(Topic ID: 313922)

Yet another F14 flashers not working thread

By Homeslice666

2 years ago


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#6 2 years ago
Quoted from Homeslice666:

I did not realize the solenoid table listed the associated transistor. So it is Q14 I need to inspect/replace. Thank you Grumpy and Slochar!
Flasher #7 was pulled by Williams. I'd like to reinstall this in the future.

Were these flashers working before and then failed?...or have they never worked? (depending on answer, a different course of troubleshooting)
Just to make sure, since it wasn't mentioned - both bulbs are the correct #89's? You said they were dim, usually when the driver transistor fail they fail completely dead...only very occasionally they fail partially.

slochar - keep in mind that there is only one A/C relay, and if the AC relay is bad it will affect all of the switched coils & flashers, not just one.

#12 2 years ago
Quoted from pins4u:

Flasher #7 may not be implemented in software. I would take some measurements before bothering to install any parts or make any mods.

Flasher #7 is implemented in software, it only doesn't operate because the circuit & bulb hardware is removed. It can be restored by reversing the steps of the original mod to remove it. There's a helpful video at the link below.
https://www.ipdb.org/files/804/Williams_1987_F_14_Tomcat_Service_Bulletin_41.pdf

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