SAMSUNG 21 INCH CRT TV SECONDARY SIDE VOLTAGE HIGH

Samsung 21 inch crt tv secondary side voltage show 165 v instead of 115v 

  1. if you facing this kind of problem fallowing this step 
  2. first plug in then i check 230v ac is proper or not . it show ok 
  3. then i check 300v dc on primary side main capacitor .it show ok 
  4. then i check secondary side main capacitor that is 115v but it show 165v 
  5. then plug out after that i place 100w bulb on the 115v line main capacitor 
  6. then after plug in i see the one time bulb is glow and go off 
  7. then check voltage on bulb it show 0v 
  8. then my next step to check all resistance and transistor are place in feedback line 
  9. then we start checking i wiil  see one 100k ohm resistance is open  
  10. then i place new 100k ohm resistance then secondary side voltage is come 115v and bulb is glow continuously
  11. here is problem in feedback line 100k ohm resistance  

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