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176 posts

Master Geek


Topic # 113188 9-Jan-2013 00:51 Send private message

So I'll start with a small disclaimer :)

Not sure if this post should sit in 'off topic', but it is electronics related, hence posting here...


The digital speedo on my bike (Hyosung 250) motorbike has kicked the bucket.

One fine day, idling in the garage, warming up, nek minnit, dead.
Doesnt appear to be a fuse etc...

I've taken into Robinsons instruments, but they suggested it might be too hard to find parts etc.

The LCD appears to have metal? wires in it, that have broken? (No idea how this works...)


Any fellow GZ'ers experienced similar, or know how to fix?

This is what a normal one looks like..
http://cwaye.com/wordpress/wp-content/uploads/2010/12/gt650r_instruments.jpg

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13 posts

Geek


  Reply # 742018 9-Jan-2013 05:40 Send private message

The display is a VFD. Is the glass broken in which case its not repairable. Could also be a poor solder joint on the pcb or a failed component in the display drive circuit. I assume Robinsons have the ability to fault find at component level. Check for tiny circuit board fuses.

http://www.optifuse.com/fuses-SMT.php

http://en.wikipedia.org/wiki/Vacuum_fluorescent_display

http://www.hyosungparts.asia/

http://korider.com/index.php?topic=11409.0

2934 posts

Uber Geek
+1 received by user: 34

Trusted

  Reply # 742029 9-Jan-2013 07:09 Send private message

VFD has wires inside which can break. Our European oven display broke after 8 months.




You can never have enough Volvos!


1020 posts

Uber Geek
+1 received by user: 46


  Reply # 742191 9-Jan-2013 12:32 Send private message

If it's a VFD, then it could be not getting power to the wires in it.

ToddFun did a repair of a VFD, edumacational...

http://www.toddfun.com/2012/09/22/radio-repair-bad-vacuum-fluorescent-display-vfd/



E
dit: I tried to embed Todd's video here, but the youtube bbcode is broken for some reason, gets stripped out.




---
James Sleeman

My hobby - listing small amounts of interesting/useful hobby electronic components hardware and stuff on Trademe for cheap, all good geek stuff for the "maker" revolution ;-)

Tip for Trademe addicts: install an addon for your browser to get thumbs for all listings.



176 posts

Master Geek


  Reply # 750440 24-Jan-2013 21:53 Send private message

Niel: VFD has wires inside which can break. Our European oven display broke after 8 months.


Yep, wires were busted.

Ended up buying a replacement off ebay for ~300...ouch!

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