current draw too high

[mariuste]

• change R310 to 16k
• check R401

IC503 / D513 is the problem

• when IC503 is desoldered the current draw is as expected

• the PWM signal LED_Light_PWM never gets low
  -> turn out the pull-down resistor R520 was way too high, reducing it to 10k resolved the issue

• change R520 to 10k

still the OC7140 draw even in the best case too much current (60µA each). In future iterations they could be replaced by better drivers or have their supply switchable (extend VLED with second mosfet besides P400 for VBAT+ as well).

As the timer variant will not have these LED drivers assembled no change is necessary for now.

Made an enhancement issue -> #37