gwarble
Well-known member
my new defender, pink background, no "initial tests..."
Hey everyone,
I picked up a new defender yesterday! decent condition, board problems and G07 chassis was pulled, switcher hacked in but pulled also, original ps intact and supposedly worked but was bypassed to diagnose board issues...
anyway, i haven't gotten my nose dirty yet digging into it, but i threw a switcher back in (wiring was nicely labeled!), moved it close to another machine and borrowed the monitor... i get the same result that the guy i got it from told me about, boots into defender like:
- red only rug pattern (x2), not multi colored like my robotron
- bootup sound
- blank screen for 3 or so seconds
- another bootup sound
- four leds blink twice
- defender attract mode with a pink background...
what should be a black background is all pink... obviously in the signal and not some monitor issue... and i get two rug patterns, blank, attract mode... in mame i get like 7 rug patterns, "all systems indicate ok", then attract
again i'm hoping someone knows off the top of their head, i haven't dug into it yet except:
- voltages are within 10%
- quick reseat of chips/connectors
- auto up or down, hitting advance goes to blank screen without any diag (but there is some weird hacked wiring around those switches so they need investigation)
my first guess is rom problem... but maybe someone can narrow it down closer with these details...
thanks, in case you were wondering, $75 delivered
- gwarble
Hey everyone,
I picked up a new defender yesterday! decent condition, board problems and G07 chassis was pulled, switcher hacked in but pulled also, original ps intact and supposedly worked but was bypassed to diagnose board issues...
anyway, i haven't gotten my nose dirty yet digging into it, but i threw a switcher back in (wiring was nicely labeled!), moved it close to another machine and borrowed the monitor... i get the same result that the guy i got it from told me about, boots into defender like:
- red only rug pattern (x2), not multi colored like my robotron
- bootup sound
- blank screen for 3 or so seconds
- another bootup sound
- four leds blink twice
- defender attract mode with a pink background...
what should be a black background is all pink... obviously in the signal and not some monitor issue... and i get two rug patterns, blank, attract mode... in mame i get like 7 rug patterns, "all systems indicate ok", then attract
again i'm hoping someone knows off the top of their head, i haven't dug into it yet except:
- voltages are within 10%
- quick reseat of chips/connectors
- auto up or down, hitting advance goes to blank screen without any diag (but there is some weird hacked wiring around those switches so they need investigation)
my first guess is rom problem... but maybe someone can narrow it down closer with these details...
thanks, in case you were wondering, $75 delivered
- gwarble
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