sphere76

Hi!

This might be too stupid question but...

I just bought an used 8" TFT (SGDQ TM-868).
It didn´t have AC/DC adapter so i bought a 12V, 1000mA adapter with + in center.

My problem is that when I turn it on, the screen stays black. I´ve tied almost everything but still..nothing. The power light is red. Shouldn´t it be green anyway?


Thanks
Jari, Finland

MP3Car.com

 

Morpheus2010

mine just went out i have a shark 8" screen i bought from gooddeals18 it was working fine and it just went black. The wierd part is that the touchscreen still works when i touch any part of the screen my computer still responds. ie play, pause, next etc etc

bbalazs

That power seems to be quite low.
This type of monitor needs around 10W at normal working. Directly after switching on, the current runs above 2A for a short time (because charging capacitors), and perhaps your adapter is not strong enough to provide this, therefore voltage falls.

Run it from the PC power supply at home or
buy a cheap 12V 3A stabiliser IC (eg. 78T12) instead and drain the car battery (with engine on, of course).

bbalazs

Perhaps just the backlight is off. Try to enlight it by a strong source of light. Do you see any sign of picture? Use a picture with high contrast.

Morpheus2010

All I see is when i turn it on is a flash and the screen stays black. i've even plugged it up to a ac adapter. The screen was working for a while before this happened. only the touchscreen works now. thanks for the help

MP3Car.com