On Wed, 26 Aug 2020 20:19:57 +0100, John Rumm wrote:

10 W LED flood light has gone remarkably dim. Used it the night
before last and it was dim but just about gave enough light to
avoid
falling over the cars putting the rubbish out. Last night next to
useless.

I had a few filament style GLS LEDs that slowly got dimmer and dimmer
over time.

This was sudden, It's not used much pretty well only to put the
rubbish/recycling out once a fortnight. It was fine two weeks ago...

High resistance between the PSU and LED module?

Or dodgy cap in the PSU..

Got it down, considering it's been up ten+ years the lamp itself is
in preety good nick. Same can't be said for the bit of bent mild
steel bracket or the steel bolts fixing lamp to bracket.

Took the back cover off, all nice, clean, dry no sign of corrosion or
damp anywhere. Took glass off, again all clean and dry no obvious
problems. Fit plug to flying lead, switch on, dim, PSU had it's
output voltage on it so got probes of meter to see what it was
outputing. Prod probe onto one of the LED module connections and POW
blinded... Trying to shield eyes from the module but still be able to
see the connections a couple of mm away from the light source was
fun. The -ve one seemed a bit iffy, reflowed both (despite spots
before the eys), better but not 100% solid. I think there must be a
dodgey connection within the LED module. It works for now and it'll
go back up for the time being.

Putting it back will require a bit of improvisation as the corroded
bolts have expanded and cracked the thin diecast bit of the lamp that
they are threaded into. One side fell away as I was undoing the bolt
and there's not a lot holding the otherside.

Pity they didn't use stainless bolts and ali for the bracket. All the
cover screws are stainless.

Anyone recomend an IP65 10 W LED flood, preferably dark skies
friendly, that doesn't have a mild steel bracket or bolts?

--
Cheers
Dave.