View previous topic :: View next topic |
Author |
Message |
torbjorn
Joined: 07 Jun 2007 Posts: 370 Location: Sweden
|
Posted: Mon Oct 19, 2009 3:07 pm Post subject: 7" TFT monitors, white screen |
|
|
Now I have to repair a dozen of 7" TFT monitors (like automotive rear seat entertainment or truck rear view monitors), probably a chinese OEM brand, mainly manufactured in 2007-2008. So far, it seems impossible to get any technical documentation for them.
The TFT panel is a Hitachi part, TX18D11VM1CAA, and the driver circuitry is built up around a Pixelworks PW113 image processor and an AD9883A ADC.
The by far most common fault (about 70 %) is that they give a completely white screen, neither internal menus nor an input video signal can be displayed. So far, i have checked that all internal voltages (+5V, +3,3V, +1,8V etc) and checked that the clock oscillators are running at reasonable correct frequencies.
Any clues? |
|
Back to top |
|
|
|
|
|
You can post new topics in this forum You can reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
eServiceInfo on FB -
Service Manuals Free Download -
Service Diagrams
Free TV Schematics Download -
HARDW.net -
Pinout Master -
Jabse Service Manual Search -
Jabse.InK -
onTap.bg
SnimkiOt.com -
Poblizo.com : пътешествия
Latest Service Manuals :
tp3069re Motorola • TVP0424 Sony • 21HT16C SHARP • 2sc4081ub Rohm • panasonic nv-810 panasonic • philips lbd8127 14 lbd8107 lbd8128 lbd81 • 09 PCB Diagram Samsung • s es1065 MB • CAB-HD15-TVF MATROX • [radial thru-hole] PXA Series Samyoung •
|