Comments on: Electronic Ballast Repair

By: Md. Shahadat

Md. Shahadat — Sat, 23 Nov 2019 06:52:25 +0000

Dear Sir, this is Shahadat from Bangladesh.
first of all thanks to you. its really great job.
i am verey much interested to learn to repair HMI. please send some article or book to learn repairing HMI

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By: Bufford Moore MD

Bufford Moore MD — Wed, 06 Feb 2019 13:05:32 +0000

I live in the US and had a failure of a florescent light. I remembered seeing this article and was interested in seeing if it had the same fault. Upon opening it, I found the components to be potted in some sort of resin that I was not able to remove without damaging the components. As all the fixtures in that room were of about the same age and several lights were flickering, I opted to replace them all. There were, to my surprise, more than one brand of ballast. They were, however, all similarly potted when opened. Is that common, or just something required here?

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By: Justice cele

Justice cele — Tue, 27 Jun 2017 07:34:02 +0000

Good work keep doing it.

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By: Justice cele

Justice cele — Tue, 27 Jun 2017 07:30:06 +0000

In reply to Henrique Jorge Guimarães Ulbrich.

Remember meter testing could give correct reading and yet the component fails to work, remember its a semiconductor. its best to put in circuit and see the behavior.

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By: gabriel jerez

gabriel jerez — Fri, 23 Jun 2017 23:56:15 +0000

Good evening, please, can you send me the electric diagram of the saving bulbs and the ballasts. Thank you.

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By: Mark Tembo

Mark Tembo — Thu, 22 Jun 2017 13:58:46 +0000

I have a similar problem, and I think after reading this, I should be able to repair my fluorescent tube as well.
Thanks a lot!

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By: Robert Calk

Robert Calk — Wed, 14 Jun 2017 18:47:22 +0000

In reply to Albert.

If I remember correctly, the one I repaired had a bad diac and two bad poly caps. It also had a loose ground and some suspect solder joints.

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By: Humberto

Humberto — Wed, 14 Jun 2017 18:43:16 +0000

Great article with good quality pics. As you said, electronic-ballasts can be rapaired most of the times.

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By: Robert Calk

Robert Calk — Wed, 14 Jun 2017 18:34:04 +0000

Good job, Mohamed.

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By: Albert

Albert — Wed, 14 Jun 2017 13:39:58 +0000

I've seen a lot of these electronic ballast boards from the inside that were used on a turkey farmhouse. But instead of semiconductors, the only component that was defect almost every time was a 10uF 450V e-cap. And in almost all case the e-cap plus side leg connection was chemical damaged and broken of.
After I read that the life in hours of these e-caps is very limited (200 hours
or less?) I advised the owner to go over to start using LED lights instead.
Thanks for the article with different ballast boards. My repaired ballast boards only used smd parts for all the semiconductors on it.

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