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Both Lynx 2 died simultaneously, please help


vetteguy112233

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I recapped a free Lynx 2 about 2 years ago and it would power on, but the screen had odd graphics patterns so I gave up on it thinking it was an LCD issue. Recently I picked up a functioning Lynx 2 with 40 games and decided to swap parts between the two to see if I could find the problem with the old one. I used the newer systems main board and it worked prefect, so I knew it was something with the older ones main board. Upon reassembly neither of them work now, they are both dead, no back light, no power light. Im using an official Atari power adapter which I've checked with my meter and it's working properly. I've also tried 6 NEW batteries and get the same thing. I found the mosfet bypass trick and ran a wire from battery negative terminal to headphone negative and still get nothing on either with power adapter or batteries. During all of this swapping I did get they older one to randomly turn on, but it stopped working again.

 

I also checked the 3 pins on the board where the adapter is plugged into and get 13 volts at these terminals.

 

Please help me figure out what terminals to test with my meter and what voltages to expect. And if I do or don't have power there, what the problem might be.

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Note that with some Lynx 2's the screens are not interchangeable. I've got examples of working Lynx 2 systems where if I swap the screen from one to the other they do not work! LX NET spotted the same thing also! Not sure if its a revision difference, I vaguely remember the chap that created Zaku worked out some more info about it I think, and I think LX NET has something on his website about the issue. But that might not be your problem. That said, do what cowdog360 has suggested - if you've got more than 5v showing you've probably killed the screen etc. One of the problems with swapping parts is - if one Lynx has overvoltage failure (ie. 5v is at 6,7,8 or 9v) you can kill the screen connected to it (I think), so you might have inadvertantly killed the working screen connecting it to a over voltage mobo. The flex ribbon and screen ribbon making a bad connection can also give you a dead Lynx 2.

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I'll measure c41 tonight and as for swapping LCD's everything worked perfect at the time. Upon reassembly they were both dead, but with constant reassembly I did get the older one to work but it went off again. I'm starting to wonder if it's bit the black ribbon cable, the black terminals seem scratched off. I'm thinking of trimming the cable

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