Difference between revisions of "PCB Repair Logs Scramble"
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'''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/23438-Scramble-Repair-Log Scramble) PCB Repair]<br> | '''Forum Thread:''' [http://www.aussiearcade.com.au/showthread.php/23438-Scramble-Repair-Log Scramble) PCB Repair]<br> | ||
<br> | <br> | ||
''' | '''Symptom:''' Text and sprites appearing in the wrong places on the screen. Landscape scrolling not working at all and no visible ship<br> | ||
'''Cure:''' 74LS138 at location 3D had bad outputs - replaced<br> | '''Cure:''' 74LS138 at location 3D had bad outputs - replaced<br> | ||
<br> | <br> | ||
'''Symptom:''' Board only played a brief | '''Symptom:''' Board only played a brief jingle on power-up and also 'jingles' when starting a game and firing<br> | ||
'''Cure:''' Bad 8255 at 1D - replaced<br> | '''Cure:''' Bad 8255 at 1D - replaced<br> | ||
<br> | <br> | ||
<br>[[PCB_Repair_Index|Back to PCB Repair Index]] | <br>[[PCB_Repair_Index|Back to PCB Repair Index]] | ||
Revision as of 13:04, 20 August 2012
Scramble
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| PCB Image | Reserved |
|---|---|
| Pin Out | Reserved |
Repairer: VectorGlow
Forum Thread: Scramble) PCB Repair
Symptom: Text and sprites appearing in the wrong places on the screen. Landscape scrolling not working at all and no visible ship
Cure: 74LS138 at location 3D had bad outputs - replaced
Symptom: Board only played a brief jingle on power-up and also 'jingles' when starting a game and firing
Cure: Bad 8255 at 1D - replaced
