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Wednesday, 2 April 2014

HOW TO REPAIR ELECTRONICS CHOKE

ELECTRONICS CHOKE 40 WATT
 REPAIRING / 
TROUBLE SHOOTING/ 
FAULT FINDING/
CIRCUIT DIAGRAM




Fault finding of electronics ballast 40 watt

FAULT NO 1 ----R1 2.2 Ohems BURN IN FEW SECOND
SOLUTION - MAY BE SHORT THESE PART - c8- 104 pf 630v ,  D1-D4 = 1N 4007 , C1 -                      10MF- 400V,  T1-T2 = (MJE 13007 / MJE 1300F/ 123T/ 123D/ MJE 13003)
FAULT NO 2 --- TUBE LIGHT ONLY END POINT GLOW REDISH OR LITTLE WHITE COLOUR
SOLUTION----- CHECK THE STARTING CAPACITOR .01MFD/630 V POLYESTER CAP. THIS IS MAY BE SHORT. OR MAIN CHOCK COIL REWIND, OR C4,C5 - 1MF/63V MAY BE DEFECT.
FAULT NO 3 --- TUBE DOESN'T GLOW.
SOLUTION ----- MAJORITY FAULT IN CHOCK .R1 - 2.2 Ohems 1/2Watt, C8 - 104PF/630V,  D1-D4 = 1N 4007,  T1-T2 = MJE 13005 ( OR SUBSTITUTE ), R3,R6 = 2.2 Ohems .


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