Wisper 705SE classic power switch?

[rroh]

I inherited a majestic Wisper 705SE, likely an early model because the battery is behind the seat tube and the pedal-assist is a simple 7-step assist. The battery innards were recently replaced and it charges perfectly, but cuts out almost immediately under load. When it cuts out, all indicators turn off - neither the handlebar control nor the on-battery power indicators show any life. I initially suspected the new battery, but when I turn the key to the off position and abck on again, the power sometimes comes back sometimes not. I am suspecting that the key switch has somehow become corroded or perhaps the contacts within have worn out.
1- Is there a simple way to test the switch? I assume that I can just open up the battery casing and bypass the switch?
2- If the switch is faulty, can it be repaired/replaced? It seems to be a more complex piece, incorporating both an electrical switch and a mechanical bolt to secure the battery on its bracket.

 

[Wisper Bikes]

Hi Rohh,

We can replace the lock for you, we have them in stock. Have a look in our On line shop. If you have problems please drop us a line.

All the best, David

 

[vfr400]

There was one model of Wisper that had problems with melted fuse holders, so have a look at that. Another thing worth checking is the solder joints on the back of the key-switch. Re-melt them and give them plenty of heat just to make sure because they can look OK, but aren't.

 

[rroh]

Thank you vfr400 - I'll have a look at the solder joints tomorrow.

Thank you David; good to hear the part is available. Hopefully, I can pinpoint the problem!