COLOUR TV BLANK, GREEN, WHITE, NO PICTURE REPAIR

COLOR TV BLANK, GREEN, WHITE, NO PICTURE REPAIR


COLOR TV PICTURE WAS WORKING , BUT GREEEN SHADED ON THE SCREEN.
HOW TO FIX THAT PROBLEM.     EX(PROBLEM WAS BELOW THE PICTURE)


WARNING
TV IS HIGH VOLTAGE IN THERE...

OPEN THE TV CASE INSIDE MOTHERBOARD CHECK BOARD BURNED , SHORTED COMPONENTS USING YOUR MULTIMETER. FIRST CLEAN YOUR MOTHERBOARD

1.GREEN PICTURE WAS DEGAUSSING COIL PROBLEM ITS BURNED OR NOT
2. CHECK PTC SHORTED OR NOT
3.RGB OR NECK BOARAD TRANSISTOR SHORTED OR SOLDER CONNECTION PROBLEM

THIS PROBLEM EASILY SOLVE

1.CHANGE PTC
NECK TRANSISTOR RESOLDER ,,PROBLEM WAS NOT SOLVED REPLACED RGB TRANSISTOR

2.CHECK SYSTEM IC RGB VOLTAGE  RGB VOLTAGE IS 1 V TO 2.5 V








BELOW THIS PICTURE PROBLEM WAS ONLY SIGNAL PROCESSOR PROBLEM
(CROMA IC)

POWER SUPPLY IS CORRECTLY  WORKING

CHECK 5V , 8V ALL INCLUDING HEATER RESISTOR AND HEATER VOLT 2.5 TO 3.5V

HOW TO CHECK HEATER VOLT SET THE MULTI METER IN AC 200 V  ,RED PROBE HEATER OUT ANOTHER PROBE TO GND .ITS SHOWING VOLTAGE


FIX THE PROBLEM
 CROMA IC VOLTAGE OK. RGB VOLTAGE WAS NOT OK
 CHANGE IC SYSTEM PROCESSOR (MAIN IC)
THAT PROBLEM WAS FIXED




SECOND PICTURE IS GREEN  SAME ABOUT OF WHITE PICTURE REPAIRING