Sony KV27S42 no color
 

This TV went black&white suddenly. The color genration must be OK
because the menus all appear in fine color.
It is B&W both in tuner and monitor mode.
Would appreciate any help.
John Rakos
johnATrakos.com

Sony KV27S42 no color
 

On 18 May, 18:03, wrote:
This TV went black&white suddenly. The color genration must be OK
because the menus all appear in fine color.
It is B&W both in tuner and monitor mode.
Would appreciate any help.
John Rakos
johnATrakos.com

I dont know this set in detain, but the colour for the graphics is
usually generated in the micro and has a different path. It is RGB.
You really need a manual to trace the signal and an understanding of
the video / chroma path. The video decoder IC or assiciated components
may be the right place. It may also be a micro fault. I don;t know if
this set has the vertical micro PCB (think it has the tuner on it) but
they give a lot of trouble. If your really stuck, I will see if I can
find a manual at work.

Cheers

Rod

Sony KV27S42 no color
 

This can be a fault with the colour demodulator section. You will need a
solid background in TV servicing, the service manual, and a scope to
troubleshoot it.

I would suggest taking the set to a reliable service centre, or a Sony
authorized service rep to have an estimate for the repair. I doubt you
will fix this yourself.

The reason for the display showing the fonts in green, is that the font
generator in the uPC drives the green video channel only. The colour
demodulation for the TV signals is done much farther back in the system.

--

Jerry G.


wrote in message
ups.com...
This TV went black&white suddenly. The color genration must be OK
because the menus all appear in fine color.
It is B&W both in tuner and monitor mode.
Would appreciate any help.
John Rakos
johnATrakos.com