1   Lanterns/Fixtures / Modern / Re: Favorite LED Streetlight  on: Today at 10:44:19 PM 
Started by CreeRSW207 - Last post by tolivac
AEL 215W lights installed at the transmitter plant to replace 250W and 400W mercury.Have some of the GE and Westinghouse lights in my collection.Still work.There are some GE Evolve lights that are still 5000K haven't greened out like the ones at the WallMart have.
 2   Lamps / Modern / Re: Osram LED filament lamp flickering after a power interruption  on: Today at 09:58:14 PM 
Started by dor123 - Last post by dor123
I thought LED filament lamps have a similar driver to LED nightlight such as my Eurolux one: https://www.lighting-gallery.net/gallery/displayimage.php?pos=-132879
 3   Advertisements / For Sale or Trade / Re: Clear Philips Lifeguard for a “Great” Price  on: Today at 09:04:20 PM 
Started by Mr. Orthosilicate - Last post by ramdude2014
Wow I paid $1.00 for the EXACT  SAME LAMP FROM HABITAT... this is frustrating!!
 4   General / Off-Topic / Re: Stay Safe!  on: Today at 05:15:23 PM 
Started by CreeRSW207 - Last post by CEB1993
I heard today that the number of South Carolina cases dropped by about 100. I’m still in good shape and fortunate that I can continue to work. Lots of stuff I miss doing, but I think some good will come out of this nightmare.

I’m thinking families with children will reconnect, the environmental health will improve (less people traveling) and there will be a new appreciation throughout the world for things once taken for granted. Perhaps this virus is a “hard reset” for the world so we can have some fresh new perspectives and reformation for health and wellbeing of everyone.
 5   Advertisements / For Sale or Trade / Re: Clear Philips Lifeguard for a “Great” Price  on: Today at 05:11:17 PM 
Started by Mr. Orthosilicate - Last post by HomeBrewLamps
He never responded to my message.


Hope he has fun holding on to a lamp for the next 40 years.
 6   General / General Discussion / Re: Help: Repairing 85W CFL  on: Today at 04:32:00 PM 
Started by HomeBrewLamps - Last post by HomeBrewLamps
An electrolitic cap would heat up fast like that either from reverse polarity, or from overvoltage

Reverse polarity could happen if it is soldered in in reverse, or if some diodes in the rectifier bridge (or single diode for that capacitor in case of a doubler circuit) are shorted and the capacitor is getting AC

Overvoltage in a divider could happen if one side of the load is shorted (due to shorted film capacitor or transistor, ...) and the full voltage falls on the other side. Say if you apply 320V (rectified 230VAC) to a divider of 2 200V capacitors, and due to a shorted component the entire 320V goes to one of them

Overvoltage in a doubler is not possible

You have there some other dead components - possibly the transistors or film capacitors

Besides, they are possibly a result of EOL of the tube - Have you checked the tube ? (say with a T5HO 80W ballast)


I've checked the tube with a continuity tester and both cathodes are intact. I've also checked the vacuume and it seems to glow when high voltage is applied. The ends of the tube also appear white. I can also visually confirm through the clear ends of the tube that the cathodes are intact... I think the ballast failed prematurely.


I did notice that one of the mylar capacitors is shrunken as if it shorted then began overheating.

So basically I should go the route of replacing all of the semiconductor components and caps?

Do you think the choke could have been damaged by the short out or is it more robust than that? The company thag designed the board did implement a fuse luckily.
 7   General / General Discussion / Re: What did you do today lighting wise?  on: Today at 04:25:34 PM 
Started by RyanF40T12 - Last post by xmaslightguy
Not today, but last lighting-related thing I did was mount 8 T5 lampholders & a ballast on a board to make a 4xF8T5 'fixture'.
Originally tested with standard F8 lamps, then my G8T5's arrived yesterday, so I put 3 of those in.
I now have something that'll be used to sterilize any items I order online before they're allowed in the house.
 8   Advertisements / For Sale or Trade / Re: Clear Philips Lifeguard for a “Great” Price  on: Today at 04:18:21 PM 
Started by Mr. Orthosilicate - Last post by sox35
I put this on my watch list just to see if someone is dense enough to buy this! Shocked
It's still there, I wonder why..?  LOL  Roll Eyes
 9   General / General Discussion / Re: What did you do today lighting wise?  on: Today at 04:02:53 PM 
Started by RyanF40T12 - Last post by sox35
As promised, here is a photo of the ballast board we built for our 140W SLI/H lamp.

Thanks to lightingguy1994 for the lovely SLI icon  Linear Sodium Linear Sodium Linear Sodium
 10   General / General Discussion / Re: What did you do today lighting wise?  on: Today at 03:50:50 PM 
Started by RyanF40T12 - Last post by Mandolin Girl
With some of the MDF I had left over from building the lamp box I made the other day I constructed a plinth to put the pole for Gemma on.  Smiley

So now we can get the speakers we were using as a plinth into the kitchen and put them up...  Smiley

That is once I find the [censored] brackets that we bought...  Angry cursing
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