Lost my controller for my duraband ptv7017 and can't select the av chanels. How can I do this without the controller ?

Hello
Without its remote control, you can't select its AV channel. Just try to get a new remote control or buy a universal remote control, which have setup codes for Duraband Tv with it.
Setup codes for Duraband are:
0189 0135 0157 0153 0254 0458 0217
Direct Code Entry

1. Press and hold the SETUP button until the red indicator stays on, then release the SETUP button.
2. Press and release the desired Mode button (TV, VCR, etc.). The red indicator blinks, then stays lit.
3. Enter the 4 digit code from the code tables. Note: after a valid code entry, the red indicator turns off. For an invalid code, the red indicator flashes.
4. With your device on, press CHANNEL UP. If the device responds, no further programming is required. Note: If some buttons do not operate your device, try one of the other codes for your brand.