Help Identifying 35-year-old Diodes

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toyotaguy

Joined Jul 6, 2013
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I have a "Cooling Fan Control Timer" (relay) from a 1978 Toyota that I'd love to repair than try and source a replacement for. The timer is pictured below with a closeup of the likely damaged components. My intro to EE class was in 1983 and my skills now consist of being able to use a multimeter. Any help would be greatly appreciated.

What I know: The module was made in Japan in 1978. It is from a 12V system and sits behind a 10A fuse. The only named component on the board is a cap with the "Nippon Chemi-Con" logo. The one burnt component appears to be a diode but the other - though appearing similar - has no marking to identify the cathode. Any ideas what I should purchase to replace these two parts? Thanks.
 

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Wendy

Joined Mar 24, 2008
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The owners of All About Circuits has elected not to host discussions of automotive electrical system modifications/enhancements due to safety concerns, the potential of legal ramifications and the possible circumvention of vehicle regulations at the state and federal level.

This thread is against the AAC forum rules, Chapter 6, as seen here:

6. Restricted topics. The following topics are regularly raised however are considered “off-topic” at all times and will results in Your thread being closed without question:

  • Any kind of over-unity devices and systems
  • Automotive modifications
  • Devices designed to electrocute or shock another person
  • LEDs to mains
  • Phone jammers
  • Rail guns and high-energy projectile devices
  • Transformer-less power supplies
This can be found in our Terms of Service (ToS)

Automotive modifications of any kind are strictly forbidden. Therefore, this thread will be closed.

Please try to understand the reasons behind this action, and feel free to browse and use the forums.

You might find answers to your questions in one of these forums:

http://forum.allaboutcircuits.com/showthread.php?t=54400

Another good forum that shares many of the same membership is http://www.electro-tech-online.com/ . Good luck.
 
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