Fried Genesis?
Someone has been telling me about how he might have put too much voltage into his Sega Genesis. (Details available if necessary.)
Simply put, if this is the case, is there an easily-replaceable fuse within the Genesis? Or is it probably gone for good?
"There is much pleasure to be gained from useless knowledge." --Bertrand Russel (attributed)
Taste anything like fried coke or twinkie?
U GAIZ JUST DONT LIKE CHANGE , (builds a artificial foundation here)
If the system doesn't power on at all,and you are totally for sure that the problem relies on the actual system and not in the power supply, I would first try replacing the IC power regulator(7805)....
Last edited by ooXxXoo; 05-20-2008 at 01:06 AM.
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The 7805 would be my guess as well. Luckily they're easy to get and replace. Radio Shack usually has them.
So, it's just a matter of opening it up, pulling out the old IC, and putting the new one in? No desoldering necessary?
"There is much pleasure to be gained from useless knowledge." --Bertrand Russel (attributed)
Yes, soldering is necessary.
How much voltage is "too much"? The 7805 has a fairly wide operating range. If too much was waaaay too much, there may be bigger problems downstream.
Genesis units are like goldfish anyway. Just flush it and get another one
Fair enough... I think this was a 115V Genesis plugged into a 240V outlet. (I guess I should have mentioned that first.) Lost cause? Or maybe the PSU just blew?Originally Posted by FABombjoy
Last edited by J'orfeaux; 05-20-2008 at 02:05 PM.
"There is much pleasure to be gained from useless knowledge." --Bertrand Russel (attributed)
If you open it up, the regulator is probally going to be the part that's all charred looking. Do you hear pieces inside if you shake it? I've seen regulators blow pieces off when they go. If that's all it damaged then repairs should be pretty cheap and easy. You'd probally just need a soldering iron.
If that's the case I think that it's the PSU. Get a PSU that has a 110V input rating and and output rating that matches the output required by your Genesis:
Genesis 1: 9V DC 1.2A, coaxial 5.5mm/2.1mm DC plug (Radioshack Adaptaplug M) center negative
Genesis 2: 10V DC 850mA, EIAJ-02 coaxial 4mm/1.7mm plug (Radioshack Adaptaplug B) center positive
Genesis 3: 10V DC 300mA, EIAJ-02 coaxial 4mm/1.7mm plug (Radioshack Adaptaplug B) center positive
EDIT: corrected Genesis 1 polarity
Last edited by izarate; 05-22-2008 at 12:59 AM.
Let it be known that izarate is wrong on one thing.
Genesis 1 is center NEGATIVE.
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