Movement sensing to mode switching query. Very sensitive to vibration, dropping into mixer setting away from voice mode without touching any pot or control.
2006 , PbF but no mention anywhere, output level pot seemed to be the most sensitive, logical as most used one. Solder yucky and partially-cracked (that river ravine type appearance ) but not obviously failed joints at the pins under x30 , but as pots, cannot sensibly do a tug test. Redid solder on all pots and most of the heatsinky joints on that board and replaced vol pot. No pots showed anything amiss monitoring wiper V or R and knocking. Anyway much improved but a serious knock to the board, not the pots themselves will trigger mixer mode. Setting any pot to half and paralleling an insulated (not fingering as induced stray will trigger) R to it then 100K // to half 10K will trigger MIX mode but not 390K // 5K so trigger delta R is about 2 or 3 percent , is this normal , low? any sort of standard for this pot-swiching action trigger level? Adding C at the pots does not seem to be an option - latches up the sensing, unless a very specific amount between 10n and 330nF , so far only tried- posted
13 years ago