2x Fluorescent Bulb Circuit

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Anonymous
2x Fluorescent Bulb Circuit 2016-02-24 18:45:03 Post No. 951663
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2x Fluorescent Bulb Circuit Anonymous 2016-02-24 18:45:03 Post No. 951663 [Report]

New to electronics. Anybody have any idea why I can't fix this fish tank lid? It has two fluorescent bulbs.

I've replaced;
- The bulbs themselves
- The lamp starter switches.
- The ballast.

.. and it still won't work.

If I touch the lamps to power, then they flicker so I know there's power. As soon as I put them in the fittings properly they switch off. Which part is going wrong here?

Sorry for bad quality photo/diagram.

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Anonymous 2016-02-24 19:38:19 Post No.951687
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Anonymous 2016-02-24 19:38:19 Post No.951687 [Report]

>>951663
Being in a fish tank lid I'd suspect corroded sockets.

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Anonymous 2016-02-24 20:38:22 Post No.951715
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Anonymous 2016-02-24 20:38:22 Post No.951715 [Report]

>>951687
Nope. Sockets are fine. I've used a voltmeter on the last starter switch in the circuit & get a reading, so presumably (unless I'm wrong) that means that at least the first bulb should be lit up?

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Anonymous 2016-02-25 07:56:23 Post No.952033
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Anonymous 2016-02-25 07:56:23 Post No.952033 [Report]

>>951663
I've only changed out 3 ballasts before and I could have sworn that the lamps were parralel with ballast? Not sure if that would matter

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Anonymous 2016-02-25 12:29:57 Post No.952079
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Anonymous 2016-02-25 12:29:57 Post No.952079 [Report]

if touching it helps there is a good chance there is nothing grounded near the bulbs

for some reason flourescent lights dont strike well unless there is something grounded near them. your finger is a crappy ground but it helps. Try running a grounded conductor near it and see if they fire, if they do install one.