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Discuss Testing compact electronic ballasts in the UK Electrical Forum area at ElectriciansForums.net

am I being dumb here? power up both the new and old ballasts,
try a new tube in each in turn. note result
try a suspect tube in each. note result.
there are no serviceable parts inside the ballast so you are really only trying to find out if they work?
 
am I being dumb here? power up both the new and old ballasts,
try a new tube in each in turn. note result
try a suspect tube in each. note result.
there are no serviceable parts inside the ballast so you are really only trying to find out if they work?

These are 4pin compact fluorescent lamps, 2x32w off of one Electronic Ballast.

I have done all the obvious on site but was wondering if they can be bench tested and outputs measured.

It would appear that is a little hopeful without some serious test kit and a mocked up lamp holder.

My multimeter and volt stick just wont cut the mustard here I fear.
 
By definition, if the old ballast won't drive new good tubes, it's faulty. That much you will already know before it reaches the bench. What you really want to find out is why they failed, which can normally only be done by internal examination and possibly detective work. External tests probably won't reveal anything.
 
By definition, if the old ballast won't drive new good tubes, it's faulty. That much you will already know before it reaches the bench. What you really want to find out is why they failed, which can normally only be done by internal examination and possibly detective work. External tests probably won't reveal anything.

Cheers Lucien, you're correct. I'd like to say they have failed because of 'X' but that appears beyond my capabilities.

It's just odd that of the nine lights out the three I got to all had failed ballasts, there are another six to do which could all be lamps but it just seems weird.

I'm getting "the last company just changed the lamps"..."Why are they all broken now?"

My only response so far is possibly age or duff lamps used previously.

Just worried I'm missing something simple.
 

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