Falter Posted March 13, 2019 Share Posted March 13, 2019 Hey guys, So I'm trying to figure out this early 800 I have and so far nada. You power on, and with the composite out you get a solid white screen - the TV output just gives you a little less static. Nothing really seems to change matters, cartridge in, cartridge out. I even have a spare OS cart but nothing there either. I've removed and reseated every chip in the thing. I've checked the RAM chips in another computer that uses them. I've even taken a DMM and, with the cards plugged in one at a time, confirmed continuity between the topmost part of the card 'teeth' and the bottom where the socket pin is soldered in. Kind of dizzying work and I *may* have missed one, but all that I tested came back ok. I'm wondering if I should just buy a known good motherboard from Ebay or something just to test with, or a complete system... just to see if the cards are any good. When I first got a power supply for it it was doing something similar and if you pressed on the OS ROM card with a bit of force it'd work. I figured maybe the socket needed cleaning to so I did more cleaning but after that it was white screen of death forever. Would be grateful for any suggestions/advice. Quote Link to comment Share on other sites More sharing options...
Paul Westphal Posted March 13, 2019 Share Posted March 13, 2019 (edited) I have a drop in replacement sitting on my bench Tested with SuperSalt and running great. It was a 800 I bought off Ebay. Arrived in pieces, as did the 810. Caps are good and I cleaned it Well with Qtips and rubbing alcohol. ( as usual ) Edited March 13, 2019 by Paul Westphal Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted March 13, 2019 Share Posted March 13, 2019 dom(ntsc), pal, peritel? What video broadcast system are you using? Quote Link to comment Share on other sites More sharing options...
Falter Posted March 13, 2019 Author Share Posted March 13, 2019 NTSC Quote Link to comment Share on other sites More sharing options...
Falter Posted March 13, 2019 Author Share Posted March 13, 2019 Thank you.. I did a purchase on ebay and will see but if yours is still available I may come back to you. Appreciate the offer! I have a drop in replacement sitting on my bench 5470F329-2F92-4AD5-A6DE-E68D9D8BBFA3.jpeg Tested with SuperSalt and running great. It was a 800 I bought off Ebay. Arrived in pieces, as did the 810. Caps are good and I cleaned it Well with Qtips and rubbing alcohol. ( as usual ) Quote Link to comment Share on other sites More sharing options...
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