No Image on Lilliput in sub zero means...

Rockhammer · 08-01-2001, 12:40 PM

That would certainly explain it. I had no idea these things had temperature sensors. Was your thermistor a SMD type? I'm not sure I'm up to trying to desolder one of those.

Rockhammer · 08-01-2001, 12:50 PM

That would certainly explain it. I had no idea these things had temperature sensors. Was your thermistor a SMD type? I'm not sure I'm up to trying to desolder one of those.

nobb · 08-01-2001, 12:55 PM

Whats a SMD type? It was really really small and my soldering iron is really blunt. I am guessing your thermistor might be very small as well, because those would be cheaper. I had to put a drop of solder over the whole thermistor and then use tweezers to quickly scrape it off. I let the thermistor cool down to room temperature then measured the resistance to know what resistor to replace it with.

Rockhammer · 08-01-2001, 02:45 PM

Sorry for the double post, btw. SMD is 'surface mount device". That sounds like what you have. They are all of the tiny components that set right on the surface of the circuit board rather than have leads that penetrate to the other side.

If it is an NTC thermistor (resistance decreases with increasing temps) it might be possible to shade the top of the thermistor with a pencil or conductive ink pen to achieve the same effect. Thanks for the info.

Lithoss · 12-07-2007, 07:15 AM

Hey guys
ive been reading a lot on lilliputs in freezing or cold temps, and it looks like most everyone's screen will at least turn on in the cold, maybe washed out etc.

When i leave my car outside in below freezing temperatures and it gets cold soaked (ie, 5+ hours), my lilliput won't even turn on for about 5 minutes, it just stays completely black. after about 5 minutes of warming up the car, i flick the computer back on and its fine.

Does this mean i have a faulty backlight? has anyone else had this problem?

Lithoss · 12-07-2007, 08:56 PM

nobody?

Rockhammer · 01-08-2008, 04:03 PM

I don't have a Lilliput, but my no-name eBay 7-inch VGA monitor exhibits this same behavior. Only solution I've found is to just wait it out. It only seems to happen on mornings when it has set overnight in below freezing temps.

Bugbyte · 01-08-2008, 07:18 PM

It means it is cold. That's all. LCD means LIQUID crystal display. The colder it is, the dimmer and less likely it is to display. I haven't seen any reports that this damages the LCD, just that it takes awhile to warm up.

nobb · 01-08-2008, 07:27 PM

Perhaps your Lilliput is like my k301 and has a sensor which electronically prevents it from turning on below a certain temperature. On my k301, I replaced the sensor (a thermistor) with a 10k resistor and forced the screen to operate in the cold. Cant be 100% sure that is a good idea, because operating the CCFL backlight at below freezing temperatures will significantly reduce its life.