8mm Forum: How can we check the projector bulb?

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Topic: How can we check the projector bulb?

Winbert Hutahaean
Film God

Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003

posted September 04, 2006 05:13 AM

Hi all,

I would like to buy the bulb friom the second market.

Do you have the save way to check the bulb?

1. My friends say that checking their poles using voltage meter wil give some shock that is harm for the filament? Is it true? or is it save to use voltage meter

2. We can see that the fillament is OK, but how we coul dbe sure that someone has never touched it befire (as you have known that our finger prints can burn the bulb suddenly)

3. Referring no. 2 to make everyhting be sure, can we clean the fillament using Alcohol 70%?

thanks,
winbert

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Winbert

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Craig Hamilton
Jedi Master Film Handler

Posts: 501
From: Luton
Registered: Sep 2004

posted September 04, 2006 05:31 AM

Winbert

It is perfectly safe to use a multi-meter to check for continuity. If the reading is high you are coming across resistance, make sure that both pins are clean & not oxidised.

Craig

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I dream of becoming a dealer!!!!!!
Is Perry's Movies for Sale.

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted September 04, 2006 06:42 AM

Winbert, As craig says using a multimeter will not harm the bulb. The resistance accross the pins of a good lamp should be fairly low, a few ohms. High resistance or no resistance will mean that the bulb is no good.

I clean the lamp itself with Isopropyl Alcohol to remove any grease and again this will not harm the lamp.

Kev.

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GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.

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Andrew Wilson
Jedi Master Film Handler

Posts: 784
From: dundonald,belfast,co.antrim,northern ireland.
Registered: Jan 2006

posted September 04, 2006 10:15 AM

Thanks for the tip there Kev.Ididn't know you can clean the lamp with ISOPROPYL ALCOHOL.Thanks again Andy.

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