Rob Mitchell Posted January 11, 2004 Share Posted January 11, 2004 I have two 7800 consoles and only one 7800 power supply (with the propriatory (ugh) plug). And always fearful that I would lose, drop, break the 7800 power brick. So I finally ordered some parts from BGMicro and got a 1A 9vDC power supply with 2.1 mm barrel connector. I also got a 2.1 mm barrel power socket. It was an easy job to desolder the propriatory socket off the the 7800 circuit board. Then there are two holes through which to thread a nylon zip tie to hold the replacement barrel socket. I had to trim off some metal off the replacement socket to prevent the possibility of a nearby short. I soldered some jumper wires to the proper places. (Thanks CPUWIZ for the pic) I double checked the polarity of the wiring by tracing the circuit to the leads of the big capacitor nearby. Pulled the zip tie tight. And reassembled the case. Now I have a 7800 console with a standard socket and a power supply to match. Job done! BGMicro Part numbers: 9v DC 1A Power Supply, 2.1 mm barrel connector, positive center: PWR1167 $2.99 2.1 mm barrel type PC board receptacle: PWR1137 $0.49 Rob Mitchell, Atlanta, GA Quote Link to comment Share on other sites More sharing options...
VidGameKing Posted January 11, 2004 Share Posted January 11, 2004 Sound good Rob! how's it working out? Quote Link to comment Share on other sites More sharing options...
Rob Mitchell Posted January 11, 2004 Author Share Posted January 11, 2004 Works great! Now for a video out mod .. and I can be in serious business for my Cuttle Cart 2! Rob Mitchell, Atlanta, GA Quote Link to comment Share on other sites More sharing options...
sonic412781 Posted February 12, 2004 Share Posted February 12, 2004 I also changed the power input jack on my 7800, although I didn't use a zip tie (I did have to use the Dremel to widen the hole so the casing would fit over it) Quote Link to comment Share on other sites More sharing options...
Rob Mitchell Posted March 17, 2005 Author Share Posted March 17, 2005 BGMicro is out of stock of the PS and sockets .. So I had to resort to Radio Shack for parts. I used a Size K power jack (5.0mm OD and 2.1 mm ID) which accepts a barrel power plug. Part number 274-1565 for two. It is held in place by two small zip ties through the holes left by the original propriatory socket. To a generic 10v DC 800 mA power supply I soldered the same size barrel plug. Part number 274-1567 for two. And a Genesis power supply can work with this new plug. Now I have two modified 7800 decks. Dennis Debro will be getting his modified 7800 deck back and new power supply tomorrow. What is the advantage? You do not have to worry about the stupid propriatory power supply going on the fritz. Rob Mitchell, Atlanta, GA (not too far from Dennis Debro) Quote Link to comment Share on other sites More sharing options...
Albert Posted March 17, 2005 Share Posted March 17, 2005 Thanks for the update, and good timing, as I have at least one 7800 that I need to do this mod to. I have done a similar mod in the past using a 2600-style power connector, but those aren't the greatest and a barrel connector would be better. And that 7800 is now broken (don't know why), so time for another to go under the knife. Do you have any pictures of the connector attached to your board? Would be nice to see your handiwork. ..Al Quote Link to comment Share on other sites More sharing options...
DEBRO Posted March 17, 2005 Share Posted March 17, 2005 Now I have two modified 7800 decks. Dennis Debro will be getting his modified 7800 deck back and new power supply tomorrow. Excellent! Now I can play my new Pesco and Allia Quest games. Quote Link to comment Share on other sites More sharing options...
Rob Mitchell Posted March 17, 2005 Author Share Posted March 17, 2005 Do you have any pictures of the connector attached to your board? Sorry no .. My digital camera has some problems. But the RS barrel socket has two "ears" .. and there are two vacant holes after removing the original socket. So that makes for great tie down spots. Also I should mention that the RS socket is switched. For center positive: The outer solder tab is for (-) ground. The center pin tab (+) is obvious. The third solder tab is the switched one .. ignore it. Make sure that you place the socket with the pos tab up such that nothing gets shorted! Project Time: 10 minutes including removing the original socket with copper wick. Rob Mitchell, Atlanta, GA Quote Link to comment Share on other sites More sharing options...
Albert Posted March 17, 2005 Share Posted March 17, 2005 Do you have any pictures of the connector attached to your board? Sorry no .. My digital camera has some problems. But the RS barrel socket has two "ears" .. and there are two vacant holes after removing the original socket. So that makes for great tie down spots. Also I should mention that the RS socket is switched. For center positive: The outer solder tab is for (-) ground. The center pin tab (+) is obvious. The third solder tab is the switched one .. ignore it. Make sure that you place the socket with the pos tab up such that nothing gets shorted! Project Time: 10 minutes including removing the original socket with copper wick. Great, thanks for the additional information. I'll stop by Radio Shack this week and pick up the parts and modify one of my 7800 units so I can enjoy it again. If I remember, I'll take some before and after pictures. ..Al Quote Link to comment Share on other sites More sharing options...
Rob Mitchell Posted March 17, 2005 Author Share Posted March 17, 2005 I'll stop by Radio Shack this week and pick up the parts and modify one of my 7800 units so I can enjoy it again. If I remember, I'll take some before and after pictures. Cool! And it should be noted that all connections should be verified with a multimeter before switching on the power. Rob Mitchell, Atlanta, GA Quote Link to comment Share on other sites More sharing options...
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