Does anyone else get a short hiss (less than a second) from the ballast when they turn on the light?
1574616
Not from within the ballast itself, but I have heard that sound come from brief arcing at other locations. Ballasts deliver a brief (~ 1 second) pulse of high voltage (~900 VAC or so) to initiate conduction in the tubes. That voltage is high enough to arc-over wherever insulation in the fixture may be compromised due to humidity, age, contamination, etc. The sound might also be due to arcing in the light's switch (in the wall) if the contacts are worn or displaced. Or it could be the sound of arcing at the terminals (pins) of the tubes themselves if they are not fully seated in their sockets. It may be due to a bad or missing ground at the fixture - rapid-start electronic ballasts like this one need a good ground to operate properly. You might want to have a qualified electrician check this out for you to ensure everything is safe. Good luck!
1320527
Daniel: please read the review I wrote on December 6 2011 "Excellent electronic ballast for one F40/F34 T12". It describes the slight difference in wiring that I encountered on that installation and the wiring conventions I followed. Perhaps it will help.
1699721
Check to see if you turned the nob down to 750 or 500 on the side there dimmable ballasts
823520
All of these mini florescent bulbs have small ballasts in the base that control the lighting. They can and often do make a buzzing noise. I have 20 of the 45W lamps and only a few buzz slightly after warming up. I usually have music on when I use them, so it's not noticable for me. If the buzzing is really loud to you, then you might have received a defective batch, in which case I would contact the manufacturer.
1795514
No. It's not the bulbs. It's the base. For some reason it shorts out. I've found it happens if you generate static shock while touching the lamp.my initial 2 went out with in weeks. (I bought 2) just had a replacement go out last week. So will be calling for a replacement again.
855884
play around with the ballast connections. when i setup mine, ballast connectors caused the same issue.
1596300
Your source is doing that. Try plugging it in a different device. Hiss gone, guaranteed. (Late answer, but might help future inquirers).
422941
I can hear a slight sound on mine, along with the light going off. It seems to take several seconds to reactivate if there is constant movement.
2145226
Swap the ballast to the other side. If the problem follows the ballast. Then the ballast is bad. Be sure ALL the connections are good including the battery connection.
834338
I haven't heard any sounds from my light so far.I think its a pretty good design Possibly the switch is intermittent.Try turning another light setting and then switch back.
1632808
This is a photograph of the light bulb. It worked in my fan. The ballast is a different issue. Sam L.
166081
you may want to check if the hissing comes from the device base or the power adaptor, make sure the device is off.
2019217
I found it was just cheaper and less trouble to replace the ballast. I also discovered that the ballast life depends upon whether the lights are off when the starter is actuated. If the lights are on when my starter is actuated, it causes a low voltage/high current situation in the ballast nearest the battery. I had two units from different manufacturers fail like that before I figured out what was going on.
1771920
At first I thought this was kind of a funny question...but then I went and picked up my backlight, and sure enough, when I tilted it back and forth it does sound like there is something very small inside that is moving! My BF says that it is the ballast and that it is perfectly normal.
1011615
in theory it should fix the problem of the tv turning off & on. We replaced the bulb, it worked for a few hours or days (can't remember). then we googled for more help & saw something say that a lot of times you have to replace the ballast as well as the lamp. did that & it still doesn't work. We just decided to buy a new tv & be done with it instead of having someone look at it & pay that charge as well. I am sure this doesn't really help, but that's what our experience was.
389189
I have not noticed that happen. Im using a 400w hydrofarm all in one ballast and reflector with no issues. Sounds like a possible ballast issue. Good luck
15409
I have the same problem with the florescent bulb in the magnifying lamp I purchased from HD. The very first time I tunred it on it blew. Not sure if it's the ballast or the bub but a replacement t5 6400 K 210V 22W is impossible to locate. That's why I'm here shopping for a LED magnifying lamp, lol.