Williams Defender help

digitalwack

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I hope someone can help me, before i scrap my defender board and just Mame this thing out of frustration. I picked up a defender on the cheap, but it is giving me major problems. It boots to a Ram error. Ive replaced all the ram chips with no luck. Anyone have any ideas? Thanks in advance!
 

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I hope someone can help me, before i scrap my defender board and just Mame this thing out of frustration. I picked up a defender on the cheap, but it is giving me major problems. It boots to a Ram error. Ive replaced all the ram chips with no luck. Anyone have any ideas? Thanks in advance!

dont feel bad,at least yours boots!.this is all mine is doing right now.stick with it,with help from the cool people on here you will get it working.
 

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Money Pit

I have not tried any other decoder chips. I hate to put a bunch of money into this game not knowing the exact issue
 
First thing you shoulda checked is your power supply voltages. What's your +5 lookin' like on all the boards/chips?

If you MAME it, don't ever come back 'round these parts, ya hear? :D
 
First thing you shoulda checked is your power supply voltages. What's your +5 lookin' like on all the boards/chips?

If you MAME it, don't ever come back 'round these parts, ya hear? :D

We don't take kindly to strangers MAMEing stuff 'round these parts, ya hear.
 
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