“No signal” after the HDfury Integral 2

Steps to fix it

1. Check the LOGO LED. LOGO off means insufficient power or no active input — confirm you are using the official Integral 2 power supply (regulated 5V DC, 2.0A minimum, mini-USB). Power supplies from the HDfury1, HDfury2 or GammaX are rated 0.5–1A and are not sufficient; using one can prevent the unit from starting correctly.
2. Confirm the source is switched on and actively outputting a signal before checking the Integral 2.
3. Check both HDMI input and output cables are seated correctly. For a 600MHz/18Gbps link (4K60 4:4:4 or 4K60 4:2:2 12-bit) you need a certified high-speed 600MHz/18Gbps HDMI cable — a standard cable can pass 4K30 but fail at full 600MHz bandwidth, which looks like “no signal”.
4. If you are trying to feed an HDCP 1.x-only display or AVR, make sure it is connected to the TOP (Downscale) output port, as documented in the manual.
5. Issue a Hot Plug Detection event with a short press of the RESET button (or from the USB GUI, RS232, IR or the app) to force the source to re-send its signal.
6. As a last resort, switch the EDID slide switch to Fixed EDID with L/R Audio. This is a conservative 4K60 4:2:0 8-bit 300MHz stereo table designed specifically to guarantee a picture in almost any setup, so you can confirm the rest of the chain works before returning to Automix or Custom EDID.

Still no picture?

If the LOGO comes on but the picture or audio is still wrong once signal is present, the cause is more likely an EDID mismatch than a power or cabling problem — see EDID issues explained. If your TV specifically advertises 4K60 4:4:4 support but still will not lock, check the extra activation steps most UHD TVs require in the FAQ.