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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Digital speedo issues - trouble shooting, repairs and alternatives!
Post Info TOPIC: Digital speedo issues - trouble shooting, repairs and alternatives!
Dan-in-a-Van


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Digital Speedo Fuse?
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I spent the day tidying up the previous owners electrical work. Tin foil covered main fuse, scotch-loks used to splice three or four wires, and an lot of twisted wire joints covered in electrical tape :/

Anyway some where along the way I've lost all power to the digital speedo. One of the previous "repairs" was a red wire that was run from somewhere under the tank up to the speedo. I'm pretty sure it was a permanent live because when I used a screw-driver to unscrew the chocolate-block connector I think it sparked to the frame. I'm hoping that there is a fuse hidden away somewhere in the speedo supply circuit?

Can anyone tell me if there is a fuse tucked away somewhere?



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TTRfan


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Sorry Dan but the only fuse is the one atop the battery box cry

If you put a live feed on to the red connector.wire going into the speedo does it light up?

Brian



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Dan-in-a-Van


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I'll give that a go at the weekend :)

A guess the main fuse should be a 15A? The tin-foil covered fuse didn't have a readable rating on it :(

I've attached a pre-tidy up photo for your amusement.

 

 



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ttr steve


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Yep 15amp. Good luck with it.



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JOHNYBOY


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good luck pal that looks a mess ttr steve may have a loom might be an easy option in my mind

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Dan-in-a-Van


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All sorted:)

Followed Brian's advice and proved the speedo still worked by using a flying lead straight from the battery. 

Luckily I've got test leads on my multi-meter that are needle sharp so you can test for voltage by pushing them through the wire's insulation. It makes tracking down a break that bit less painful. I found I had 12v near the regulator but not at the head-stock end. Then I spotted another twisted joint under the tank. This one had been covered with a heat shrink sleeve and the wires had parted inside it.

 



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TTRfan


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RE: Digital speedo issues - trouble shooting, repairs and alternatives - mega thread!
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Hopefully you are all sorted now Dan?

Brian



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pavlos


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Digital speedo issues - trouble shooting, repairs and alternatives!
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TTRfan wrote:

I have a speedo head with the same problem. Does anyone know if it is possible to repair the light? 

I am not clued up on LCDs and I am guessing that it is built into the screen and not repairable?

The speedo still reads.

B1.jpg

 

If anyone is interested, here is a digital speedo head with the cover off. 

Digital speedo apart.jpg

 

Brian

Hi... how did you break-apart the speedo without to crack it ?
I'll give a try to fix my speedo from a short circuit but i don't know how to open it without crack the shell...



-- Edited by pavlos on Wednesday 15th of August 2018 11:15:43 AM

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TTRfan


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I cut around the join with a very thin cutting disc on my Dremel - if I recall correctly.



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pavlos


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TTRfan wrote:

I cut around the join with a very thin cutting disc on my Dremel - if I recall correctly.

What i was afraid of... furious


Thank you



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