Questions about building CCFL Tester

[Radio Fox]

Re: Questions about building CCFL Tester

Put new batteries in ............. same result. Only 125V AC on output and no lamp coming on. Oh well, i think the inverter is fried or something.

Have you tried measuring the output on "out 2" as well?
What is the maximum range on your multimeter?
Just a thought, but have you set it to measure AC, rather than DC?

[Welchs101]

Re: Questions about building CCFL Tester

I dont know what the max value i can measure is ...........but i know its more than 125V as i just measured 240V AC on my water heater.

Yes, i measured 125V AC. That was the first thing i checked. But to be sure i can check again.

[Welchs101]

Re: Questions about building CCFL Tester

Let me just say KRANKSHAFT was right. That little "inverter" is VERY VERY VERY VERY VERY DANGEROUS! I almost started a FIRE! No joke! I took all safety precautions and still almost started a fire. So i abandoned the little inverter idea and went with another approach.

I took an existing (working) LCD monitor. I soldered onto the inverter board two wires. The wires were soldered onto the "connector" where the CCFL lamp plugs in. I used these two wires to test the lamps. Sure enough the lamp which was "bad".........came on for a sec then went off. Where as a good lamp stayed on.

The "bad" lamp when tested with the little inverter almost started a FIRE. I plan on re-reading KRANKSHAFTS comments and only using an inverter setup like he suggested.

I have learned on alot on this little exercise. thanks to all the people who provided support! Thanks.

[PlainBill]

Re: Questions about building CCFL Tester

Let me just say KRANKSHAFT was right. That little "inverter" is VERY VERY VERY VERY VERY DANGEROUS! I almost started a FIRE! No joke! I took all safety precautions and still almost started a fire. So i abandoned the little inverter idea and went with another approach.

I took an existing (working) LCD monitor. I soldered onto the inverter board two wires. The wires were soldered onto the "connector" where the CCFL lamp plugs in. I used these two wires to test the lamps. Sure enough the lamp which was "bad".........came on for a sec then went off. Where as a good lamp stayed on.

The "bad" lamp when tested with the little inverter almost started a FIRE. I plan on re-reading KRANKSHAFTS comments and only using an inverter setup like he suggested.

I have learned on alot on this little exercise. thanks to all the people who provided support! Thanks.

Well, as long as you're happy, that's good. I would have enjoyed pictures of a fire, though. It's only supposed to get up to 63°F today!!!

PlainBill