LG flatron monitor with touch sensor power switch... won't turn on. Power supply puts out 5VDC OK. The power -on/off sub board was very dirty. The sensor seems to consist of a odd shaped piece of foam sandwiched in a fold of conductive fabric . I am looking for a way to fake/ hack the logic of the touch sensor or bette r still add a physical on/off switch. From motherboard I get 5VDC, GND, Key0, Key1, BL0, BL1. all but the BL0 an d BL1 are passed on to a five button sub-board which makes me think these two are power-on-off related. THere is a six legged IC "S821"and a 3 legge d "A0" (SMT= flatfoot devices all) that I associate with the sensing/powe r part, plus four LEDs for looks, with four resistors. Any ideas of what kind of tickling could excite this thing?
- posted
6 years ago