About to order diy cob for the first time and from KingBrite.

[Lopez7808]

I just got 6 cxb3590 chips and they are all bad. I tried 3 different led drivers and I got nothing. The drivers I have to test them are good and I pulled them from the light system to test the chips. So pissed I spent good money on bad chips and most likely Jerry at King Brite will not replace them.

 

[Metacanna]

I think I've seen some light engines with 1212(or 1812)on eBay. The seller was from Germany I guess...

http://www.ebay.co.uk/itm/5x-CITIZEN-117-5W-LED-Chip-4000K-CITILED-cob-module-CLU048-1212C4-403M2K1-/222366269603?hash=item33c61000a3:g:crYAAOSwt5hYa6A2

There's a seller from Estonia with good price for the 1212, 3000k, 3500k, 4000k, 80 and 90 CRI.
I bought 5 units last week. Should receive this week.

 

[sixstring2112]

I just got 6 cxb3590 chips and they are all bad. I tried 3 different led drivers and I got nothing. The drivers I have to test them are good and I pulled them from the light system to test the chips. So pissed I spent good money on bad chips and most likely Jerry at King Brite will not replace them.

are you sure its not a bad holder or wiring issue? hard to believe all 6 would be bad

 

[Lopez7808]

I tried 3 different drivers even pulled one from a light system I had in use.

 

[sixstring2112]

I tried 3 different drivers even pulled one from a light system I had in use.

yeah i read that part,are you using ideal cob holders?and also what type of wiring series or parallel? one bad holder will fuck the whole thing up

 

[zep_lover]

not saying it couldnt happen but i have bought 52 cxb3590's from king brite and no problems with any

 

[sixstring2112]

I tried 3 different drivers even pulled one from a light system I had in use.

also what driver for 6 cobs,i take it you are using 36v cree from jerry right ?

 

[Lopez7808]

I always wire my light systems in series.

 

[sixstring2112]

I always wire my light systems in series.

do you solder or use holders?

 

[Lopez7808]

I have ordered before never had a problem. This is a first for me.

 

[sixstring2112]

I have ordered before never had a problem. This is a first for me.

you asked in a dif thread about using 4 cobs with this driver hlg 240h c1750b ,it will not light up 6 cobs if thats the drivers your trying so thats why im asking about drivers and holders

 

[Lopez7808]

I used 4 cobs got nothing then switch out two and switch two again.

 

[Lopez7808]

It does happen I seen bad chip get out of Intel when I worked the at the D1D fab