
	<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_Wonderboy\|Wonderboy]]</td>
	</tr>		</tr>

Brad at 04:29, 5 September 2012

2012-09-05T04:29:32Z

@@ Line 336: / Line 336: @@
 One more board left to fix - that one has everything ok except the enemy sprites are totally missing. Logic weirdy somewhere I would think.
 <br>
 [[PCB_Repair_Index|Back to PCB Repair Index]]

Brad at 01:33, 5 September 2012

2012-09-05T01:33:52Z

← Older revision		Revision as of 09:33, 5 September 2012
Line 290:		Line 290:

	===Board 4===		===Board 4===

			'''Repairer:''' [http://www.aussiearcade.com.au/member.php/1983-Womble Womble]<br>
			'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/14991-Wonderboy-Bootleg-Repair Wonderboy PCB Repair]<br>
	<br>		<br>
	Another Sega Wonderboy PCB saved from the scrap bin.		Another Sega Wonderboy PCB saved from the scrap bin.

Brad at 01:32, 5 September 2012

2012-09-05T01:32:58Z

← Older revision		Revision as of 09:32, 5 September 2012
Line 288:		Line 288:

	<br>		<br>

			===Board 4===
			<br>
			Another Sega Wonderboy PCB saved from the scrap bin.

			Problem - garbled graphics, game runs but everything except the sprites is scrambled.
			<br>
			<br>
			[[File:Pcb repair wonderboy 3 1.jpg]]
			<br>
			<br>

			[[File:Pcb repair wonderboy 3 2.jpg]]
			<br>
			<br>

			Fired it up, checked the RAM outputs with the logic probe, everything that should show activity was active. So moved onto the logic, and after 2 or 3 minutes burnt my arm on the RAM chips, these 3 were stinking hot. The 4th chip to the bottom left of the trio was barely warm to the touch.
			<br>
			<br>
			[[File:Pcb repair wonderboy 3 3.jpg]]
			<br>
			<br>
			Unsoldered them and it became clear how hot these had been getting, the board under each of them is pretty scorched, this board must have been left to cook for quite a while.

			<br>
			<br>
			[[File:Pcb repair wonderboy 3 4.jpg]]
			<br>
			<br>

			Cleared up the charring as best I could with PCB cleaner, didn't make a huge difference tho, fitted sockets, dropped in 3 salvaged 6116 chips and fired it up.
			<br>
			<br>
			[[File:Pcb repair wonderboy 3 5.jpg]]
			<br>
			<br>

			[[File:Pcb repair wonderboy 3 6.jpg]]
			<br>
			<br>

			One happy Wonderboy PCB

			One more board left to fix - that one has everything ok except the enemy sprites are totally missing. Logic weirdy somewhere I would think.
			<br>

	[[PCB_Repair_Index\|Back to PCB Repair Index]]		[[PCB_Repair_Index\|Back to PCB Repair Index]]

Brad at 01:26, 5 September 2012

2012-09-05T01:26:41Z

← Older revision		Revision as of 09:26, 5 September 2012
Line 252:		Line 252:
	'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/14991-Wonderboy-Bootleg-Repair Wonderboy PCB Repair]<br>		'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/14991-Wonderboy-Bootleg-Repair Wonderboy PCB Repair]<br>

	Have had some success repairing boards of late, one of my victories has been a Wonderboy ~~bootleg~~.		Have had some success repairing boards of late, one of my victories has been a Wonderboy.

	The game landed on my desk with an odd fault. All sprites and icons were totally missing, the splash screen icons were all the wrong colour and the border was beige instead of black. Other than that it was great		The game landed on my desk with an odd fault. All sprites and icons were totally missing, the splash screen icons were all the wrong colour and the border was beige instead of black. Other than that it was great

Brad at 01:26, 5 September 2012

2012-09-05T01:26:12Z

← Older revision		Revision as of 09:26, 5 September 2012
Line 247:		Line 247:

	<br>		<br>
			===Board 3===

	<br>[[PCB_Repair_Index\|Back to PCB Repair Index]]		'''Repairer:''' [http://www.aussiearcade.com.au/member.php/1983-Womble Womble]<br>
			'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/14991-Wonderboy-Bootleg-Repair Wonderboy PCB Repair]<br>

			Have had some success repairing boards of late, one of my victories has been a Wonderboy bootleg.

			The game landed on my desk with an odd fault. All sprites and icons were totally missing, the splash screen icons were all the wrong colour and the border was beige instead of black. Other than that it was great

			Someone had previously removed IC74 at 8M (an LS174), they had fitted a machine pinned socket and used half a reel of solder and a whole can of lacquer in the process. It was a globby mess, to rule out shorts I had to remove the lot. The IC tested ok so it was soldered in directly. One track didn't survive the process so a link wire was fitted. This didn't cure anything, but at least the board wasn't a mess.

			I initially was certain that the missing sprites would be a RAM problem, I was wrong, all ram lines were busy, and piggy backing known good RAM changed nothing. So I went over the board with the logic probe.

			Found an 74LS04 at 1N(IC97) had a floating output pin, piggybacking a new chip on it lit up the line and instantly restored the sprites. The old chip was binned and the new one soldered directly in.

			The border was still beige and the freeplay splash screen sprite was blue, I could find no other missing pins, other than ones that could be explained by their datasheets (either not connected, or unused input pins on hex or quad chips).
			<br>
			<br>
			[[File:Pcb repair wonderboy bootleg 2 1.jpg]]
			<br>
			<br>
			[[File:Pcb repair wonderboy bootleg 2 2.jpg]]
			<br>
			<br>

			Finally found an LS157 at L10 (IC77) that when piggybacked made the start screen go nuts. Turns out that piggy backing on that chip will only take effect from a cold start. Chopped it out, soldered in the new one and the game is now 100% fixed.
			<br>
			<br>
			[[File:Pcb repair wonderboy bootleg 2 3.jpg]]
			<br>
			<br>

			[[File:Pcb repair wonderboy bootleg 2 4.jpg]]
			<br>
			<br>

			The large black space in the top left is where the lives remaining icons go, the board was set to free play so nothing shows up there until you find a extra life powerup. When not in freeplay that area has the 4 faces for the 4 lives.

			The only problem now is that my wife keeps wanting to play it.

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

Brad at 06:29, 29 August 2012

2012-08-29T06:29:29Z

← Older revision		Revision as of 14:29, 29 August 2012
Line 7:		Line 7:
	<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="">~~Reserved~~</td>		<td class="" style="">[http://wiki.aussiearcade.com.au/index.php/File:Pcb_repair_wonderboy_1.jpg Wonderboy PCB]</td>
	</tr>		</tr>
	<tr class="">		<tr class="">

Brad at 06:28, 29 August 2012

2012-08-29T06:28:40Z

Show changes

Brad at 06:16, 28 August 2012

2012-08-28T06:16:48Z

Show changes

Brad: Created page with "==Wonderboy==
2012-08-28T06:09:57Z
Created page with "==Wonderboy== <p><table class="infobox vevent" style="width:22em;" cellspacing="5"> <caption class="summary" style=""><b>Wonderboy</b></caption> <tr class="> <td colspan="2" c..."
New page
==Wonderboy==
<p><table class="infobox vevent" style="width:22em;" cellspacing="5">
<caption class="summary" style=""><b>Wonderboy</b></caption>
<tr class=">
<td colspan="2" class="" style="text-align:center;">[[Image:marquee_wonderboy.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/31862-Wonderboy-Repairlog Wonderboy PCB Repair]<br>
<br>

<br>

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