Hai, guys my lama v4 has totally stoped responding to any input from the tx.. It moves ie rotates when some interference comes in.. It all happened after I upgraded my lama to metals... What shall I do???

Might be your antena wire is touching some metal part on that . If it's all ok then check whether your TX and RX crystals are properly fitted and also the TX antena is fully extended .
Happy flying ,
Sahevaan

let me try dat sahevaan