rpm electronic counter

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la.andreaperino
Posts: 5
Joined: 30 Nov 2021, 17:22
Location: Torino
Contact:

rpm electronic counter

Unread post by la.andreaperino »

Good evening everyone, here is my first post; before writing it I checked that there was no useful information available...
Why this post? Simple, a friend, who is about to restore a fulvia, asked me: "you, who are electronic, can you fix my rpm counter?"
Well... I started separating the components and testing the galvanometer... and it actually works.
Not without effort, I managed to separate the pcb from the galvanometer… the surprises began...
transistor and capacitor burst...
I have recovered the transistor code (I don't know if I will have to install equivalents) but I have no information about the capacitor.
I guess it has been connected incorrectly. Would anyone be kind enough to help me?
Do you have a list parts, is there a manual service instrument? I try to post some photos...
Many thanks and best regard.
transistor_ko.jpg
pcb_low.jpg
cond_rotto_low_res.jpg
Huib
Site Admin
Posts: 1778
Joined: 17 Dec 2008, 10:12

Re: rpm electronic counter

Unread post by Huib »

From which type of Fulvia is the rev counter?

Is it made by Veglia Borletti or Jaeger?

I posted on the Veglia Borletti one from the S3 coupé.
See viewtopic.php?f=10&t=5061&hilit=schematic

It is some time ago. Your pictures don't look familiar.
la.andreaperino
Posts: 5
Joined: 30 Nov 2021, 17:22
Location: Torino
Contact:

Re: rpm electronic counter

Unread post by la.andreaperino »

Marvelous,
you hit my problem.
According to the diagram it is a thermistor (r11), now the question is what is the type of thermistor?

The scheme you pointed out to me is my own tachometer.
Thank you for your interest.

:D :D :?: :?:
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