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Printed Circuit Board Issues


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#1 skoughi

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Posted 06 May 2016 - 09:28 PM

A few issues with my three clock cluster; rev counter that reads fast and switches off when I switch on the lights, fuel gauge that isn't correct but that could be an issue with the sender, temp gauge that reads too high and half of the bulbs don't work! I have a printed circuit board from an SPi and I'm wondering if it's very similar to the carburettor one that I have? I know there is an extra warning light on the SPi (maybe more?) so is it something that I could plug in to quickly see if there's an improvement over the existing one or will it be of no help?



#2 blackbelt1990

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Posted 06 May 2016 - 10:34 PM

What age is your current one? I didn't notice any difference between my 90's Carb and SPi.

There aren't any different warning lights either!

#3 skoughi

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Posted 07 May 2016 - 06:17 AM

Isn't there a warning light in the top left corner?

#4 blackbelt1990

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Posted 07 May 2016 - 06:37 AM

Not that I'm aware of!

There's the battery, oil and high beam. Just like a carb.

You may be thinking of an MPi mini which has the air bag warning light in the top corner.

#5 skoughi

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Posted 07 May 2016 - 08:22 AM

Ahh you could be very right then!! These will then be different from the "normal" PCB's? My old tacho was reading fast so I tried in the tacho from the three clock cluster that I have spare, the tacho from this cluster is reading the same as the old one, i.e. fast. If these are MPi clocks then that'll explain why. I'm going to check the multi plug contacts,earth and the PCB this afternoon and may try plugging in the other set just to see what'll happen! 



#6 blackbelt1990

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Posted 07 May 2016 - 03:58 PM

They usually read wrong if you are using a setup from an electronic ignition car on a car with points and vice versa.

#7 skoughi

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Posted 07 May 2016 - 05:03 PM

Swapped over the PCB from what looks like an MPi cluster connected it up and everything worked splendidly! Even got the fuel gauge working by simply changing the positive connector on the wire at the sender. The rev counter was sorted by taking it apart and finding the small adjuster wheel, connected that up whilst it was apart and could easily adjust the speed of it. So I put it together after I drilled a hole with the stepped drill bit in the side of the plastic casing, now I'm able to adjust the speed whilst it's all together. I don't have a meter to check the engine speed so will have to wait until a mate turns up at the start of the week to get it set properly. I'll probably put a bit of duct tap over the hole. The old PCB had a break at one of the dash lights which must've been causing all the hassle.



#8 skoughi

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Posted 07 May 2016 - 05:06 PM

Also the old tacho had an adjuster wheel in it as well so I'm thinking this one is still good to use but just needs correcting when connected up.






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