T8 LED Tube Driver 'Repair'
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- เผยแพร่เมื่อ 3 มี.ค. 2018
- I acquired some T8 LED replacement tubes. Allegedly would work with an electronic ballast. They did not. I tried to repair this with the same parts when I think I really wanted an excuse to do what I did. These are not expensive to replace but I like to keep stuff out of the trash if I can do so by recycling something else. Thanks for watching.
I’m just replacing the board for $7 but I appreciate your replacements of individual components. Enjoyed the hack to get the full wave bridge installed versus discreet diodes. Cool !
Oh yeah, a replacement board is super cheap. Most of the time this isn't worth repairing but I had the bits around and figured it would be interesting. I'm glad you enjoyed it. Thanks so much for watching!
That soldering iron looks to work a treat. May I ask the power rating?
Thank you for the video. I got few burned LED tube and am thinking of doing the repair too on the driver. My 2nd option would be to buy a separate power supply to directly drive the whole LED tube and getting rid of original driver. What do you think? feasible?
First i'll have to determine the output voltage from the driver and max current the tube draws and get a bigger power supply that is able to drive a few LED tube. Mine is Chinese LED tube and they tend to burn out in short time and i think getting rid of the driver is the way to go. Appreciate your feedback.
There are benefits to both options (new driver vs stand alone supply). New driver is likely the easiest option. No need to run wires to a central power supply. They are pretty cheap too. You might be able to fix the old ones depending on the failure. If the chip is still good, the rest is pretty basic. I used parts pulled from old CFLs and other random junk. Dedicated supply is good too since you can use one for all the tubes. My only reservation there is you may have tubes of varying voltage requirements. If they are all 100Vdc, then you need to worry about having 100V DC wires hanging about. If it were me, Id go the driver replace/repair route first and dedicated supply second. You can get new drivers for around a dollar on eBay. Maybe replace the filter caps in them with 105c rated caps and they may last longer. Of course if you have tubes that run on 12V or less, then I would go with a dedicated power supply since 12V is easy and safe for the most part.
Cool repair. I have a couple of these blown tubes and was wondering if the actual LED's were still useable? Is there any way I can bypass the circuit board and use another power supply? I want to use a 12v supply that I already have laying around. What would I need to do?
Hi D.H. In theory yet you can. What I cant say is if they will run on a 12v adapter or not. Most of these seem to be 100Vdc strips needing a 100V power supply(the little board). Some do use 12V though. You may be able to Google the old boards part # to see what their output is. Or see how the LEDs are wired in the strip. If they are wired 3-4 in series and then groups of 3-4 in parallel, it might work. If its all in series then you need to find out what the old drivers output was and match that or replace the driver.
FixitFrank Thanks for your reply. Ok, I got some home-work to do then. I didn't do any checks yet, I assumed the driver breaks down the 100v to 'maybe' 12v or something, to power the leds. I disconnected the driver and connected my 12v supply to the copper strip directly. Pos to pos, neg to neg, but the lights didn't come on. Again, thank you. Will be checking out your other vids.
Yup could not drive the led with 3 to 4v d.c voltage only,you have to ensure the constant current to flow into it depending upon the power ratings of it. You could drive a 100v/60mA led strip in a tube light through a 12v/500mA dc supply by separating each 4 leds in strips and connecting it in parallel.
I have a new LED replacement for fluorescent and it has a 3 way switch for different color (cool white, warm, or in between.
So I switched the switch with the power on (not supposed to do that) and now it won't work. Any ideas?
Hi! Hard to say without seeing it, but I bet it has a fuse or at least a resistor acting as a fuse. If you can open it, I would check that and put another in.
Pro trick: watch movies on flixzone. Me and my gf have been using it for watching loads of movies during the lockdown.
@Koda Harlan Yea, been watching on flixzone for since december myself :)
How much led driver rate? Plz
Im not sure what you are asking
what's the rating for 1 led
depends on the LED, The datasheet will have that info.
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This is not the correct procedure, you have to measure the current and voltage before substituting the bridge rectifier.
In many cases I agree you need to measure the voltage and current.
Not for an $2.00 led driver.
I already know the voltage and current and use parts of equal or larger value. Spending more time than is necessary makes the repair less efficient. These lights are still running today after this repair. 3x longer than before they failed and counting.