bikeguychicago Posted January 31, 2018 Share Posted January 31, 2018 Is there a guide somewhere that explains how to replace the 2-port BIOS with the 4-port one in a 2-port console? I bought one from Console 5 and cracked open the case but I'm having issues figuring out how to get the shielding off for one. Yep, I'm a 5200 repair noob. Please be kind. Quote Link to comment Share on other sites More sharing options...
+-^CrossBow^- Posted January 31, 2018 Share Posted January 31, 2018 To remove the shielding you need some needle nose pliers and you need to carefully twist the metal tabs back to be flat and parallel to the shielding side they are on. Once you have them all straightened out, then you carefull start to pull up on the shielding until it yields to your might. Once you have the shielding off it will be a cakewalk. 1 Quote Link to comment Share on other sites More sharing options...
bikeguychicago Posted February 1, 2018 Author Share Posted February 1, 2018 I was finally able to get the sheilding off and the BIOS replaced. I tested Pitfall with top shielding off and it worked. However, after I reinstalled the top shielding, I tried it again and now I am getting no power to the unit. No red light, no picture. Is there anything I can check here or did I fry my system? Quote Link to comment Share on other sites More sharing options...
+-^CrossBow^- Posted February 1, 2018 Share Posted February 1, 2018 If you are sure the shielding is in place correctly then it is possible the chip by the power switch button could have died. These old consoles are very static prone as well. ESD is a very real thing and it is the reason that Colecovision controller ICs mess up as well as the 5200's controller chips. Anyway, take the cover back off and see if it will fire back up. If it does, then the shielding is making contact with somthing it shouldn't be causing a short. Quote Link to comment Share on other sites More sharing options...
zylon Posted February 2, 2018 Share Posted February 2, 2018 I've also seen where a little too much force used to pry the board off of the locating pins causes a minor crack in the area of the little IC near power switch. A little reflow usually fixes it. Quote Link to comment Share on other sites More sharing options...
Lynxpro Posted February 3, 2018 Share Posted February 3, 2018 Willie of Arcade USA just did a video on it on Ye Olde YouTube. Quote Link to comment Share on other sites More sharing options...
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