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Dead Computer / Speedo

A

awilksch

Joined Oct 2006
746 Posts | 1+
Kangaroo Island, South Australia
I have just noticed that my speedo has died! the bikr turns and starts on the electric leg, all lights and indicators work perfect.

Any suggestions to what may cause the computer playing up? when running the screen has been very dim, only just visible, and appears to scroll through the functions, but the backlight does not work and the LCD display is really dim as stated.

Any suggestions would be appreiated.

Cheers!

Azza.
 
yep ....the same thing happened to my speedo , the good news for me was it was still under warranty . the unit was sent to berg aust for inspection and replaced for free .

i never found out what the problem was , check out the trail tech products . the vapor is a nice unit
 
Further thoughts on the matter - It was working when I git back from the force ride, since then I have had the top triple clamp off and on twice, would 'drifting' the top clamp on and off with a piece of soft pine and rubber mallett cause any problems? it was softly as she goes stuff - not laying into it with the mallett or anything.

only other thing I can think of was fitting up LED indicators, but I doubt wether that would have any effect on the computer.

Azza.
 
Okay, any one with a '05 or later model with the slimline speedo / computer.

P48 in the spares / schematics of the (2005) manual shows a small button battery in the base of the speedo / computer, see part nos. 1, 2 and 3.

has anyone had the need to change this battery, if so, were the symptoms of the flat battery as indicated above?

does anyone know the battern number code?

I suspect that this is the root of the problem, and may have come about due to my battery having been very low for some time - strange thing is the battery is good at the moment, turns well and starts... a few weeks ago the backlight on the computer screen was fading out pretty fast though.

Faktor, I know you mentioned the LED indicators once before, but I really dont think that they would cause a malfunction, they are working well with the original relay, they do flash a bit faster, but that is likely to be as a result of the different voltage requirement of the LED over the original incandescent globes. the units are multi-fit 12 - 24v units, so I think that they have their own resistor components built in.

I will try it in the next few days and report back if no other info is forthcoming.

Cheeers!

Azza.
 
I had a KTM 525 07 that did the same thing, the battery was a button cell CR2032 (from memory) but the problem was moisture had caused a sticky greenish slime to build up on the battery contacts. I cleaned them up put in a new battery and all was good.
The Husaberg and KTM speedo appear to be identical.
Another hint, if your unit is suffering from moisture issues, warm up your oven to 100 deg C then turn it off, remove the battery and leave the battery cover off put in the oven on some paper towels with the battery cover up and leave for 20 mins or so (On a rack, central) . (did the trick for me) but BE CAREFUL if the oven is too hot you could get melting problems!
 
The battery was a CR2036, the computer is now working okay, but no sign of any backlighting???

I know I smacked a tree pretty firmly on the headlight mask on the force ride, but the backlight worked the following day and since I got back home, so now I'm wondering if there are any internal fuses or something to look for, I have checked all plugs and wires which all look fine, I dont have any other diagnosis in mind.

Azza.
 
warm up your oven to 100 deg C then turn it off, remove the battery and leave the battery cover off put in the oven on some paper towels with the battery cover up and leave for 20 mins or so (On a rack, central) . (did the trick for me) but BE CAREFUL if the oven is too hot you could get melting problems!
Click to expand...
when i used to work as an instrument tech, i ran across different things that people would soak accidently. i would disassemble, remove any power source (battery) and wash it down with a contact cleaner (type that doesn't eat plastic), let it air dry and then go over it with a hair drier. worked 90% of the time.
 
Thanks Ned, but it definately hasnt been soaked, barely even been wet in the rain really.

I spoke with the dealer who I brought my Berg from, he says that a replacement goes for $450.00 - good news is your ODO kilometres go back to 0!!

I'm going to pull the face off the unit and see if there is any backlight globe or something, even though I dont expect there is, normally LCD's have their own backlight.

next option - ebay Trailtech Vapour??

Azza.
 
Azza - If you decide to change it, I have a brand spanking Acewell computer I ended up not using. It is actually a OEM off a CRF450 but the Honda badge would peel off easy. It has speed & tach but no temp, and is in a surround with turn & beam indicator lights down the sides. I paid 110 bucks for it on eBay. If it helps I can give you any dimensions etc before you commit on that path.
 
Hey Whosa,

Rode it to work this arvo & then home again tonight, the actual display is working perfect, but the backlight is still out.

I think I can live with it (I hear theres a christmas cracker on the line over it - which is really not something I should joke about as Im in hospital tommorrow to have some christmas cracker pipework removed)

as for a replacement, my dealer offered me a second hander off a KTM for a peppercorn price, but it has 8000 on the clock, im still thinking about that one (wife knows that the berg is with me for life - even if I do buy another one, so mileage vs resale value is no prob, Ha Ha!)

next problem is getting my bike trailer back from South Oz mainland to KI (and surviving tommorrow), then I will see if I have any money left, besides I have to be ridin' it to need the speedo to work.

I'll probably take the face off first to have a look see if anything is obviously wrong in there.

Azza.
 
Azza-

I understand the standard 05 and tripmaster equipped 04s share exactly the same functions and features so heres what I know about the 04s.

1/ You need a power supply ex bike- for the backlight and odometer to function- this is what the 3 pin plug is for on the 04s.

2/If you do not have this supply to the 3 pin plug ie bad earth, broken wire etc you can still get the odometer feature to function by fitting an internal battery. This battery also enables the odometer to maintain memory for all the features other than odo, hrs and wheelsize- so that when these units are fitted to batteryless bikes (think KTM 2 strokes) , when the power supply (engine) is turned off they will maintain whatever trip, average speed settings etc they have gathered.

It sounds to me like you have a power supply issue, you need to add a 12v DC supply to the red (12v +ve) and brown (12v - ve) wires on the 3 pin plug as fitted to the speedo.
Note those colours above are on the speedo loom, not the bike loom. They change colours at the plugs on the 04s

(these colours are on the 04 units,I would be suprised if the 05 doesnt share them).
If your backlight comes on, you know your unit is fine and you have to chase down a fault in your bikes loom.

Note this is all based on the 04 units,so im not 100% sure its totally relevant to your 05 but it might give you a few ideas.
 
Thanks AUSBERG, I'll follow that lead over the weekend hopefully, it all makes perfect sense, that is why I was thinking a fuse may be the culprit, however the backlight does normally come on without the bike running, i.e. when you wheel it forward and it picks up an impulse from the speedo sensor???

I'll check it out anyway,

Cheers!
 
awilksch said:
Thanks AUSBERG, I'll follow that lead over the weekend hopefully, it all makes perfect sense, that is why I was thinking a fuse may be the culprit, however the backlight does normally come on without the bike running, i.e. when you wheel it forward and it picks up an impulse from the speedo sensor???

I'll check it out anyway,

Cheers!
Click to expand...

Yep- because the 4 strokes have a 12v DC battery wired up through the 3 pin plug as soon is it gets an input ie wheel sensor triggered or mode button pressed then the backlight should come on.

On a 2 stroke, this wont happen- the digits will show/function when it gets an input ie wheel sensor triggered or mode button pressed but the backlight wont function unless the engine is running and it is getting a power supply from the stator for backlight function.

On a 4 stroke, the units should function perfectly without the internal battery fitted-as they get all the power they need from the bikes electrics.

If you have had to resort to the internal battery for the digits/speed/hours etc to function properly but still have no backlight, really really makes me thing its not getting power from the bikes loom.

The speedo gets its 12v power from the same fused supply that runs your indicators etc so if they flash fine I'd be going straight for the 3 pin plug and looking for 12v there.

Hope you get it sorted out :)
 
I'm feeling like I may be getting closer to the problem, I will let you know when I have had a chance to work on it.

Thanks Gents.

Azza.
 
Well, I have gone back through the circuit diagram in the back of the manual, and have checked the two power wires into the computer unit, being the yellow / red wire and the brown wire, I definately have juice to the unit (to the plug at least), I proceeded to pull the unit apart, got the face off but couldny lift the circuit board.

if tere were a problem with the power coming in, it would be under the board, though I dont like the chance of finding what it is, prolly likely to be circuit board componentry.

interestingly it appears that the unit has taken a fair flogging from something! the plastic face which is covered with the rubber outer skin has been fractured all over the place around the 4 mounting screws.

Its starting to look like I'll have to start on the wife and daughter for a trailtech vapour for fathers day birthday or christmas.

Azza.
 
Okay gents,

Had the berg on charge all day while doing some other important stuff - putting the sticker on the rejuvinated Akra exhauts and the BRP stickers from the force ride.

late in the arvo I started the bike, and the speedo / computer backlight flickered intermittently and stayed on for a bit, verry erratic though. whils this was happening, I started wiggling the endo of the loom up near the headstem trying to further discount the issue of bad connections, (which I had allready satisfied myself wasent the problem).

the battery has given me problems in the past, and seems to start the bike well at the moment, but I'm thinking that the problem may be that the rectifier / regulator may be pushing all of the charge from the alternator to the battery and not through to the speedo??

the wiring schematic would suggest that this is impossible, however if the wiring were slightly different then the power supplu to the speedo could be via the regulator / rectifier???

again all other electrics are working faultlessly.

I will report back again if I have any further progress, however, maybe it is time for a new battery and a smart charger unit to continuously float charge the battery when it is not being used for long periods.

Azza.
 
awilksch said:
Okay gents,

Had the berg on charge all day while doing some other important stuff - putting the sticker on the rejuvinated Akra exhauts and the BRP stickers from the force ride.

late in the arvo I started the bike, and the speedo / computer backlight flickered intermittently and stayed on for a bit, verry erratic though. whils this was happening, I started wiggling the endo of the loom up near the headstem trying to further discount the issue of bad connections, (which I had allready satisfied myself wasent the problem).

the battery has given me problems in the past, and seems to start the bike well at the moment, but I'm thinking that the problem may be that the rectifier / regulator may be pushing all of the charge from the alternator to the battery and not through to the speedo??

the wiring schematic would suggest that this is impossible, however if the wiring were slightly different then the power supplu to the speedo could be via the regulator / rectifier???

again all other electrics are working faultlessly.

I will report back again if I have any further progress, however, maybe it is time for a new battery and a smart charger unit to continuously float charge the battery when it is not being used for long periods.

Azza.
Click to expand...

The loom that enters the computer housing is connected to the board via a connector plug, this could be where your bad connection lies.

Regards

Sparks.
 

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