Tonsheng is dead

[Turnip]

Hi, I have converted an On one inbred using a Tongsheng TSDZ2 , I’ve been commuting for nearly two years with no problems until last week 1 mile in only 16mile commute home. I think it hissed I had a skull cap on so can’t be sure and then the bike completely died, I thought it was because of lowish battery and the bitter cold but after fully charging the battery it’s still dead, my question is where do I start to try and problem solve it?

 

[Nealh]

Do you have a meter to check the battery discharge voltage and the charger voltage ?
If not buy one to do so.

If the battery is ok and one gets a good reading , the tsdz2 is next.
Does the display switch on ?

 

[Turnip]

Do you have a meter to check the battery discharge voltage and the charger voltage ?
If not buy one to do so.

Battery did charge ok went from red to green .

 

[Turnip]

Do you have a meter to check the battery discharge voltage and the charger voltage ?
If not buy one to do so.

Battery did charge ok went from red to green .

 

[Turnip]

If it was hissing could that be a fuse going ?

 

[Turnip]

Just realised my son has “ borrowed “ my meter .

 

[Turnip]

Do you have a meter to check the battery discharge voltage and the charger voltage ?
If not buy one to do so.

If the battery is ok and one gets a good reading , the tsdz2 is next.
Does the display switch on ?

 

[Turnip]

I’m going to get a meter to double check and I’ll get back to you.

 

[Nealh]

The TSDZ2 has no fuse but the battery will usually have a discharge fuse , if one see's 0v then a fuse has blown. If the display doesn't switch on then it means no power is getting to the display via the battery.

 

[Turnip]

Looks like I’ll have to wait for the multimeter to be delivered , just checking but when I said the battery was dead, I meant to say that the battery did charge fully as much as I can tell as the charger went from red to Green . Doesn’t this mean the battery did charge ?

 

[Nealh]

Yes it should do , as this is normal process for a generic charger.

Do you know if it was the battery or tsdz that made the noise ?

 

[Turnip]

Yes it should do , as this is normal process for a generic charger.

Do you know if it was the battery or tsdz that made the noise ?

Unfortunately I don’t , I had my skullcap on looks like I’ll have to wait and see what the multimeter says. Thanks for the reply

 

[Turnip]

So I’ve managed to check battery output which is fine, after fiddling around with connections the screw now flickers and flashes . The off button doesn’t work I’ve been drying the bike out in front of the wood burner, I’m hoping this will work have you any advice about what else I can do to prevent this happening again?
thanks

 

[Turnip]

Screen sic

 

[Nealh]

You didn't mention anything about getting wet ?
But then again should have twigged it from the start, so many folks mention issues like yours but never divulge they rode thru a downpour or left the bike out in the rain.

 

[Turnip]

I hadn’t left the bike out in the rain but had been commuting in the usual cold and rainy conditions so I’m only guessing that moisture could’ve been the problem. Still haven’t reconnected everything yet so I’ll have to see.

 

[Turnip]

Well after reconnecting the screen is still flashing and the on/off button on screen is not working, have you any advice of what I can check ? I’m wondering if it’s the screen itself ?

 

[hech]

Hullo Turnip, been thinking of buying a Tongsheng myself so I was alarmed at your catastrophic headline 'Tongsheng is dead'. 'Nothing of the sort' I would cry, it is merely showing symptoms of a general non-covid malaise common to ebicycles exposed to the British weather for a prolonged period. If you have been commuting 16 miles a day for two years then both you and the kit have managed 20 000miles or more which is pretty damn impressive. ...
Do you bring the bike in to dry overnight?
Do you feed it steroids?
Send away for a new screen/control panel. I dont know the Tongsheng system but imagine it would be similar to Bafang. It is a cheap and easy swap and the prime advantage of kits over ready made e-bikes. Assuming that the fault lies on the handlebars of course.

 

[Turnip]

Yes, I think you’re right, have to say it’s an impressive bit of kit, I’ve ordered a new panel. Let’s hope that’s the fault.

 

[Turnip]

Hullo Turnip, been thinking of buying a Tongsheng myself so I was alarmed at your catastrophic headline 'Tongsheng is dead'. 'Nothing of the sort' I would cry, it is merely showing symptoms of a general non-covid malaise common to ebicycles exposed to the British weather for a prolonged period. If you have been commuting 16 miles a day for two years then both you and the kit have managed 20 000miles or more which is pretty damn impressive. ...
Do you bring the bike in to dry overnight?
Do you feed it steroids?
Send away for a new screen/control panel. I dont know the Tongsheng system but imagine it would be similar to Bafang. It is a cheap and easy swap and the prime advantage of kits over ready made e-bikes. Assuming that the fault lies on the handlebars of course.

So the replacement screen finally arrived, I’ve plugged it all in and now it’s a blank screen absolutely nothing? Not sure what to do now, battery output is fine and connections all look good.