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Cessna 152 Instrument Light, Rheostat switch won't completely turn bulb off

chauvin View Member Profile	Sep 6 2010, 10:08 PM Post #1
Cessna 152 Member Group: Newbies Posts: 1 Joined: 3-September 10 Member No.: 11,012	Instrument light did't work at all. Replaced transistors in dimmer unit which solved the problem. The rheostat switch won't completely turn the bulb off. There is a slight glow in the full ccw position. Is this normal, or should the rheostat switch be replaced thanx Mike

bernoulli View Member Profile	Sep 22 2010, 08:37 PM Post #2
Space Shuttle Member Group: FL350 CREW Posts: 3,266 Joined: 11-December 04 From: (KLFT) Lafayette, LA Member No.: 348	QUOTE(chauvin @ Sep 6 2010, 09:08 PM) [snapback]132648[/snapback] Instrument light did't work at all. Replaced transistors in dimmer unit which solved the problem. The rheostat switch won't completely turn the bulb off. There is a slight glow in the full ccw position. Is this normal, or should the rheostat switch be replaced thanx Mike It's the same in our 210. Likely a Cessna thing.

Fast Jet View Member Profile	Sep 25 2010, 11:43 AM Post #3
Space Shuttle Member Group: Full Access Members Posts: 1,533 Joined: 7-January 05 From: EGLL Member No.: 517	QUOTE(bernoulli @ Sep 23 2010, 01:37 AM) [snapback]132685[/snapback] It's the same in our 210. Likely a Cessna thing. funny you should say - that - I experienced the same thing on just about all Cessnas. Espsh the light that is red and is situated on the overhead panel - for want of a better word. I think it might be a safety feature as, if yo are suddenly plunged into darkness or rather very reduced light then it would seem cool to have something.

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