So, I have a VU TV, 35-43 inch

5-6 days prior when the tv was given power, the red and blue light indicator on tv was blinking on and off, and it took like 15-20 minutes to switch on,so we sent it to repair place as 2 years earlier same thing so he told and switched the fuse(same problem) and we thought he would fix it same,but this time whenever tv is given power there is pre-screen image on tv of what cable tv it is connected even before the VU tv sign appears and there is also constant chirping sound of like insects(it sounds like it but it is not of insects)which earlier there was none of.Any suggestion?