Speedo reading again, only different - Page 4 - SV650.org

Toooldtodie · 25-08-15, 04:52 PM

Good question! That would probably do it, but it's a 120/60. I did know that (but checked anyway!).

Got to be the electronics in the instrument cluster surely? Then what?!
Ignore it and have a "low mileage example" when I trade it!!?

Bibio · 25-08-15, 05:36 PM

only other thing i can think of now is a dodgy connector to the clocks or the ECU or a fracture in the loom. apart from that i'm at a loss.

Toooldtodie · 25-08-15, 07:20 PM

Thanks mate.
I've checked connectors (shiny!!) and wiring looks? ok. I have checked voltages, etc so I can only assume the signal is not being calculated by the gizmo in the clocks properly.
It's stuff like this which gives a +1 for buying new. At least you know whats been done to the bike and by which incomp (mainly me) rather than trying to forensically uncover past bodging or botched work...

Do you really stand more chance of winning the lottery if you buy a ticket?

Cheers Bibio your advice and tutelage has given me more confidence to tackle the maintenance on my bike and your chain adjuster plates still look good as new BTW.

empty · 28-08-15, 08:17 AM

Having dissected a set of curvy clocks, and I guess the pointy ones can't be too dissimilar, it might be worth a quick check for any loose components or duff solder joints in the clocks if you are vaguely handy with a soldering iron? The circuitry for the speedo is fairly simple (basically it has a few simple components then feeds into the main microprocessor) so there isn't much to go wrong.

Toooldtodie · 28-08-15, 08:31 AM

How easy is the dissection?

I'll start googling now.
Whatever is wrong it's consistent. It's very precisely inaccurate!

Thanks for the steer.

empty · 28-08-15, 08:50 AM

The curvy ones has a few screws on the back once removed. I don't know on the pointy ones.

Easiest thing to do once inside is to find the pin on the connector then follow the trace on the circuit board. At this point we're pretty much clutching at straws as to whether this is the problem but it is worth a shot. Any component is likely to be quite small, so you'll need a soldering iron with a fine tip.

25-08-15, 04:52 PM	#31
Toooldtodie Member Join Date: Jun 2012 Location: Chelmsford Posts: 410	Re: Speedo reading again, only different Good question! That would probably do it, but it's a 120/60. I did know that (but checked anyway!). Got to be the electronics in the instrument cluster surely? Then what?! Ignore it and have a "low mileage example" when I trade it!!? __________________ Thought I was in a bad mood, but it's been 30 years now, so I suppose it's just who I am. 05 SV650s now with proper suspension, hurrah!

25-08-15, 05:36 PM	#32
Bibio Member Mega Poster Join Date: Jul 2008 Location: here as devil's advocate Posts: 11,540	Re: Speedo reading again, only different only other thing i can think of now is a dodgy connector to the clocks or the ECU or a fracture in the loom. apart from that i'm at a loss.

25-08-15, 07:20 PM	#33
Toooldtodie Member Join Date: Jun 2012 Location: Chelmsford Posts: 410	Re: Speedo reading again, only different Thanks mate. I've checked connectors (shiny!!) and wiring looks? ok. I have checked voltages, etc so I can only assume the signal is not being calculated by the gizmo in the clocks properly. It's stuff like this which gives a +1 for buying new. At least you know whats been done to the bike and by which incomp (mainly me) rather than trying to forensically uncover past bodging or botched work... Do you really stand more chance of winning the lottery if you buy a ticket? Cheers Bibio your advice and tutelage has given me more confidence to tackle the maintenance on my bike and your chain adjuster plates still look good as new BTW. __________________ Thought I was in a bad mood, but it's been 30 years now, so I suppose it's just who I am. 05 SV650s now with proper suspension, hurrah!

28-08-15, 08:17 AM	#34
empty Member Join Date: Oct 2004 Location: at work mostly Posts: 286	Re: Speedo reading again, only different Having dissected a set of curvy clocks, and I guess the pointy ones can't be too dissimilar, it might be worth a quick check for any loose components or duff solder joints in the clocks if you are vaguely handy with a soldering iron? The circuitry for the speedo is fairly simple (basically it has a few simple components then feeds into the main microprocessor) so there isn't much to go wrong. __________________ Mark T Eagles may soar, but weasels don't get sucked into jet engines.

28-08-15, 08:31 AM	#35
Toooldtodie Member Join Date: Jun 2012 Location: Chelmsford Posts: 410	Re: Speedo reading again, only different How easy is the dissection? I'll start googling now. Whatever is wrong it's consistent. It's very precisely inaccurate! Thanks for the steer. __________________ Thought I was in a bad mood, but it's been 30 years now, so I suppose it's just who I am. 05 SV650s now with proper suspension, hurrah!

28-08-15, 08:50 AM	#36
empty Member Join Date: Oct 2004 Location: at work mostly Posts: 286	Re: Speedo reading again, only different The curvy ones has a few screws on the back once removed. I don't know on the pointy ones. Easiest thing to do once inside is to find the pin on the connector then follow the trace on the circuit board. At this point we're pretty much clutching at straws as to whether this is the problem but it is worth a shot. Any component is likely to be quite small, so you'll need a soldering iron with a fine tip. __________________ Mark T Eagles may soar, but weasels don't get sucked into jet engines.

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