I was in the sound menu eith the low mid high and turned around the knobs until the bars were not miving and more.
then i was in the normal keyboard mode and the knobs did not do andthing anymore.
so i wanted to turn off and on the unit.
but its not turning on and more.
the screen is black and the charching lights are lighting up one after the other from bottom to top.
i tryed pluging it to the charger and turn it off and on again but it stays that way.
Thanks for the reply. No I already tryed that. It does not really turn off. No matter in what position the on/off switch is the leds always light up from bottom to top one after the other snd the screen stays dark.
How long did you let it charge? If the battery is drained, it takes some time until you see any lifesigns (battery charging LED animation). Let it charge at least a few hours, using a dedicated USB charger (PC USB port may not suffice).
Try recalibrating the battery. The next time the OP-1 goes dark because the battery is empty, don’t switch it off, but charge it for about 6 hours with the power switch set to ON. Then the battery meter should work correctly again.
@nio Do you know for how long you didn’t use your OP-1? It is possible for the LiPo cell to get damaged internally due to self-discharge below 3 Volts. After it drops below that for an amount of time the cell gets permanently damaged due to formation of Li2O. This increases the cell’s internal resistance, making it harder for the cell to hold a charge. The energy you put into it will mostly be converted into heat (OP-1 has a low charging current, so you won’t really notice this). If your unit drains over night that would be a good indication the cell needs replacement.
It’s probably best you contact TE directly to check with them.
Ok, I dis more testing and the battery is down to 50% after one night. I remember it used to stay always fully charged. So i ll contact te about battery replacement.
Is „charging when switched on“ enabled (press SHIFT + COM, then T4 die OPT screen, dial blue encoder clockwise until green lightning appears in the blue circle)? I wonder why you switch off and the LED charging animation is running. Was there still a USB connection?
Normal behaviour would be: unit is off, and charger gets connected: LED animation starts (IIRC: when battery is full, all LEDs will light up from bottom to top).