Is the Display on a 2006 TE250 Backlit?

[Herb]

I have not been able (in spite of repeated google searches) to figure out if my display on a 2006 TE250 is backlit.

If it is not, then all is fine

If it is, then I suppose there is a small lamp in there? Or maybe it's all part of the board.

I have found a video on youtube which shows the dis-assembly of the unit, so that part does not seem too hard...

 

[XLEnduroMan]

The dash on our bikes, looks just like yours, IS backlit.

 

[Herb]

Hi Thanks !

Anybody : Any idea what back-lights it in there, is it a (replaceable) bulb or just part of the board?

I am afraid that - maybe - there's nothing I can do about it, as it's part of the pcb board.

 

[Trenchcoat85]

I'm thinking it's an electroluminescent or a buncha LEDS but I don't know. I doubt if it's fixable.

seriously- get an Endurance II. you may be able to use your sender; if so, buy the computer only. $50-$80.

 

[Herb]

Thanks ! That would make it maybe easier ... or harder

If it's just electroluminescent then maybe it's just a bad contact.

 

[Herb]

I went ahead and first removed, and then opened up the unit ... a tiny little diode (or resistor or fuse ? ) fell out.

It would be difficult to re-solder it, esp. not knowing which way it has to go (for a diode).

It put the unit back in the bike and it still works, but again without backlight.

I really can't tell what that thing is, it seems to be glass and polarized (yellow band on one side). Does not look like a resistor to me, and it's too small to be a fuse?

Also, I can see exactly where it fell off from the printed circuit board, it was a poor solder joint.

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[norma stitz]

Solder it back in, you've got a 50/50 chance of getting it right, which equates to a 100% chance of getting it wrong, so be prepared to do it twice. Put some glue on it afterwards so it stays put.

 

[Herb]

Yes ... that could work ... the only problem is that that component is tiny and very difficult to solder. You can bet the first time around I will solder it the wrong way. Plus it could short out something else. Was hoping to get further input before embarking on a resoldering adventure.

Btw it looks like another resistor-like component has overheated as well (burn marks) so perhaps the latter should be blamed ...

Will take a picture of the pcb next time I take it apart.

A new SWM tachometer might work as a replacement, when available ? :




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[Herb]

After some further investigation I found out that the component that "fell out" (due to a poor soldering job) is a shottky diode of this type:

"mini melf (=metal electrode leadless face) shottky diode". They are known to be a real &#@$ to solder.

In fact some say the name "melf" stands for "Most End up Lying on the Floor"

Circuit board pictures show the diode needs to be soldered back with the black (or colored) side towards the tach connector.

Anybody else had these things fall off inside their Husky speedometer?

The brand of the whole instrument is btw ECIE, http://www.bloomberg.com/profiles/c...-electric-components-&-instruments-europe-srl

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[Herb]

Here is exactly the same problem described (in 2011) by somebody else :

http://www.thumpertalk.com/topic/903565-fixing-te250-speedo-backlight/

The diode falls off ... it then burns another one or two resistors as well. So just soldering back the diode by itself did not seem to solve the problem. The resistor needs to be fixed too. Wish I knew what kind of resistor it is.

Here it is claimed that a very similar speedo was installed back then in the 610/510/450 :

http://www.thumpertalk.com/topic/274432-te610-speedo-setup/

so the setup procedure should be rather similar (but not the speedo itself) ?

For reference: for the 2006/2007 TE250's device model Ecie 7134, Husqvarna part number 8A00A5570