Help Wiring the Radica

meleniumshane90 · Post by **meleniumshane90** » Mon Feb 13, 2006 5:25 pm

I desolderd the rom chip on the radica genesis, however, the chip took a lot of the leads with it. I know I'm not screwed, but damn near. How can I solve this dilema? I can still "access" what the leads went to, but this is just a pain. Maybe someone can post some pictures here so I can see how and where these leads go. Maybe a map or schematic that shows the board and what pins go where on the board.

Please advise.

Oh, also, where the leads are on the board, I have no room to solder and the solder keeps spilling over onto the other tabs!! Is there an easy way to do this!!!!

Fanboy · Post by **Fanboy** » Mon Feb 13, 2006 5:29 pm

I would have kept the ROM chip connected and soldered the Cart-slot to the leads on that... Another problem might be the type of soldering iron you're using? What type is it. The one that's best for this stuff is a 15-Watt pencil iron IMO...

meleniumshane90 · Post by **meleniumshane90** » Mon Feb 13, 2006 5:47 pm

It's a 30+ Year old Weller Soldering Iron station. Just like the ones that plug directly into the wall but has a station. I've allready removed the chip, so what should I do from here to resolve my initial problem? Maybe you could post a picture of yours or a schematic of the board?

Fanboy · Post by **Fanboy** » Mon Feb 13, 2006 5:57 pm

I I'm really not the most expeirianced (sp?), but you might try a 15-watt pencil iron at RadioShack, they're about $5-$10... Good for light PCB work, doesn't melt solder to the point where it's uncontrollable

.

If all else fails, get a new one

...

meleniumshane90 · Post by **meleniumshane90** » Mon Feb 13, 2006 7:09 pm

You know that white "film" on below the removed rom chip? Can you sand that down to reveal the leads (or bare wires), if so what grit should I use. I have 60 through 150 grit.

vb_master · Post by **vb_master** » Mon Feb 13, 2006 8:02 pm

Use whatever.

meleniumshane90 · Post by **meleniumshane90** » Mon Feb 13, 2006 8:43 pm

I sanded down the "film" and it did expose 99% of the wires. (I used 150 grit) Basically, now it's more the problem of "oh crap, this is going to take a very, very long time!". Maybe someone can tell me the best way to come about soldering the wires onto the board. I keep on spilling the solder onto the wrong pins, and It is very frustrating. I will not give up on this, I'm still working. I will finish this week though, with help from this forum. I can try submiting a picture tomaro to "seel-the-deal", and to close up any loose ends. Maybe you may see that you ran into these same problems yourself.

vb_master · Post by **vb_master** » Mon Feb 13, 2006 8:55 pm

Get really small gague wires and solder. Radio Shack has small gague solder, get some of the thinest you can. Also pick up some desoldering braid.

timmeh87 · Post by **timmeh87** » Tue Feb 14, 2006 12:24 am

get flux while youre at it. the small guage solder dosent have enough rosin in it to be effective.

intead of plastic-coted wire, consider using enameled wire. like this

the enamel will melt off as you solder to it, so you save yourself the trouble of stripping 60 little wires on both ends. its also a lot thinner because the enamel has almost no thickness

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Help Wiring the Radica

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