In the first PIP there is no problem. Later PIP is not done on the current channel; instead, previous channel is PIP ed.
Enigma restart temporarily solves the problem. Swap PIP, move PIP is OKEY.
It was OK at the start, for months. Later I had to change antenna and couldn't tune first. SNRs was bad, couln't tune to same channels.
I think the problem started then. Now I fixed the antenna, SNR s are OKEY.
Re scanned the channels, deleting previous, but problem is NOT solved!