R522,R524,RESISTAN VALUE ON THEINVERTERBOARD.

If you have a multi meter check the box caps and resistors for KM 2XX series then replace it whenever required. Some may differ in values like 0.15uF 275x2, 0.33uF 275X2 or 0.47uF 275X2 then resistors may also differ with different models but common to have 1.1k ohms 2watts. Also if caps are open it is good to check the 600V triac and replace it when giving out lower output. I also advise to clean the commutator esp when is is sparking a lot, you may use light sanding and clean it after. Check also if the tachometer is good, there is a resistor-like-coil hidden under a plastic tab with 2 wires. This gives feedback and via a magnet attached to the shaft. Check the motor brush if it is good or worn out. Lastly check all the switches because if one of them is not working properly you wont be able to let the motor run.

This site doesn't have that kind of reference material.

If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Circuit diagrams of many popular brand TVs and other devices are given.

Hi Juan,
the resistor values you want are:
R522
RES METALIZED FILM T 1/4W F 3.92k?
R524
CARBON RES. 1/4W J 10k?

The complete Service Manual is available as a .pdf Here:
Sylvania LC420SS8 LCD TV Service Manual
Its free to view, but you'll have to agree to a free 14 day trial membership to download it. Hope this helps you,

Try to read the color code of your resistor, if the resistor was burnt you have to do is send your TV to tech.

ck resistor 3318 100 ohm on pwr supply

but you did not give the model number nor did you give the chassis number

start with products to specs or contact support.

http://www.primaamerica.com/support.asp

if it is "C514" it is capacitor. maybe the green section from the crt board is dead, try to test the transistor from its circuit or resolder it.