Buck Parrish
Senior Member
- Location
- NC & IN
These things are weird, They're Chinese made LED High Bay lights. I hooked them up, some work, some do not. Some blink. Has any one else had a similar problem?
LED High bay lights blinking
- Thread starter Buck Parrish
- Start date
- Status
ptonsparky
Tom
- Occupation
- EC - retired
Aren’t they all Chinese made?
Buck Parrish
Senior Member
- Location
- NC & IN
PHP:
Probably, I don't know if that matters. It's just that some one referenced, China Made, in some they had problems with.
goldstar
Senior Member
- Location
- New Jersey
- Occupation
- Electrical Contractor
Key word is Chinese. I don’t mean anything ethnic when I say that but they (and when I say they I mean generally speaking) mass produce products, have relatively poor quality control and will (in many cases) dump products into our markets that they know are defective.
Case in point, ever go into HD and buy those pack of 4 cheap flash lights for $5 ? They last a week until the push button switches fall apart. The fact that you’re buying more expensive light fixtures doesn’t put you in any better category. If you get a container shipment of these light fixtures and half of them are bad your only recourse is to file a complaint with the Chinese consulate to try and get a refund. On China’s end, the company that made them gets paid via letter of credit when the ship leaves port.
Good luck.
broadgage
Senior Member
- Location
- London, England
How rapid is the blinking ?
If slow, with a minute or more between on and off, then that to me suggests over temperature shutdown caused by either high ambient temperatures, poor design (heat sink too small) or poor assembly (light source improperly bonded to heat sink)
If rapid flashing, that can suggest low input voltage such that the internal reservoir capacitor is discharged faster than it can charge. Remember that the stated input voltage range may be in Chinese volts.
For example, a cheap fixture may have been originally designed for 220 volts, and then someone in the factory tried a few and found that they also worked on 120 volts. So after that they labelled future production as being "120/240 volt" without checking if they worked on 108 volts (120 less 10%) or that future batches with slightly different component tolerances also worked at 120 volts.
Do of course double check that the line voltage is correct at the fixtures.
If slow, with a minute or more between on and off, then that to me suggests over temperature shutdown caused by either high ambient temperatures, poor design (heat sink too small) or poor assembly (light source improperly bonded to heat sink)
If rapid flashing, that can suggest low input voltage such that the internal reservoir capacitor is discharged faster than it can charge. Remember that the stated input voltage range may be in Chinese volts.
For example, a cheap fixture may have been originally designed for 220 volts, and then someone in the factory tried a few and found that they also worked on 120 volts. So after that they labelled future production as being "120/240 volt" without checking if they worked on 108 volts (120 less 10%) or that future batches with slightly different component tolerances also worked at 120 volts.
Do of course double check that the line voltage is correct at the fixtures.
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