Olanb2010 no sound left headphone:
If you have a tester check tip of jack-plug to sleeve, which on a 3-way standard 'phones plug is the longer back one next to plug body. Resistance should read in the region 8 ohms to 32 ohms depending on phones. If open circuit/broken you'll get infinity which on a DMM is usually displayed as O.L, or an analog meter just won't deflect on ohms scale.
If faulty, remove left ear-cushion, open by screws if any, or if glued/ moulded, lever speaker-plate until loose.
If colors are standard, green wire is the left signal, copper is GND.
With speaker solder-tabs facing you, left tab is GND and right tab is Signal, often marked +.
If wire's broken off, clean end & re-solder.
Test continuity (ohms) of speaker across solder tabs.
If phone looks ok this end, problem may be at jack-plug especially at strain-relief. Bend cord along various sections and feel for excessive 'floppiness'. Your break is probably there. Cut & join or fit another jack-plug.
Dude exact same thing happened to me... i just bought today my new charcharias and then there was like some wierd noice and then it just went off/black
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