Sammy wrote:
I bought a 240V, 26W fluorescent lamp marketed by Omicron
(type OMC 9126). This bayonet mounted lamp lit for a few
seconds and then went dead.
I cannot find a circuit for it on the net. It has 2
semiconductors with E13003 on both. What is this
semiconductor? They measure short circuit
across 2 of the pins. Surely they must be faulty. A
schematic diagram would help. ==Sammy==




They may be fine, often chokes will show a short circuit measured in DC
resistance but are not so at the normal operating frequency. The
components are likely house marked so no information will be available,
most use NPN power transistors though.

If it isn't as simple as cracked solder joints, just return it to the
store, or if you've left signs of opening it up, chuck it in the bin and
buy a new one.