8mm Forum: Bulb ..new or used

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Posted by Thomas Dafnides (Member # 1851) on March 15, 2010, 11:00 PM:

I bought some "NEW" old stock bulbs on Ebay ...EFP bulbs on ebay, when inspected the 2 plug in prongs are black on all three. Could this happen on new bulbs?

Posted by frank arnstein (Member # 330) on March 18, 2010, 09:05 AM:

Yes it can form by itself Thomas,
I have found these deposits on many dichroic lamp pins on new lamps.

Its oxidisation & usually forms on the pins from contact with the air.

Scrape the deposits off with a blade till they are shiny again & then use the lamps.

dogtor frankarnstein

Posted by Steve Klare (Member # 12) on March 18, 2010, 09:16 AM:

-and to add to that, anything nasty enough to toast the pins would probably vaporise the filament too so it shouldn't be a matter of operation, as Frank says: just oxides.

I like this guy for lamps:

http://www.replacementlightbulbs.com/lampefp.html

It's hard to beat these prices and these are factory fresh too.

Posted by Thomas Dafnides (Member # 1851) on March 19, 2010, 04:14 PM:

Thank you for the info and feedback.

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