Unfortunately the only other step you can really take on that system is the RROD heat reflow trick on the system. I know from your description that your component cable has been tested, but the fact that you get any picture at all is very curious. The 4 lights are an indication of weak or no video signal (generally no signal), as I am sure you are already aware of, but I do have to ask if you have tried the console on another television to see if there is any difference.
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More drastic measure entail you replacing the motherboard and spoofing your dvd drive, which is not fun without the proper equipment and still costly leaving some people to go to the final step of replacing the system. Some resellers are nice enough to package the motherboard and the dvd drive daughter board together for around $50-60 so that you do not have to take the time to spoof your original drive. Just make sure that you get the right one to match your system.
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More drastic measures entail you replacing the motherboard and spoofing your dvd drive, which is not fun without the proper equipment and still costly leaving some people to go to the final step of replacing the system. Some resellers are nice enough to package the motherboard and the dvd drive daughter board together for around $50-60 so that you do not have to take the time to spoof your original drive. Just make sure that you get the right one to match your system.
Unfortunately the only other step you can really take on that system is the RROD heat reflow trick on the system. I know from your description that your component cable has been tested, but the fact that you get any picture at all is very curious. The 4 lights are an indication of weak or no video signal (generally no signal), as I am sure you are already aware of, but I do have to ask if you have tried the console on another television to see if there is any difference.
More drastic measure entail you replacing the motherboard and spoofing your dvd drive, which is not fun without the proper equipment and still costly leaving some people to go to the final step of replacing the system. Some resellers are nice enough to package the motherboard and the dvd drive daughter board together for around $50-60 so that you do not have to take the time to spoof your original drive. Just make sure that you get the right one to match your system.