Seriously, I thought I torched the mobo in the process. I was trying out my Chinese rip-off version of the Hakko 852 rework station.
I actually tested it by removing caps, resistor IC's from an older PII mobo and an old ISA sound card. works really well. I just didn't take into account a 21 year old circuit board. Just below and to the right of the CPU, the board warped a little bit. I'd call it more of a bubble, however, the raised part is not flexible.
The 6809 came out relatively unscathed, just one mildly bent pin. Cleaning up the CPU solder pads proved to be the most difficult, and where I warped the board. I first tried to use the hot air to blow the solder from the holes (yeah, realized how stupid of an idea that was...). Then I tried to use some solder wick, which was pretty useless for this endeavor. What should have been the obvious solution, the dreaded solder sucker, came next. Hey, it worked, 'nuff said. Then it was back to the Hakko rip-off to solder the socket in. I can only say I love how fast this thing heats up, and how easy it is to solder small items with it.
Here are some pics:
Off to the left you can see just a wee bit of the ATX power supply.
Not not completely obvious to the untrained eye, thar she blows!!! That is a socketed 63C09EP working very little at this point...
Here's a pic of the ATX and the former resident of the CoCo3 mobo:
And here's a quick screen shot of it 'running.' I was too tired to dig out the MPI and hard drive stuf to really give it a go. I have 9 6309's left, so I'm sure I'll do this transplant again...
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4 comments:
Awesome! You got that sucker in there! Now, where do I send my board so you can do it? (evil grin)
I did get the "backup" CoCo 3 board desoldered. I didn't even try to desolder the chip, though. Just cut it out and then desoldered the remain pins with that desolder iron/sucker tool I bought from Jameco. Works pretty good. Haven't had time to solder in the socket and mount the 6309 yet, though. Now that the weather is getting nice, I'll be able to get back at it. Actually got excited about going at the CoCo mod again the other day... then wife reminded me I had to clean the garage first. Sheesh...
Very cool stuff and glad to see it up and running!
Angel's Luck,
Capt.
Angel's Luck,
Capt.
I need some more practice before I start hacking on someone else's board. The soldering the socket part took maybe 5 minutes. Then I let the board cool down to room temp before i tried to insert the 6309 and turn it on.
If I keep up at this pace, I'll be ready for the SuperBoard in about two-three weeks. I still have pics to post of the mounted mobo, Roy's VGA adapter mounted, approximate ATX position and a mobo cooling fan (not that it's really needed...).
I'm also waiting on someone to get me a scanned article on converting a Model III keyboard to a coco (my turn to flash an evil grin... ;) )
Yeah, see the thing about that article is... er... Hey, you managed it. And how ya gonna learn anything if folks are just scanner articles all the time with all the answers. sheesh! :P
(Actually, I never went out and bought a new scanner after I fried the last one. Complete forgot. Sorry 'bout that. Mea Culpa!)
Looking forward to seeing the final mountings and a step by step walk through. Gotta say Flight Sim II looks fantastic. Ain't VGA on a CoCo grand?
Angel's Luck,
Capt.
I figured shit had happened. Gotta take my digs where I can get them (evil grin). I really only wanted the article to double check my work , but, hey it's done, it works, that's all that matters, right?
So... when you gonna install that 6309 in your beast??? The hardest part is the removal of the 6809. After that, just let the board cool, solder in the socket,let the board cool, insert 6309 and your done...
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