John's Arcade Forum - Classic Arcade and Pinball Collecting and Restoring Discussion Forum - RETRO MAME - Nintendo Vs Forum
December 14, 2017, 08:06:47 AM *
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Author Topic: Garbled screen help-1980 Sega Gremlin space firebird  (Read 197 times)
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JasperQuibbs
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« on: June 20, 2017, 08:50:15 AM »

Hello everyone! I'm new to this forum. I recently got a space firebird cocktail from a friend. When I turn on the power the screen just shows random graphics and there's a sound playing on a loop. I've tested the voltages and checked the fuses and everything looks in order. Someone did modify it to coin up with a button but it does nothing. Any ideas?
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alby13
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« Reply #1 on: September 15, 2017, 07:43:02 PM »

It sounds like there is an issue with a component or components on the board. You checked the basics well. Time to get a little more advanced. Usually people test a cabinet by swapping out the game for another one that is known working, although I know that can be tough.
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-alby13
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egermanus
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« Reply #2 on: September 30, 2017, 04:47:30 AM »

Can you post a picture? Could be anything from bad ram to a broken trace.
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