Hi

My mph speedo is faulty. Must be a dry solder joint somewhere. How do i fix this? I cannot see anything that looks to be broke. Is there a common joint on the back of the clocks that is prone to break? I have a multimeter what do i need to do?

 

Any help guys?

 

If you need to i can take a pic of the back of the clocks so you can show me on there.

 

Cheers

Hi

My mph speedo is faulty. Must be a dry solder joint somewhere. How do i fix this? I cannot see anything that looks to be broke. Is there a common joint on the back of the clocks that is prone to break? I have a multimeter what do i need to do?

 

Any help guys?

 

If you need to i can take a pic of the back of the clocks so you can show me on there.

 

Cheers

 

I am no expert but I have a basic knowledge of using a multi meter. The first test I would do is bell the circuits. Switch the meter to the onms setting or there should be a audible setting? Place one probe on the feed tab where the plug goes and follow the printed circuit to the function point. If the circuit is OK it will show up as almost a zero reading on ohms or the bell will sound if set to the bell or resistor setting. This will at least indicate that the circuit is complete. If the circuit isnt then you wont get any sound or the reading on ohms will show as either very high or OL?

 

HTH I might get corrected but thats how I would go about it mate.

 

vini;)

You need to remove the speedo unit itself from the cluster and do the dry joints on the back board. Solder EVERY joint you see whether they look dry or not, otherwise you WILL be taking it out again lol.

 

Remove cluster

undo 2 bottom screws in the middle earthing the bulbs for the warning lights

squeeze in the black plastic tabs and separate the white and black parts

Remove the 4 screws holding the speedo unit AND the 4 screws holding the boost gauge

Unit will fall out so be carefull and DO NOT touch the needles ;)

Hi

My mph speedo is faulty. Must be a dry solder joint somewhere. How do i fix this? I cannot see anything that looks to be broke. Is there a common joint on the back of the clocks that is prone to break? I have a multimeter what do i need to do?

 

Any help guys?

 

If you need to i can take a pic of the back of the clocks so you can show me on there.

 

Cheers

 

 

 

look for solder joints that are dull in colour compared to the others or where the solder is sitting on the circuit bourd like a ball rather than half a ball. or concentrate on ones that might have moved or vibrated ie ones with big things attached or connectors attached

 

to fix it just heat it with a soldering iron till the solder is all liquid

 

to be honest if your going to the effort to resolder any joints you might as well do all of them

Thanks Guys will try this tomorrow.

See the following link for a good how-to on dismantling the cluster :)

 

http://www.angelfire.com/geek/vg30dett/Cluster/Fix_Cluster.htm

Good advice but I wouldnt go soldering anything until you have established that the problem lies there?

99% of the time thats exactly where the problem lies Vini and you have nothing to worry about if just reflowing soldered joints ;)

99% of the time thats exactly where the problem lies Vini and you have nothing to worry about if just reflowing soldered joints ;)

 

Fair play mate, I just didnt want him to go through all that and find it was an open circuit or something simple like that.

It is the clocks because the ones that where in where fine. I only changed them over as these new ones had blue led's in. If it all goes tits up ill just stick the others back in.

I did mine recently and when I reflowed the joints, it seemed as if there wasn't enough solder (half of it disappeared down the hole) so, as an extra precaution I added a dab of solder on EVERY SINGLE POINT... sounds like a horrible job but it's dead easy - and I'm no soldering expert. Had no problems since and my points are now all shiny! :)

Its a good idea to add new solder as the flux will help give a better joint ;)