Need Some Tips Repairing Donkey Kong Video 4 Board Set Repair Broken Legs Socket Chip

easy_rider

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Need Some Tips Repairing Donkey Kong Video 4 Board Set Repair Broken Legs Socket Chip

I have a 4 board dk set and its been having video issues.

I traced it to this small video chip which has some broken legs. I read about soldering and repairing legs on it with extra legs on spare or bad components. The chip was pretty rough when I pulled it out.

CIMG6757.jpg

CIMG6759.jpg


What size solder is used with a repair as small as this? also what size solder iron? I have a 30w cheapo one that seems to repeal the solder I have for it so I dont know how much help that will be. I have done some soldering before but was curious what other spare metal parts could be used to repair it since I dont have many extra socket chips laying around. also if there was a different repair all together I might try? the problem seems to be strictly this socket chip so I didnt want to do anything with the board. also this chip is extremely small so I did want to mention it.

Has anyone found a simpler solution in fixing legs as small as these? they seem to be smaller then most and Id really like to get this back up and running soon.

thanks for any help in advance
 
While you could repair it, I would just buy a chip from hobbyroms.

thanks but I dont see that chip on their page...? would a cut staple to size soldered to the chip broken leg work for connection? these legs are extremely small!
 
thanks but I dont see that chip on their page...? would a cut staple to size soldered to the chip broken leg work for connection? these legs are extremely small!

That's a bi-polar PROM. It a blank chip that has to be programmed. HobbyROMs has them. I've had Steph burn some for me in the past.

Edward
 
I see thanks for the info, which steph is that ? hobbyroms or a member here? sorry new to this
 
also would this be the one I need then for the video chip replacement I took a pic of

82s129 (256 x 4 Tri-Sate ) Bi-Polar Prom - $10.00
Actual (Compatible) Chip being sold is Intersil 5623

Used in games like Donkey Kong, Galaga, Centipede, Tempest, Warlords, etc...

X-refs are MMI 6301, TI 24S10, Harris 7611, AMD 27S21, NS 74S287, IM 5623
 
Get an IC socket, solder it into the board, insert the chip, then with some side cutters cut the legs off another chip at the chip body. Insert the cut leg into the holes where the missing leg or stumps are. Then solder them to the chip stumps, works a treat.
 
For something like that I usually get a machine pin socket, lie that chip on top and solder the legs to the holes. Takes 2 mins.
 
For something like that I usually get a machine pin socket, lie that chip on top and solder the legs to the holes. Takes 2 mins.

This. It is a very easy repair. For a chip missing so many legs, I'd definitely just solder it into a machine pin socket and be done with it. If it's only one or two broken legs, I'll clip the legs off a junk chip and solder them on, but for this many, I'd go the socket route. Just do what's said above - plug the chip into a machine pin socket, and solder it in - bridge the gaps where the broken legs won't reach with solder, occasionally have to use a bit of a component lead to make the gap. It's simple, and takes a minute or two.

Usually you have to do this on the Namco custom chips where the pins corrode off.

-Ian
 
This. It is a very easy repair. For a chip missing so many legs, I'd definitely just solder it into a machine pin socket and be done with it. If it's only one or two broken legs, I'll clip the legs off a junk chip and solder them on, but for this many, I'd go the socket route. Just do what's said above - plug the chip into a machine pin socket, and solder it in - bridge the gaps where the broken legs won't reach with solder, occasionally have to use a bit of a component lead to make the gap. It's simple, and takes a minute or two.

Usually you have to do this on the Namco custom chips where the pins corrode off.

-Ian

wow guys thanks for all the helpful replys yeah I tried some bootleg tricks which actually seemed to work for about 2mins but yeah Im gonna go the pin socket route, Im pretty positive that should solve the problem.

thanks again to everyone for the help, learned a few things
 
wow guys thanks for all the helpful replys yeah I tried some bootleg tricks which actually seemed to work for about 2mins but yeah Im gonna go the pin socket route, Im pretty positive that should solve the problem.

And if that doesn't work,
I can have a shiny new chip shipped to you in no time....

;-)

Steph
www.Hobbyroms.com
 
I use the legs of a resistor. Shove it into the socket with the broken leg, then solder the resistor leg onto the broken chip leg.
 
+1
Everytime I replace any bad resisters I clip off the leads to save just in case I need to repair chip legs-
Doing this saved my Galaga's life!

I use the legs of a resistor. Shove it into the socket with the broken leg, then solder the resistor leg onto the broken chip leg.
 
[ Back on-line... ]

Sorry for the slow reply.

Had Internet Provider problems for the last 24hrs
(...it's amazing how dependent we are of the Net now ! )

PM replied to, and chip ready to ship...

;-)

Cheers,
Steph
 
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