Sanyo model #DP42647 no video
 

This is my first flat panel LCD to work on, and need a little help. I
am not a pro, but have been working on tube TV's for a few years now.
This set has no video or on screen display. Audio is fine. The screen
also pulses at power up for a few seconds then stops, only to leave a
blank dark blue screen. I have googled and only found it could be the
sustain and driver boards at fault, and replacement is the fix. I
suspect component replacement would do the job, just not sure where to
start, especially with no schematic. Anyone here worked on this
particular set or can get me started in the right direction? The lack
of on screen display suggests? Any help will be greatly appreciated.
Thanks as always group.

Sanyo model #DP42647 no video
 

Sanyo model #DP42647 no video
 

Sanyo model #DP42647 no video
 

On Thu, 29 Oct 2009 14:14:45 -0700 (PDT), wrote:

This is my first flat panel LCD to work on, and need a little help. I
am not a pro, but have been working on tube TV's for a few years now.
This set has no video or on screen display. Audio is fine. The screen
also pulses at power up for a few seconds then stops, only to leave a
blank dark blue screen. I have googled and only found it could be the
sustain and driver boards at fault, and replacement is the fix. I
suspect component replacement would do the job, just not sure where to
start, especially with no schematic. Anyone here worked on this
particular set or can get me started in the right direction? The lack
of on screen display suggests? Any help will be greatly appreciated.
Thanks as always group.
This is most likely a problem with the LCD panel itself; possibly in
the bias supplies on the panel electronics. It is also possible the
problem is in the TV control board, and for some reason it is not
sending video information to the display.

PlainBill