n5x Posted March 16, 2011 Share Posted March 16, 2011 I have a 7800 (wont power on)that has a blown capacitor in the upper right hand corner by the power connector. Unfortunately the label is gone can anyone tell me what the value and voltage of that capacitor was thanks. Quote Link to comment Share on other sites More sharing options...
n5x Posted March 16, 2011 Author Share Posted March 16, 2011 I have a 7800 (wont power on)that has a blown capacitor in the upper right hand corner by the power connector. Unfortunately the label is gone can anyone tell me what the value and voltage of that capacitor was thanks. I found it was a 2200 uf 25 volt electrolytic capacitor and it working again Quote Link to comment Share on other sites More sharing options...
nathanallan Posted March 16, 2011 Share Posted March 16, 2011 Great to read that you fixed it! Did you spend most of the morning on it or were you able to find it out right away? Just looking at the times of the posts above; quick diagnosis and fixes are cool. Quote Link to comment Share on other sites More sharing options...
n5x Posted March 17, 2011 Author Share Posted March 17, 2011 Great to read that you fixed it! Did you spend most of the morning on it or were you able to find it out right away? Just looking at the times of the posts above; quick diagnosis and fixes are cool. I could tell at least that was wrong the cap was swollen and the label had melted away. Luckily I found a piture someone took of the board on the web so I figured out what to replace it with. So I took a chance and replaced it and the board worked. I guess the cap got old or took some kind of a surge. I'm leaning toward surge since I also had to replace the cap and the power adapter. Quote Link to comment Share on other sites More sharing options...
gdement Posted March 17, 2011 Share Posted March 17, 2011 The original is actually 2200uF 16v, but 25v is fine (I used that on mine also). That cap is on the input from the adapter which is only something around 9-12v. It's just a generic 85C cap, I'd use a long-life rated 105C cap to replace it, just because we want these things to work until we die. Quote Link to comment Share on other sites More sharing options...
n5x Posted March 17, 2011 Author Share Posted March 17, 2011 The original is actually 2200uF 16v, but 25v is fine (I used that on mine also). That cap is on the input from the adapter which is only something around 9-12v. It's just a generic 85C cap, I'd use a long-life rated 105C cap to replace it, just because we want these things to work until we die. I like that idea Quote Link to comment Share on other sites More sharing options...
Like us on Facebook
Follow us on Twitter
AtariAge on Instagram
Watch us on YouTube
Chat on Discord
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.