Nevertheless, all buyers are warned about proper HYDRA usage, some just do not follow my guides and connect/disconnect active scart cables to/from working / scanning HYDRAs. It may happen that NCS RGB chip gets fried.
NEVER connect / disconnect SCART PLUGS
while HYDRA IS SCANNING for ACTIVE PORT
You may ask why..
Designing device, I put much effort into ability to passthrough many types of signals: from composite to component. To protect device and not to cut signal`s range, HYDRAs have additional ESD protection diodes, but for a short period of time when scanning for active scart, Hydra is defenseless. If You got hit that moment plugging powered on device, You will damage RGB chip with ESD voltage that may reach thousands of volts (not dangerous for you, but electronics is fragile..). This chip will become very hot and protection will brick hydra. Probably knight rider effect will stop, Hydra will be unusable, until one of chips replaced (NCS2564).
USE SIMPLEST SCART CABLES POSSIBBLE
and please, do not forget: