I've just received a lot of four demo games from B&C. I love all of the games, but discovered this morning that the small capacitor (if this is what it is) on the right side of the ROM chip on my "Road Riot 4WD" fell off...and the game will no longer work.
Can anyone tell me what part I need to get from Radio Shack in order to fix this myself?
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B&C EPROM help?
Started by davidcalgary29, Mar 29 2003 12:16 PM
9 replies to this topic
#1 OFFLINE
davidcalgary29
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Posted Sat Mar 29, 2003 12:16 PM
#2 OFFLINE
SuperDork3000
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Moonsweeper
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Posted Sat Mar 29, 2003 12:44 PM
davidcalgary29 said:
I've just received a lot of four demo games from B&C. I love all of the games, but discovered this morning that the small capacitor (if this is what it is) on the right side of the ROM chip on my "Road Riot 4WD" fell off...and the game will no longer work.
Can anyone tell me what part I need to get from Radio Shack in order to fix this myself?
Can anyone tell me what part I need to get from Radio Shack in order to fix this myself?
Flux Capacitor???....
#3 OFFLINE
CPUWIZ
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Rarity 11
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Posted Sat Mar 29, 2003 1:55 PM
davidcalgary29 said:
I've just received a lot of four demo games from B&C. I love all of the games, but discovered this morning that the small capacitor (if this is what it is) on the right side of the ROM chip on my "Road Riot 4WD" fell off...and the game will no longer work.
Can anyone tell me what part I need to get from Radio Shack in order to fix this myself?
Can anyone tell me what part I need to get from Radio Shack in order to fix this myself?
Show me a picture of it and I'll tell you what to replace it with.
#4 OFFLINE
davidcalgary29
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Posted Sun Mar 30, 2003 12:05 AM
Thanks, guys!
Bizdude's post on the "Complete the Rarity / Homebrew list" thread contains a picture of the AvP B&C homebrew cart; on the right side of the ROM chip is the brown oblong "thingie" that's fallen off of my chip. Now, most of the B&C carts have the same type of "thingie", but it is different on one of the carts that I do have...hence my confusion (and lack of willingness to go straight to Radio Shack, where I'd probably be greeted just with a blank stare).
Bizdude's post on the "Complete the Rarity / Homebrew list" thread contains a picture of the AvP B&C homebrew cart; on the right side of the ROM chip is the brown oblong "thingie" that's fallen off of my chip. Now, most of the B&C carts have the same type of "thingie", but it is different on one of the carts that I do have...hence my confusion (and lack of willingness to go straight to Radio Shack, where I'd probably be greeted just with a blank stare).
#5 OFFLINE
Mitch
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Posted Sun Mar 30, 2003 1:07 AM
It's kind of hard to see from that pic, but I would guess that it is a .1uf 50v ceramic disk capacitor. Does it say 104 on it?
Mitch
Mitch
#6 OFFLINE
myatari
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Posted Sun Mar 30, 2003 6:58 PM
Hope it was not my soldering?
I just solder the EPROM and cap on the top side of the board and trim the leads off below the surface so the Lynx is not scratched each time you insert the game. We used to put a piece of plastic on the back but that made it to hard to unplug. The cap is just a simple bypass cap. .1 to .01 would work fine. The game should work without the cap?????? Send it back and I will check it. There is a 90 day warranty. It is hard to solder on the top side of the board and the Lynx boards have very small pads making it even tougher. Plus my eyes are not what they used to be. Also I did not get much sleep that night. Also the TV was on. And the dogs were barking. ............Sorry you had a problem. Bruce
I just solder the EPROM and cap on the top side of the board and trim the leads off below the surface so the Lynx is not scratched each time you insert the game. We used to put a piece of plastic on the back but that made it to hard to unplug. The cap is just a simple bypass cap. .1 to .01 would work fine. The game should work without the cap?????? Send it back and I will check it. There is a 90 day warranty. It is hard to solder on the top side of the board and the Lynx boards have very small pads making it even tougher. Plus my eyes are not what they used to be. Also I did not get much sleep that night. Also the TV was on. And the dogs were barking. ............Sorry you had a problem. Bruce
#7 OFFLINE
davidcalgary29
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Posted Mon Mar 31, 2003 9:00 AM
myatari said:
Hope it was not my soldering?
I just solder the EPROM and cap on the top side of the board and trim the leads off below the surface so the Lynx is not scratched each time you insert the game. We used to put a piece of plastic on the back but that made it to hard to unplug. The cap is just a simple bypass cap. .1 to .01 would work fine. The game should work without the cap?????? Send it back and I will check it. There is a 90 day warranty. It is hard to solder on the top side of the board and the Lynx boards have very small pads making it even tougher. Plus my eyes are not what they used to be. Also I did not get much sleep that night. Also the TV was on. And the dogs were barking. ............Sorry you had a problem. Bruce
I just solder the EPROM and cap on the top side of the board and trim the leads off below the surface so the Lynx is not scratched each time you insert the game. We used to put a piece of plastic on the back but that made it to hard to unplug. The cap is just a simple bypass cap. .1 to .01 would work fine. The game should work without the cap?????? Send it back and I will check it. There is a 90 day warranty. It is hard to solder on the top side of the board and the Lynx boards have very small pads making it even tougher. Plus my eyes are not what they used to be. Also I did not get much sleep that night. Also the TV was on. And the dogs were barking. ............Sorry you had a problem. Bruce
Oh, well now, I certainly don't blame you -- things can get knocked about during transport. I'll just send that cart back to you with my next order!
#8 OFFLINE
davidcalgary29
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Posted Wed Apr 2, 2003 1:25 PM
"Road Riot 4WD" just needed a good cleaning -- it now plays perfectly! I guess that capacitor isn't needed after all to make the cart work. Can someone tell me what purpose they serve on homebrew EPROMS?
#9 OFFLINE
atarifan49
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Dragonstomper
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Posted Wed Apr 2, 2003 3:56 PM
Quote
"Road Riot 4WD" just needed a good cleaning -- it now plays perfectly! I guess that capacitor isn't needed after all to make the cart work. Can someone tell me what purpose they serve on homebrew EPROMS?
A capacitor basicly serves the function of blocking DC voltages and allow AC voltages to pass through (filtering) or used as a means of storing electrical energy.
The capacitors used for the cartridges are called bypass capacitors. They're typically of the value of .01 or .1 uf (microfarads). They're used to filter out any remaining fluctuations, or ripple, from the DC supply voltages. It is recommended in circuit design to have one of these capacitors fore each logic chip on a board. The capacitors are placed as close as possible to the component they are filtering the DC voltage for.
Here's a web page that can go into more detail:
http://www.seattlero...n97/basics.html
Glenn
#10 OFFLINE
davidcalgary29
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Posted Wed Apr 2, 2003 6:12 PM
Thanks. That was actually quite educational! I now have a new appreciation for those "ugly brown things" that I thought had no practical use at all...
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