Support and General Use > Hardware
Serious heat issue with Fuze V2
Beefy2k:
--- Quote from: nexekho on June 02, 2010, 04:52:51 AM ---I've also noticed that the original firmware now says "GOODBYE" when I turn it off; it never used to do this before I installed RB and even after reintroducing the firmware that used to be on the device it still comes up with it. Weird.
--- End quote ---
I have a V2 and the goodbye message was always there, both before and after installing RB. My guess is you just quit paying attention to the screen when the little animation faded away.
--- Quote from: nexekho on June 01, 2010, 09:30:44 PM --- this heat is coming from the very bottom left corner whenever the blue ring is on.
--- End quote ---
You can turn off the blue light in the settings. Have you tried that to see if it makes a difference in the heat levels? That info might help them troubleshoot the problem?
I turned off the blue ring on mine and turned down the brightness to almost its lowest level as soon as I installed RB just for battery life so I can not validate your issues.
cowkleaver:
I can verify that I have seen this same heat issue on my V2. Whatever is causing the issue, it persists across both RB and OF. I have tried "reset to factory" and other similar settings in the OF, reflashed the OF, reflashed RB, etc. and all have had no effect.
When I first noticed this problem I was listening to the radio feature (though I think this is unrelated). I was also going through the RB settings and playing with Backlight and Wheel Light options. I do not recall which menu I was in or what the settings were -- all I know is that I was increasing a setting. While performing this operation I noticed that the LCD started to flicker and the device started to become warm. I reset. The screen seems to go black at the times I would expect the backlight to be turning on and becomes visible when I would expect the backlight to be turning off.
As I mentioned before this behavior seems to persist. The fuze can get very hot now, and the battery is nearly drained. I'm somewhat reluctant to try and let it charge lest something decide to magic smoke release on me.
Let me know if anyone has any bright ideas, or if I can give any additional info that might help.
Thanks for your efforts.
--edit 1
After some quick charging it seems that changing the wheel light timer to anything but off in RB will cause the LCD to go black when the wheel turns on.
Adjusting the backlight intensity appears to have no effect and I'm beginning to suspect that this lack of control over the backlight intensity may be the best symptom to diagnose with.
--edit 2
As long as the backlight shuts off the device remains cool to the touch. The fuze is able to charge in RB. But when in OF the backlight does not turn off and the device becomes warm.
The best way to sum things up are that I no longer seem to have proper control of the backlight intensity, and that when the backlight is on the device appears to start getting hot.
HTH.
--
Kevin
funman:
Best thing you should do is replace the player, and try to get info on this problem from Sandisk if you can contact them
heyster:
I have also experienced an overheat issue similar to those described in this thread, but only with Rockbox. I've been using the Fuze with the original firmware for about a year. Been using RB for several weeks. Never experienced an overheat with the OF.
build r28081-100914 on a Fuze v2
Here's the story as much as I can recall...
I was setting up different configs thru several .cfg files. I already had one I called "default.cfg" with fairly middle-of-the-road settings and had added another with low backlight brightness and low audio volume called "night.cfg". The wheel light setting was 2 seconds for all of my configs.
Here's where it got interesting...
I was setting up "daylight.cfg" with full backlight brightness for daytime use. I had used this setting for maybe a minute, picked up the device and felt the intense heat from the back of the Fuze. I noticed the backlight changing brightness (not what I would call flickering as it was changing every few 100 ms or so) as if could not decide which brightness setting to use. I fumbled for a few seconds trying to get into the brightness settings, but felt the temperature rising quickly. As far as I can remember, at no point did the display blank out.
Knowing the damage this could do to the battery (and other components) I immediately powered off the Fuze and let it cool down. Later on I connected it to my laptop to charge the depleted battery and to restore a good config.
The point of high heat seemed to be in the center-left (looking at the front) of the player. I can't be dogmatic about that as I was scrambling to get the thing powered off.
Since charging and going back to a less-than-full brightness setting, I've not noticed any fallout. My intuition tells me that this high-drain and subsequent heat from the battery is related to the full backlight brightness setting.
Based on the talk here, I've set the wheel light to OFF.
I haven't had any issues since this, but I'm hesitant to use a high brightness setting.
PockyMaster:
Well, I can also testify towards this overheat problem.
I was actually curious one day and decided to ramp up my brightness and wheel light after reading this thread. The heat definitely started building up in the bottom left corner roughly 30 seconds in. I used my lips to check for any temperature differences because they were the most sensitive to temperature changes, and I kept my warm hands away from the back of the device and just used my fingers to scroll, so the lights would stay on, while the player sat on my bed. From there, I backed out as quickly as possible and returned it to regular settings. The screen didn't flicker as I tried this. It only does so while i'm an hour into rockboy, and, that's where crazy things happen.
It not only flickers, but blanks out and sometimes mirrors the visual output from the lcd (Like, b's look like d's). That's when I start freaking out and start wondering if my device is covered by demonic possession in the warranty and frantically restart it in both the OF and rockbox with the same residual effects for roughly 5 minutes.
I guess it's safe to say that I should not be playing games on rockbox for more than an hour just yet.
I know this may sound like a joke with the whole lip temperature check and crazy screen flipping, but I'm dead serious.
Normal Setting for brightness for music, listing, games etc: 3
Scrollwheel light: off
Volume Setting: 6dB (no headphones connected)
FunFact: That's how i found out the fuze's back was made of a coated metal material.
FunFact2: I'm in school for materials engineering.
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