Last update for tonight. I reset, the only powered HUB that works in the decoder. It had 3 cold welds. With 5V and 2.5A power supply. I mount everything, with decoder on standby on PIN P8, I read 5.08V. I start the decoder with one channel on DTT, the voltage is 4.97V. But from the few tests I have done it seems a little better. Tomorrow I will try to put a 12V fan. and let you know. For today I do testing. Thank you so much. PS: Definitely I want to take a look at the capacitors C204, C210 and C211.