mrbomber's Falcon service blog

Blogs & guides and tales of woo by forum members.
Post Reply
Steve
Posts: 2052
Joined: Fri Sep 15, 2017 11:49 am

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
scsi_capacitor.jpg (551.57 KiB) Viewed 1161 times
Start with the easiest job, fix up the floppy header
broken fdd.jpg
broken fdd.jpg (415.47 KiB) Viewed 1161 times
fdd gone.jpg
fdd gone.jpg (469.23 KiB) Viewed 1161 times
new fdd.jpg
new fdd.jpg (589.12 KiB) Viewed 1161 times
Steve
Posts: 2052
Joined: Fri Sep 15, 2017 11:49 am

Re: mrbomber's Falcon service blog

Post by Steve »

New clock patch:

PXL_20211209_174421823.jpg
PXL_20211209_174421823.jpg (583.56 KiB) Viewed 1014 times
PXL_20211209_175331378.MP.jpg
PXL_20211209_175331378.MP.jpg (549.68 KiB) Viewed 1014 times
PXL_20211209_182238767.MP.jpg
PXL_20211209_182238767.MP.jpg (561.27 KiB) Viewed 1014 times
PXL_20211210_194621391.MP.jpg
PXL_20211210_194621391.MP.jpg (476.99 KiB) Viewed 1014 times
Steve
Posts: 2052
Joined: Fri Sep 15, 2017 11:49 am

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
PXL_20211213_145852652.MP.jpg (520.15 KiB) Viewed 961 times
Here I can see some bridged pins
PXL_20211213_150142780.jpg
PXL_20211213_150142780.jpg (266.64 KiB) Viewed 961 times
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
PXL_20211213_154433182.jpg (340.67 KiB) Viewed 961 times
Okay clock pin re-patched. Now check under the board.
PXL_20211213_163614748.MP.jpg
PXL_20211213_163614748.MP.jpg (381.42 KiB) Viewed 961 times
One of the via patch cables done previously are just sticking out quite far and doesn't look soldered properly.
PXL_20211213_163142542.jpg
PXL_20211213_163142542.jpg (423.07 KiB) Viewed 961 times
Okay that's fixed now...
PXL_20211213_163344529.jpg
PXL_20211213_163344529.jpg (314.07 KiB) Viewed 961 times
Yay! passing all tests now!
PXL_20211213_173226891.jpg
PXL_20211213_173226891.jpg (354.27 KiB) Viewed 961 times
PXL_20211213_173517653.jpg
PXL_20211213_173517653.jpg (468.22 KiB) Viewed 961 times
PXL_20211213_173930834.jpg
PXL_20211213_173930834.jpg (469.75 KiB) Viewed 961 times
Steve
Posts: 2052
Joined: Fri Sep 15, 2017 11:49 am

Re: mrbomber's Falcon service blog

Post by Steve »

Just testing the new floppy IDC header, working great!

PXL_20211213_180526470.jpg
PXL_20211213_180526470.jpg (364.1 KiB) Viewed 953 times
User avatar
mrbombermillzy
Posts: 817
Joined: Sun Jun 03, 2018 7:37 pm

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
P1040123.JPG (65.8 KiB) Viewed 887 times

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:
Steve
Posts: 2052
Joined: Fri Sep 15, 2017 11:49 am

Re: mrbomber's Falcon service blog

Post by Steve »

Brilliant!!!! Cheers for the update!
Post Reply

Return to “MEMBER BLOGS”