V boost set up / issue

[christopher509]

Hello everybody. Some information would be appreciated.
I am rebuilding a max from boxes of bits and have got to the point of installing the v boost system. The system was working ok when removed about 2 years ago and dry stored until now.
I tested the system by turning on the ignition and the systems starts to operate but does not open fully or return to the closed position. I can twist the motor a little to full open and it will then close.
If I remove the cable from the motor and operate it, then the motor opens and closes as normal but with the cable reconnected it repeats the not fully open routine.
The butterflies open fully and feel free to move. Battery shows 12.7 volts.
I have checked the clearances as per the manual and all seems within tolerance and have even tried a different motor but the same thig happens. The cable moves freely when disconnected from the motor
Any ideas on what to do next would be gratefully received.

Regards Chris.

 

[one2dmax]

Flex the box itself. It's common for them to develop micro cracks which cause intermittent operation. Flexing the box can reestablish the connection temporarily (while being flexed). If that makes it work then you need to get the board out of the housing and remelt the connections (especially around where the wires are soldered coming into the board).

 

[christopher509]

Flex the box itself. It's common for them to develop micro cracks which cause intermittent operation. Flexing the box can reestablish the connection temporarily (while being flexed). If that makes it work then you need to get the board out of the housing and remelt the connections (especially around where the wires are soldered coming into the board).

Thanks for the advice Sean, I will check it out and let you know how I get on .

Regards Chris.

 

[christopher509]

Thanks for the advice Sean, I will check it out and let you know how I get on .

Regards Chris.

Hello, just a quick update.
Plugged the vboost system into a known good running bike loom and all works well so Seans tip about the control box looks to be right.
Now to open it up and see what can be done.

Regards Chris.

 

[brian hicks]

Hello, just a quick update.
Plugged the vboost system into a known good running bike loom and all works well so Seans tip about the control box looks to be right.
Now to open it up and see what can be done.

Regards Chris.

You will need solder flux paste, a good soldering iron and a magnifying glass. If you are not experienced at soldering then get someone to do it for you.

 

[christopher509]

Thanks for that , I have opened it up and it appears to be covered in some sort of gel so not sure if that is standard or has been repaired in the past?

Regards Chris.