Rockbox.org home
release
dev builds
extras
themes manual
wiki
device status forums
mailing lists
IRC bugs
patches
dev guide



Rockbox mail archive

Subject: RE: MP3 playing bug with recent versions of RB on H140

RE: MP3 playing bug with recent versions of RB on H140

From: Christopher Woods <christof_at_infinitus.co.uk>
Date: Mon, 25 Sep 2006 19:41:42 +0100

I might be wrong (please correct me if I am!) but from what I've seen of the
circuit board and the reset switch, with the device's casing off, I believe
the reset button is nothing more than a software button, insofar that it
doesn't actually break any circuit. To me, it looks like pressing it merely
instructs the power circuitry to perform a power cycle, just like pressing
the play button instructs the playback circuitry to begin playback (without
the covers and the buttons on, the reset and playback control buttons look
identical)... I've only ever had a hard lockup once, where I couldn't even
reset the device with the reset button, and that was when (I think) the
battery reached a pretty low point and at the same time the hard drive was
being accessed. I'd had my H140 for a while by then, at least a year and a
half, coming on two years, so it may have just been that the device was
getting towards the end of its life cycle (used almost daily)... Anyways, I
ended up having to take the entire device apart (good job I was in
University and had access to the right tools), but I had to take it apart
completely and short out the power pins leading into the PCB. Which meant
taking the hard drive out. With the device still running. Not good.

Once I did that and put it back together again, the device wouldn't boot at
all, but I took it home, plugged it in and left it charging overnight and in
the morning it powered up first time. I ended up getting a new one soon
after though, as I dropped it onto concrete from about three feet in the
air. Not clever.

I myself use an older build (cvs-060607) and aside from AAC playback not
being realtime (has that ever been fixed?) it works alright. I get
occasional lockups when I'm viewing JPG files and attempt to navigate back
out to the directory listing a little too 'fast'... It's ok though apart
from that.

But yes, I do believe that the reset button isn't a hardware switch at all,
to me it looked just like a software switch just like the other buttons on
the device.

-----Original Message-----
From: Monty Lilburn [mailto:monty_rox_at_bc.cx]
Sent: 25 September 2006 16:58
To: Rockbox development
Subject: Re: MP3 playing bug with recent versions of RB on H140

Hello,

You definitely bring up a good point as normal functionality of reset
buttons is that the circuit breaks and resets the unit. The reason I
thought something may be different in the H140's circuitry is because I
found a post by searching Google where someone's player froze and they too
couldn't get the reset to work even though it felt properly when pushing the
button. They thought their button worked and had to drain the battery to
reset. I thought I was experiencing the same problem!

However, I just tried resetting my player just now (while it is in normal
working order) and it wouldn't reset either. I am using a paper clip and
can feel the spring on the button working so it would seam it is pressing
though I obviously don't know what the contacts are doing behind the button.
I guess something must be up with the button then, though it doesn't explain
the MP3 playing freezing problem but thanks for helping me with this one!

Monty

On Mon, 25 Sep 2006, gl wrote:

>> Pressing various buttons for varying lengths of time and even hard
resets
>> via the reset button do not reset the player.
>
> Hey Monty, do you mean you've tried the pin-in-the-reset-hole and even
that
> doesn't work? I've never seen this on my H140, and can't see how that
could
> happen unless you have some hardware fault?
> --
> gl
>
Received on 2006-09-25


Page was last modified "Jan 10 2012" The Rockbox Crew
aaa