How to Repair energy saving Lamps

Repairing energy saving Lamps

With over use of energy saving light bulbs,we are left with thousands of non functioning bulbs around us.Let's how to fix a non functioning Energy

There is a capacitor connected to the filament, in many cases the capacitor was short CCT this was the only fault. Replace the capacitor removed fault Voila, CFL is back to life.
CFLs with blown fuse, It was mainly caused by a fault in DC bridge cct., I simply replaced all the rectifying diodes (I have tons of them in my lab) and voila, rebirth of another CFL.
Another common fault in the CFLs was Short 400V capacitor that I assume had caused damaged to the transistors and resistors connected to them. There was no sign of resistor color codes as they were to dark ( I assume caused by overheat) but I had plenty of similar CFLs in hand and I checked the one with good resistors, Their value of the first resistor was around 2 ohms and the other around 20 ohms. I also had to change the transistors as well. Another CFL brought back to life.
Diac and its 500Kohm resistor at fault .In a few cases, I found the 500Kohm resistor to be open cct. ,And in some cases changing the diac itself resolved the fault.