HOW TO REPAIR CFL BULB

CFL BULB  does not glow

Check TP1 AND TP2 ac 230 v comes to bridge rectifier or not.

When comes  230 v ac  then check TP3 AND TP4 300 v dc in filter capacitor C4 3.3 uF /400v .

If not coming then check bridge rectifier  and C4 .

When  comes 300v dc  , then check  TP 5  here around 125-150v dc is coming.

If not coming then check  Q1,Q2-  MJE 13001, R1,R3 – 1 Ohems, R2,R5 – 20 Ohems and its related component.

After 125v DC coming in TP5 if CFL BULB not glow then check CFL TUBE two side coil, and chopper tranfermer.

After this tube already glow , if does not glow then see this tube starting point only glow in low light but not complete not glow then, check  C3 2n2/630 v is shorty.

Replace this C3 and you done.

.....................................................ENJOY.........................................

If any question about this you can comment me, and i will reply you.....................


ANOTHER CFL BULB CIRCUIT DIAGRAM WITH DETAILS

BIGLUZ 20 WATT       BROWNIEX 20 WATT       EUROLITE 23 WATT      IKEA 7 WATT 

IMMEDIATELY 25 WATT      ISOTRONIC 25 WATT     LUXAR 11 WATT    LUXTEK 8 WATT  

 MAYWAY 11 WATT       MAXILUX 15 WATT      OSRAM 11 WATT     OSRAM 21 WATT   

OSRAM DULUX STAR 11 WATT      PHILIPS 11 WATT      PHILIPS GENIE 11 WATT  

 PHILIPS 14 WATT     POLARIS 11 WATT