AtariGeezer Posted July 14, 2014 Share Posted July 14, 2014 Do you have a volt/ohm meter? Quote Link to comment Share on other sites More sharing options...
Polish Don Posted July 14, 2014 Author Share Posted July 14, 2014 No. No meters at all Quote Link to comment Share on other sites More sharing options...
galax Posted July 14, 2014 Share Posted July 14, 2014 I would invest in a cheap multimeter if you're going to spend any time at all poking around inside electronics. Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted July 14, 2014 Share Posted July 14, 2014 No. No meters at all You could use a magnifying glass under good lighting to look at the solder connections as an alternative for now... Quote Link to comment Share on other sites More sharing options...
BillC Posted July 14, 2014 Share Posted July 14, 2014 For reference: Here's another thread about The Impossible -> http://atariage.com/forums/topic/176239-atari-800-rom-mod-question/ His board is not an Omnimon, that upgrade uses an entire personality board replacement... Not necessarily, I believe you are thinking of the RAMROD MMOS with Omnimon OS installed. There was also an Omnimon Piggyback board that plugged into 1 OS ROM socket on the 400 mainboard or the 800 personality board. Below is an Omnimon Piggyback Board installed on an 800 personality board Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted July 15, 2014 Share Posted July 15, 2014 Not necessarily, I believe you are thinking of the RAMROD MMOS with Omnimon OS installed. There was also an Omnimon Piggyback board that plugged into 1 OS ROM socket on the 400 mainboard or the 800 personality board. Below is an Omnimon Piggyback Board installed on an 800 personality board Yep, the RAMROD MMOS is what I was thinking about. Never seen the Omnimon Piggyback Board before... Quote Link to comment Share on other sites More sharing options...
Polish Don Posted July 16, 2014 Author Share Posted July 16, 2014 Well, I think I found the problem !! I was able to take it apart and found this on the power board.. Should I try and clean (and if so, with what?) it or just get a replacement ???? Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted July 16, 2014 Share Posted July 16, 2014 Is that soda that got spilt in there or does the bottom (foil side) look just as bad? If you have burnt traces on the bottom, you might want to consider getting a new board... Quote Link to comment Share on other sites More sharing options...
KLund1 Posted July 16, 2014 Share Posted July 16, 2014 By the way, one more question. Am I correct in assuming that my 800 is #512 produced ? It's a ink stamped number on the bottom. Did you get a reply about this number? I got an early 800 and am not sure about this same number. Quote Link to comment Share on other sites More sharing options...
Polish Don Posted July 16, 2014 Author Share Posted July 16, 2014 Did you get a reply about this number? I got an early 800 and am not sure about this same number. No, not so far. Quote Link to comment Share on other sites More sharing options...
Polish Don Posted July 16, 2014 Author Share Posted July 16, 2014 Is that soda that got spilt in there or does the bottom (foil side) look just as bad? If you have burnt traces on the bottom, you might want to consider getting a new board... No, the bottom is clean. It not soda, etc. I'm using contact cleaner and a old tooth brush and a lot of effort to get it to come off. Quote Link to comment Share on other sites More sharing options...
+DrVenkman Posted July 16, 2014 Share Posted July 16, 2014 No, the bottom is clean. It not soda, etc. I'm using contact cleaner and a old tooth brush and a lot of effort to get it to come off. I'm pretty sure that's dielectric fluid from a leaking capacitor. Clean the board and replace those caps and I bet your 800 comes back to life. Quote Link to comment Share on other sites More sharing options...
Polish Don Posted July 16, 2014 Author Share Posted July 16, 2014 I'm pretty sure that's dielectric fluid from a leaking capacitor. Clean the board and replace those caps and I bet your 800 comes back to life. Any idea where I can get them? Radio Shack ? Quote Link to comment Share on other sites More sharing options...
russg Posted July 19, 2014 Share Posted July 19, 2014 Any idea where I can get them? Radio Shack ? You can try those capacitors. Or. You can get an entire 800 power board from Best for about $20. 408-278-1070 afternoons Pacific time. Quote Link to comment Share on other sites More sharing options...
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