Hello gentlemans, i'm new here, few days ago a friend of mine gave me for free a Logitech Z906 that has some problems
Problem 1 - working for 20 seconds the shuts off and never start again untill next day. I've opened the rear sub box, discharged capacitors and check for faults. I have found the 470uF @ 16v capacitor bulged and r79 and r80 resistors (560ohm, 2watt) with ceramic falling off, i've changed the capacitor/resistors but now i'm facing the problem of "3 led on the console" problem, with multimeter i checked the black cables that enter in the amp from psu and i find 1.7v instead of 5v terminal, going back untill i find the Lm1117s 5v 0.8amp voltage regulator, on the input i've got only 6v instead of 8+ volt.. I've powered Lm1117s separately with a 9v 1604 battery on input and on the output i have 4.97 (yay, i was concerned that Lm1117 was blown too)
My question is: what can i do more to have +8v (or more) on the input of the Lm1117?
PS : first i was thinking to power the spot of the output of Lm1117s with a 5v 800 mA phone charger, second thought was adapting a Pc corsair hx650 psu and trow away full-of-glue-cr*p-and-no radiators Logitech psu.