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Registered
Join Date: Jul 2003
Posts: 35
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Broken Rear defroster traces
My rear defroster is not working because all the traces on the glass appear to have breaks in them somewhere along the line. I have no continuity between one side and the other. Short of installing a new rear window, is there a way to fix this? A search of the forum foudn a reference to using some silver conductive paint to touch up the broken locations. Since all the traces are broken, I am looking for a total replacement.
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Senior Member
Join Date: Nov 2000
Location: Great NorthWest
Posts: 3,948
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I think you are looking at replacement glass. I do not believe you can replace only the defrost grid.
John
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'78 Targa in Minerva Blue |
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Registered
Join Date: Sep 2002
Posts: 513
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I have repaired these broken traces in the past using the conductive paint with great results (after many years it still works fine). This can be found at the local Napa around here. To find the brake use a volt meter and find the discontinuity on each line.
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'69 911E 2.7MFI ;996TT;987.2 CaymanS '71 Volvo P1800E wife's; AMG SLK wife's '71 Volvo race car 944S; 986S ; 734WHP drift car (son's) |
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Registered
Join Date: Sep 2003
Posts: 26
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hi,
conductive paint works fine for small scratches in the wires, but most of the time the wires are 'burnt out' after a couple of years (especially when having run 'dry' at different times). moreover, it's quite a gym training hanging in the back of the car and 'painting' those wires over head. most effective: replacement glass. greets pomaro
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je oller, je doller! |
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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
Posts: 21,140
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I know someone on LI who may sell his spare
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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Student of the obvious
Join Date: May 2000
Location: Phoenix
Posts: 7,714
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Here's an article on testing and repairing the rear defroster grid. Sounds pretty time consuming, but probably a lot cheaper than replacing the glass:
http://www.ifsja.org/tech/electrical/defroster_repair.shtml#breaks
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Lee |
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Registered
Join Date: Jul 2003
Posts: 35
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Tanks everyone for your input. I will try to find the paint this weekend and give it a try. If that does not work, I will probably just live with the problem.
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