Digest for sci.electronics.repair@googlegroups.com - 4 updates in 2 topics

root <NoEMail@home.org>: Jul 19 01:09PM

I have been using different variations of the Sansa Clip mp3 players for
several years. Sansa explicitly says that of those players that accept
a micro SD card, the maximum size of the card is 32GB. However, all the
players I have bought will, in fact, accept and address 64GB when these
devices are new.
 
In my experience the lifetime of Sansa players is only a couple of years.
The first thing that fails is the clip attachment. Shortly after the
clip fails something happens to the the circuitry that recognizes the
SD card. I thought the devices lost the ability to see the SD card. I
now find that those devices will still recognize a 32GB card after
once having been able to recognize a 64GB. In other words, it seems that
the high address bit of the circuitry fails in a way that Sansa knows
it will happen so they only advertise a 32GB capacity.
 
Does this seem in any way reasonable?
Michael Black <et472@ncf.ca>: Jul 19 10:34AM -0400

root <NoEMail@home.org>: Jul 19 03:59PM

> The card works, but you never see the extra memory. That's speculation.
> I have no idea why the larger cards stop working
 
> Michael
 
Thanks for responding. I did check the older devices and they did
see 64G from the start, at least those that I tried.
etpm@whidbey.com: Jul 19 09:04AM -0700

>> Eric
 
>Thanks - I'm convinced that's the entire problem with the 530-2. It probably hasn't been lubed in decades. What do you reckon I should use to remove hardened oil from within parts? The only chemicals I'm thinking that could attack this effectively are ammonia & bleach, but am hesitant to use those without knowing if it's ok to.
 
>NT
For jobs like yours I like to use kerosene. Actually, I use "Lamp
Oil". It's the stuff made for oil burning lamps and candles. I get the
unscented stuff. I like it better than kerosene mainly because it
doesn't smell bad. It doesn't dissolve hardened oil as fast as other
solvents but then it doesn't tend to harm things either. Sometimes all
you need is for the hardened oil to be flushed from the mechanism.
Then there is this soft goo that oozes from bearings and the like.
This goo can be removed by whatever is most convenient. After the lamp
oil has started to flush the old oil out just follow with new oil.
After you are sure the new oil has flushed out the lamp oil wipe up
any excess oil that has run out of the bearing surfaces.
Eric
You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page.
To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com.

No Response to "Digest for sci.electronics.repair@googlegroups.com - 4 updates in 2 topics"

Post a Comment