Lipo repair

[Jahay]

Hi, im back again as i still have the same lipo problem.

I tried my soldering iron to reflow the solder but my iron must be rubbish as it didnt get hot enough to melt it. Tried a friends iron and the same problem...

So before i go out and buy a new iron i used a volt meter to check the cells via the balance connector...

I DIDNT GET ANY READING!!!! all my other lipos give a reading... but this wouldnt?
What does this mean? can you work out where there is a problem? what the possible culprit is?

Please get back to me asap

THANKS A LOT

Josh