I am repairing a disco light unit, this consists of 7 multicolour circular led arrays,
blue was not lighting up or flickering in the centre array only.
i replaced the obviously dead leds, but still flickering,
the control board tested fine.
having eliminated the control board , i decided to replace all the blue leds,
this is where things went downhill- i ordered new leds from a reputable supplier,
and replaced them, the led outline was clearly printed on the board,what could go wrong?
well something did, the leds didnt work and something seemed to be getting warm!
after some hours diagnosis i eliminated everything apart from the leds.
it turned out that the flat on the leds was on the "wrong"side.
(normally i would use the lead length but as the polartiy was clearly marked on the board)
i queried this with the supplier, he said this was normal and the manufacturers put the flat on the anode side to indicate the type of led. and i should have known this.
i would have thought that industry standard meant just that.
i would be interested to hear your views and perhaps an advisory.
tibbles
blue was not lighting up or flickering in the centre array only.
i replaced the obviously dead leds, but still flickering,
the control board tested fine.
having eliminated the control board , i decided to replace all the blue leds,
this is where things went downhill- i ordered new leds from a reputable supplier,
and replaced them, the led outline was clearly printed on the board,what could go wrong?
well something did, the leds didnt work and something seemed to be getting warm!
after some hours diagnosis i eliminated everything apart from the leds.
it turned out that the flat on the leds was on the "wrong"side.
(normally i would use the lead length but as the polartiy was clearly marked on the board)
i queried this with the supplier, he said this was normal and the manufacturers put the flat on the anode side to indicate the type of led. and i should have known this.
i would have thought that industry standard meant just that.
i would be interested to hear your views and perhaps an advisory.
tibbles