Quote:
Originally Posted by Brian Cameron
What brand/model of SCR / thyristor did you use for the repair? Wondering if the specs for the new one are somehow different and causing a problem.
I’ve not had the problem you describe but i did fry my 79 SC CDI when boosting a flat battery and inadvertently reversing the polarity on the jumper cables, whups.
New zener diode set it right and no problems since, although i’ve only run it for a few hours since i’m still finishing up a front end rebuild. I’ve bought replacements for all the other components so i can rebuild when/if needed, even if components become NLA.
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Hey Brian,
Thanks for your input. I bench tested the old SCR, & it was serviceable. I re-installed it. (changed it out originally because I had the CDI apart & from reading can also be the cause) Capacitor C8 was the main problem originally, as it was blown.
Car is now normal operation.
The new SCR I installed was part number 50RIA80 so possibly not enough voltage. I'll source a 50RIA120.
Thanks again for your input.