Problems started with unit sourcing
Fiddling with any electronic eqpt makes some parts getting, say, accdtly such that it is activated/touched for the 1st time ever. & made to last 24x7 H during it's 'life'~time'. but we always think the "WoW"!!!!!! and overlook the basic--------operation, in this.
Fiddling invariably produces unexpected behavior and .......m!
Really in a good mood listn'g to fleetwood m'c, therefore if forgiven, have come down
Your problem lies with power.Rept'dly or casual fiddling is bound to result in consuming some power however small(+ve3V) since we do carry it round. pl don't ask ?, it's a fact !
"cos w/o power or energy nothing happens( a miss-concept, firmly ingrained in homoSapians) and things like battery has a precalculated life-span. if u use battery in this unit, then that's priority-1
-2 is that any metal to metal where lead is added to increase (current)flow resulting in loose connections+sparks(discharge) till its coated with it but invisible to the eye, layer upon layer,resulting such non conductivity of power,but can be rectified by making snug tight connections(manually).
The DVD units power input via the set, due to the above &/or bending of a single pin thru which involves power trnsmission. So get it cofirmed & rectified by anyone who has the know-how, -- how about yourself--- thats the satsfaction, to finish what u yourself let it happen & the finger tips are itching/twitching to finish.
I have apologised already, so all the best..................sodeep