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PostPosted: Sun Jun 15, 2014 3:27 pm 
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Joined: Thu Feb 27, 2014 9:08 pm
Posts: 16
Location: Newbury
Car Model: Saab 900i classic
Attachment:
File comment: So this file details where to find the lights and how to remove/replace them
Saab Dashboard lights1.pdf [430.34 KiB]
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Hi All,
Thought it might be of interest to detail my repair to the dashboard lights of my 1987 SAAB 900i.
This first post details the simple replacement
Part 2 how I dealt with the fact that it didn't work because (I suspect) somebody in the past had damaged the PCB by replacing the bulbs with 5w rather than 2w

James


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PostPosted: Sun Jun 15, 2014 3:38 pm 
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Joined: Thu Feb 27, 2014 9:08 pm
Posts: 16
Location: Newbury
Car Model: Saab 900i classic
My repair seemed transient and kept cutting out. I suspected damaged PCB from previous 5w bulbs so decided to use the original bulbs in new holders using a new supply- see file. Since then, now 8w no problems
Attachment:
File comment: From my notebook
New Doc 92.pdf [896.54 KiB]
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Attachment:
Dashboard lights part 3.pdf [908.18 KiB]
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Hope its useful

James


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PostPosted: Mon Jun 16, 2014 8:39 pm 
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Joined: Tue Oct 30, 2007 9:26 pm
Posts: 5962
Location: North Essex
Car Model: 900Ruby,vert, 9000, 99, Sonett
I've done a similar repair in the past. The trouble arises with the dash lighting when the back of the panel warps through overheating. This is caused when 5w bulbs are fitted instead of 3w bulbs. The problem can be solved better by removing the binnacle lifting the circuit film and filing the back flat. If you can't obtain 3w bulbs use 5w ones but turn the rheostat down.

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PostPosted: Mon Jun 16, 2014 8:57 pm 
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Joined: Wed Aug 31, 2011 5:21 pm
Posts: 390
Location: Glos
Car Model: '91 T5'd 900S Aero, '92 Panda
LEDs would also reduce the chance of melting stuff here, I imagine.

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PostPosted: Mon Jun 16, 2014 9:10 pm 
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Joined: Tue Oct 30, 2007 9:26 pm
Posts: 5962
Location: North Essex
Car Model: 900Ruby,vert, 9000, 99, Sonett
A number of people have done that too.

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PostPosted: Tue Jun 17, 2014 6:21 am 
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Joined: Thu Jun 17, 2004 9:43 am
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Location: Aberdeen Stavanger Offshore ou Le Giraudet
Car Model: Most of them!
Moving this to the knowledge base

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PostPosted: Thu Jun 19, 2014 4:28 pm 
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Joined: Thu Feb 27, 2014 9:08 pm
Posts: 16
Location: Newbury
Car Model: Saab 900i classic
You have to be slightly careful with LEDs. They can get hot and can also be directional. Interesting about the warping; thank you. It would explain why trying to get it right before was always transient.


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