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mrbomber's Falcon service blog

Blogs & guides and tales of woo by forum members.
Steve
Posts: 3294
Joined: 15 Sep 2017 11:49

mrbomber's Falcon service blog

Post by Steve »

I'm doing some work on @mrbombermillzy's Falcon, namely: removing old clock patch, installing exxos clock patch, fit new floppy header, investigate DSP issues.

Link to mobo information here
I've always wondered what this SCSI capacitor mod was for, it's on most C-Lab falcons, @mikro do you know? thx
scsi_capacitor.jpg
Start with the easiest job, fix up the floppy header
broken fdd.jpg
fdd gone.jpg
new fdd.jpg
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Steve
Posts: 3294
Joined: 15 Sep 2017 11:49

Re: mrbomber's Falcon service blog

Post by Steve »

New clock patch:

PXL_20211209_174421823.jpg
PXL_20211209_175331378.MP.jpg
PXL_20211209_182238767.MP.jpg
PXL_20211210_194621391.MP.jpg
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Steve
Posts: 3294
Joined: 15 Sep 2017 11:49

Re: mrbomber's Falcon service blog

Post by Steve »

Time to investigate the DSP issues. Beforehand the DSP was not working at all, failing all tests. It was previously replaced by someone and some traces were patched.
I'm not quite happy with the soldering
PXL_20211213_145852652.MP.jpg
Here I can see some bridged pins
PXL_20211213_150142780.jpg
I've cleaned up the soldering, removed any bridges and removed the patch for the clock pin because I didnt like the look of it. I've pulled the clock pin up where I'll run a patch cable to.
PXL_20211213_154433182.jpg
Okay clock pin re-patched. Now check under the board.
PXL_20211213_163614748.MP.jpg
One of the via patch cables done previously are just sticking out quite far and doesn't look soldered properly.
PXL_20211213_163142542.jpg
Okay that's fixed now...
PXL_20211213_163344529.jpg
Yay! passing all tests now!
PXL_20211213_173226891.jpg
PXL_20211213_173517653.jpg
PXL_20211213_173930834.jpg
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Steve
Posts: 3294
Joined: 15 Sep 2017 11:49

Re: mrbomber's Falcon service blog

Post by Steve »

Just testing the new floppy IDC header, working great!

PXL_20211213_180526470.jpg
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mrbombermillzy
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Joined: 03 Jun 2018 19:37

Re: mrbomber's Falcon service blog

Post by mrbombermillzy »

And here we are, all safely delivered and re-installed at home (very hastily, I might add):

P1040123.JPG

Just keeping this little critter occupied (currently watching the Hmmm... demo) was worth the price! :lol:

(Sorry about the blurry picture; too many 'sticky paws' on the lens I'm guessing. I wonder who would have done that?)

Many thank Steve! Just made my Christmas!! :thumbup:
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Steve
Posts: 3294
Joined: 15 Sep 2017 11:49

Re: mrbomber's Falcon service blog

Post by Steve »

Brilliant!!!! Cheers for the update!

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