What happen?

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Par meits

Scribe (6543)

Portrait de meits

14-07-2013, 00:34

With a broken ROM it could be possible to check if it works as a stand alone SCC Wink

Par W76NearDark

Paladin (684)

Portrait de W76NearDark

14-07-2013, 00:43

Yep tried that already, but no result. Most likely due to an error in the messed up circuitry.

Par meits

Scribe (6543)

Portrait de meits

14-07-2013, 01:16

Well, at least the pcb won't be destroyed that easily... And even if, it won't be too hard to fix that... That an eprom and a donor SCC could do the trick... And don't forget the row of (seemingly Konami only) resistors...

You go W Big smile

Par Gradius2

Hero (652)

Portrait de Gradius2

14-07-2013, 08:04

You need to remove the ROM to test the SCC as standalone. Even if ROM is "dead" you'll need to remove it to not interfer with SCC.

Par Manuel

Ascended (19465)

Portrait de Manuel

14-07-2013, 11:54

Don't replace anything without first confirming it's actually broken...

Par Jipe

Paragon (1614)

Portrait de Jipe

14-07-2013, 12:35

the pin 24 is cutting for inhibit the rom
is solder to +5V by the resistor
you can sold a interruptor between the pin 24 of the rom and the pin 24 of the PCB

look at the pink wire if is a repair of broken in PCB

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