LED lights flashing !!

[BigTom83]

Was called to a pub today, to look at some LED down lights (small single LED's) built into a shelving unit. They flash rapidly on start up then stop and stay on permanently and intermittently start flashing again before returning to permanent. Once i had located the Transformers for them, I found two LED Psu's each feeding 6 of these individual single led down lighters and about 5 GU10 style LED down lighters over the main bar area. The GU10 style LEDs do not flash.

My initial thoughts are the transformer's are at fault. So I've ordered sum replacements.

Anybody else know the fault? Or if its not the transformers what else could it be ( no dimmers on these).

Haven't worked with LED lighting before so not sure where else the fault could be. Any help would be appreciated!!

 

[BillyH]

Are they operated with dimmer switches?

 

[BigTom83]

No there are no dimmers on them. Just conventional one way switch

 

[Joe S]

Gu10 LED's shouldn't flash being mains but the driven versions can flash if there aren't enough lights on the driver. You can buy a device that goes in line before the lights that supresses the extra voltage and bleeds it away from the lights themselves, can't remember the name of it though.

 

[ipf]

If they're blue it could be a warning for when the Wolverhampton cops are coming

 

[MDJ]

I expect the lights are fed via transformers, and the lamps changed from dichorics to LEDs, if so the transformers need removing, throwing in a dustbin and drivers installing in place of.

 

[BigTom83]

The transformers are marked VLM LED power supply unit.

Apparently the lights have worked fine for two years and the flashing only started 6 weeks ago

 

[BigTom83]

If they're blue it could be a warning for when the Wolverhampton cops are coming

Ha ha ha!!

 

[comeinhandy]

Was called to a pub today, to look at some LED down lights (small single LED's) built into a shelving unit. They flash rapidly on start up then stop and stay on permanently and intermittently start flashing again before returning to permanent. Once i had located the Transformers for them, I found two LED Psu's each feeding 6 of these individual single led down lighters and about 5 GU10 style LED down lighters over the main bar area. The GU10 style LEDs do not flash.

My initial thoughts are the transformer's are at fault. So I've ordered sum replacements.

Anybody else know the fault? Or if its not the transformers what else could it be ( no dimmers on these).

Haven't worked with LED lighting before so not sure where else the fault could be. Any help would be appreciated!!

LEDs can and do fail by flashing, going dim or go off. They are often wired in series so one flashing LED will make all those in series flash. See my youtube video here: Fixing LED light bulbs - YouTube they can be fixed.

 

[tazz]

old post......grr