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Soundcard Not working...
Posted: Wed Apr 09, 2008 7:24 pm
by glasswool
Luna II sound card just makea a clicking sound, nothing works either in Scope 4.5 or XTC mode. The sample rate window shows the samplerate blinking on and off. Anyone know how to fix this prob without sending the card in for repairs?
Posted: Wed Apr 09, 2008 7:26 pm
by garyb
that's a bad sign. try reseating the card in the slot.
Posted: Wed Apr 09, 2008 7:59 pm
by glasswool
I did, even installed it on a new pc, same problem...
Any hardware engineers on this forum who can give me tips for a fix? I am based in India, and sending the card to Germany for repairs and back would take too long...
Posted: Wed Apr 09, 2008 8:25 pm
by garyb
if it's broken, you probably have no choice.
Posted: Wed Apr 09, 2008 11:03 pm
by arela
Use a magnifier to inspect all solderings etc.
Posted: Thu May 29, 2008 11:21 pm
by glasswool
Hello all,
I changed the low dropout regulator (2318) and the card is now WORKING AGAIN!!!
Posted: Thu May 29, 2008 11:24 pm
by the19thbear
COOOOL! how did you know that was the problem?
Posted: Fri May 30, 2008 5:44 pm
by capacitor
Congrats
That must have been interesting to diagnose! Any documentation/tips for the rest of us?
Posted: Fri May 30, 2008 10:40 pm
by arela
well done
Posted: Fri May 30, 2008 10:42 pm
by Me$$iah
Yup,
I think its fair to say, we're all pretty impressed by this.
well done good sir
Posted: Sat May 31, 2008 1:52 am
by hesnotthemessiah
glasswool wrote:Hello all,
I changed the low dropout regulator (2318) and the card is now WORKING AGAIN!!!
I was going to mention the low dropout regulator (2318).................
Posted: Sat May 31, 2008 2:28 am
by astroman
well, it's actually pretty simple...
the only thing you can do about the card, is the powersupply and analog components.
the rest, like the digital processing and custom array logic is out of reach anyway
caps, diodes and regulators are what you focus on -
but you definetely need good soldering tools and skills, seriously.
Trying to replace parts maually can render the card useless within seconds, as you might damage (hidden) layer interconnections
good job glasswool
cheers, Tom
Posted: Sat May 31, 2008 11:31 am
by garyb
yes, good job!
Posted: Sat May 31, 2008 1:51 pm
by siriusbliss
glasswool wrote:Hello all,
I changed the low dropout regulator (2318) and the card is now WORKING AGAIN!!!
dang regulators
PCB power supplies are often susceptible to power spikes (sometimes serve as a sort of fuse), so good catch on the fix, and check your building wiring, etc.
I'm glad it's fixed!
Greg