Difference between revisions of "PCB Repair Logs Ghost'n Goblins"
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Had a problem a month back my Ghost n Goblins decided to play up. | |||
All sprites were upside down but only in the sprite block, in other words the knight for example had his feet trampling his head. | |||
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[[File:Pcb repair ghostn goblins 1.jpg|400px]] | |||
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I had a spare board so with this I narrowed the problem to the video PCB (of course). The left side handles backgrounds the middle handles sprites and the right side handles some other crap... cant remember now. | |||
I started looking at the 273's and it did not take long to find one with a dead output on pin 9 at location 8J. I removed the chip and tested it in my USB tester and sure enough it failed, I then confirmed a worker and reinstalled the IC and tested. | |||
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[[File:Pcb repair ghostn goblins 3.jpg|400px]] | |||
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[[File:Pcb repair ghostn goblins 4.jpg|400px]] | |||
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Works perfect now!! | |||
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[[File:Pcb repair ghostn goblins 5.jpg|400px]] | |||
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For this repair I mainly used a logic probe and the ttl handbook so I could see the pinouts as I could not find the schematics for this PCB if anyone has it PM me so I can add it to my collection | |||
<br>[[PCB_Repair_Index|Back to PCB Repair Index]] | <br>[[PCB_Repair_Index|Back to PCB Repair Index]] | ||
Revision as of 12:19, 16 August 2012
Ghost'n Goblins
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| PCB Image | Reserved |
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| Pin Out | Reserved |
Repairer: GameDude
Forum Thread: Ghost'n Goblins PCB Repair
Had a problem a month back my Ghost n Goblins decided to play up.
All sprites were upside down but only in the sprite block, in other words the knight for example had his feet trampling his head.
I had a spare board so with this I narrowed the problem to the video PCB (of course). The left side handles backgrounds the middle handles sprites and the right side handles some other crap... cant remember now.
I started looking at the 273's and it did not take long to find one with a dead output on pin 9 at location 8J. I removed the chip and tested it in my USB tester and sure enough it failed, I then confirmed a worker and reinstalled the IC and tested.
Works perfect now!!
For this repair I mainly used a logic probe and the ttl handbook so I could see the pinouts as I could not find the schematics for this PCB if anyone has it PM me so I can add it to my collection
