https://wiki.pcbs.com.au/index.php?action=history&feed=atom&title=PCB_Repair_Logs_Bombjack
PCB Repair Logs Bombjack - Revision history
2026-04-24T07:38:51Z
Revision history for this page on the wiki
MediaWiki 1.44.2
https://wiki.pcbs.com.au/index.php?title=PCB_Repair_Logs_Bombjack&diff=2484&oldid=prev
Brad at 02:28, 5 February 2013
2013-02-05T02:28:40Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:28, 5 February 2013</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l5">Line 5:</td>
<td colspan="2" class="diff-lineno">Line 5:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><tr class="></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><tr class="></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><td colspan="2" class="" style="text-align:center;">[[Image:marquee_bombjack.png|200px]]</td></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><td colspan="2" class="" style="text-align:center;">[[Image:marquee_bombjack.png|200px]]</td></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></tr></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><tr class=""></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><th scope="row" style="text-align:left; white-space: nowrap;">Manufacturer</th></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><td class="" style="">[[PCB_Manufacturers_Tehkan|Tehkan]]</td></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></tr></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><tr class=""></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><th scope="row" style="text-align:left; white-space: nowrap;">Year</th></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><td class="" style="">1984</td></ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></tr></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></tr></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><tr class=""></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><tr class=""></div></td></tr>
</table>
Brad
https://wiki.pcbs.com.au/index.php?title=PCB_Repair_Logs_Bombjack&diff=692&oldid=prev
Brad: Created page with "==Bombjack== <p><table class="infobox vevent" style="width:22em;" cellspacing="5"> <caption class="summary" style=""><b>Bombjack</b></caption> <tr class="> <td colspan="2" cl..."
2012-08-20T03:16:08Z
<p>Created page with "==Bombjack== <p><table class="infobox vevent" style="width:22em;" cellspacing="5"> <caption class="summary" style=""><b>Bombjack</b></caption> <tr class="> <td colspan="2" cl..."</p>
<p><b>New page</b></p><div>==Bombjack==<br />
<br />
<p><table class="infobox vevent" style="width:22em;" cellspacing="5"><br />
<caption class="summary" style=""><b>Bombjack</b></caption><br />
<tr class="><br />
<td colspan="2" class="" style="text-align:center;">[[Image:marquee_bombjack.png|200px]]</td><br />
</tr><br />
<tr class=""><br />
<th scope="row" style="text-align:left; white-space: nowrap;">PCB Image</th><br />
<td class="" style="">Reserved</td><br />
</tr><br />
<tr class=""><br />
<th scope="row" style="text-align:left; white-space: nowrap;">Pin Out</th><br />
<td class="" style="">Reserved</td><br />
</tr><br />
</table></p><br />
<br />
'''Repairer:''' [http://www.aussiearcade.com.au/member.php/3136-VectorGlow VectorGlow]<br><br />
'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/23424-Bombjack-Repair-Log Bombjack PCB Repair]<br><br />
<br><br />
'''Symptom:''' Three horizontal lines of white pixels towards the bottom of the display (bottom board)<br><br />
'''Diagnosis:''' Thought it was probably a video RAM problem but decided to see if the fault changed as the chips warmed up. Sure enough some of the pixels faded away so applied freezer spray to the suspects on the lower board. Sure enough the faded pixels came back good and strong when freezer spray was applied to the 6148 at location 4B. Tried piggy-backing a 2148 (I didn’t have any 6148’s) on top of that and that ‘fixed’ the fault, so removed the old 6148, popped in a socket and a new 2148<br><br />
'''Cure:''' Replaced faulty 6148 RAM at location 4B<br><br />
<br><br />
'''Symptom:''' All moving sprites are ‘shredded’ into vertical bars and data in one ‘bar’ is produced in the rest (bottom board)<br><br />
'''Cure:''' Pin 10 stuck low on the LS283 at location 5E – replaced<br><br />
<br><br />
'''Symptom:''' Horizontal lines (about half a character high) throughout the background graphics<br><br />
'''Cure:''' Bad output on pin 15 of the LS194 at 7K – replaced<br><br />
<br />
<br />
<br>[[PCB_Repair_Index|Back to PCB Repair Index]]</div>
Brad