Walker screen flashes red green blue - Sylvania LD320SSX LCD TV

Sorry not familiar with this brand

2407WFP, PSM, flashes red, green, blue, black, white, repeat

https://www.dell.com > community > Monitors > td-p

2407WFP, PSM, flashes red, green, blue, black, white, repeat. Hello,. My 2407WFP won't go into power save mode, even when the computer is turned off.

make model (what it is)
in all questions please. More info on the MYSTERY object

https://www.google.com/search?q=Why+is+it+flashing+red-blue-green

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LCD panel fault. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

Display panel fault.

Videocard, obviously

Sounds like the main board causing that type of symptom. You can get replacement main boards from www.tvrepairworld.com

T'Con board fault.

Try looking into the blue CRT lens while its on and see if the coolant has congealed. You will be able to tell if it has bacteria growing as this can cause the blue to be unresposive and make your screen have a blue haze. The coolant will need changing if this is congealed with bacteria. This is a common problem in all projection tvs blue and green are more prone to this sympton red is not.

Convergence amp ic bad or loose connection on ic's

http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/

Intermittently displays bright red/green/blue raster then shuts down with led flashing 2, 4 or 5 times
Amazingly this was due to the CRT being faulty !

Blank raster
Replace defective TDA6111Q for Red, Blue and green

Red or Green or Blue screen
Check and replace on crt module : D702, D703, D704 (all 1N4148) replace with type 1N4948T

Dead, led flashing red/green at first, then going to red standby
Replace C604 (1000uF, 16v) elec. cap. It is in the decoupling circuit for the 5 volt supply