The power supply "WILL FAIL" on the DL T4,T5, It is the #1 problem with them, causes all sorts of problems from
No Signal, freezes, re-booting, etc. one of the members here did some extensive work on this problem/issue
there is a "Sticky" posted in the DL section all about it, where stated that replacing the power supply "SEEMS"
To have Fixed the problem.