What do you mean by racking their brains?

Bob was wracking his brain, trying to think where he had seen the drivers before. Note: You can refer to this activity as brain-racking. All your brain-racking is making absolutely no contribution to the world. See also: brain, rack Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012 rack your brains (orbrain)

Why is my Yamaha RX v657 AV receiver not turning on?

The most likely cause of the problem is C405 going open circuit, next guess would be C406 going open circuit so the IC is trying to run on a pulsed supply. Brian. According to your first post, VHIS and CB407 are your AC mains input. VHIS and CB407 and are connected to VSHI and CB402 in the upper middle connector shown in your circuit.

Which is the correct spelling rack and ruin?

wrack and ruin, storm-wracked, and pain-wracked, but other Standard written evidence, including some Edited English, will use the variant spelling for each. The spelling ‘rack’ is now used in all senses except for the seaweed called wrack. So it’s “rack and ruin,” … “racking my brains,” and so on.

Which is correct rack or rack in one’s brains?

Both wrack and rack are correct in the “one’s brains” phrase: USAGE The relationship between the forms rack and wrack is complicated. The most common noun sense of rack, ‘a framework for holding and storing things,’ is always spelled rack, never wrack.

What are the features of the Yamaha rx-v667?

The Yamaha RX-V667 has more than just an upgraded juicy amp section. Yamaha has done some serious upgrades in user functionality and video enhancement features. The RX-V667 sports a new GUI (OSD) with HDMI overly typically found on their more expensive RX-V receiver models (ie. RX-V1900 and above).

What is polarized line plug on Yamaha RX v657?

For products intended to operate from battery power, or other sources, refer to the operating instructions. 12 Grounding or Polarization – This product may be equipped with a polarized alternating current line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature.

Where does the phrase racking your brain come from?

The sense conveyed by “racking ones brain” is of stretching it past its limit and is the intent of the earliest usages of the phrase. The idiom references the torture device that stretched it’s victims, which was itself named for it’s obvious resemblance in function to devices for stretching out cloth, parchment or hides.