Mine stopped working .....any body fixed one? how?
it charges, blue light comes on but wont come on after charged
Those are the same symptoms that one of my Tube lights had. I opened it up and discovered that the battery lead on an end solder pad on the PCB broke off. That solder pad position results in one battery lead being very vulnerable to sharp bending and breaking off during assembly. I pulled the PCB out of the case, found my 25watt pencil soldering iron that was hiding in retirement, and soldered the lead back on. Re-assembly is a bit dicey though. lots to keep track of.
During soldering, I recommend you use a rubber-band around a pair of needle-nose pliers to hold the PCB steady. scrape off a bit of insulation from the loose battery lead - just a bit. Pre-wet the battery lead and freshen up the solder pad with some new solder and rosin. then prop your soldering hand against something and just touch the iron to the lead being held against the solder pad. hold the lead steady for maybe 5 sec after the 'touch' and the solder will have solidified. There is a coil of wire from the battery right at the end of the PCB. Hence a bit of wire forming to avoid such a sharp bend would mitigate future breaks from any dropping shock.
BTW, ensure that the proper size screwdriver is used. Those screws are tight and I had to use rather a lot of downward pressure to keep the head from stripping out.
That tube is fully functional again.
The only other problem I have had with maybe ~50 Tube lights is that one (1) Tube had a leaky power driver such that the light would glow very dimly when off for a long time. however when turned on for a while and the driver heated up, the 'off' condition was brighter than a normal 'low' condition. No solution for that.