I have completed receiving part only. The receiver works 5-7 minutes and stops.
Investigation indicated strange behavior of Si570.
After switch on - the Si570 (U9) current 100 mA, in 20-30 sec it becomes 300 mA at once (as trigger). I picked up 3.3V legs 7 U11 and U10 to rest only U9.
The receiver works 5-7 minutes only. I think it is due overheating Si570.
I think I need to replace Si 570.
Has anybody other ideas?