Often because the contact point between the keys and the circuit board is blocked by oil or condensed dust. Open the remote control, touch the small contact surface on the circuit board with your fingers, if the feel is astringent and greasy, then clean with alcohol may receive magic effect. Wipe with alcohol, let dry and pack for a surprise????????????
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Remote control socket is broken, not very good repair, because he has a remote control receiver inside, the general ability of poor people, can not repair, need to have a little professional knowledge