I'm trying to get a line 6 flextone 3 working for my dad (it belonged to my brother before he moved to another country).
Anyway - it's been sitting around for a while, and I've cleaned it up a little,successfully upgraded the firmware with line 6 monkey to 1.10 and had a look around the circuit boards to check if there were any obvious loose connections/corrosion etc. which there weren't.
It currently only produces the faintest of sounds - I rig it up to an audio out to test it, and you can definitely hear the audio, it's just extremely quiet.
I was hoping someone might be able to point me in the right direction for the next step - maybe something in the amplification circuitry needs replaced? All lights etc. appear to be fine, and you can hear the 'whoomf' from the cone when you switch the amp off, so I'm assuming that's ok!