A no-signal message does not always mean the dish has moved. The cause may be a loose cable, a disabled tuner, incorrect LNB settings, or a driver problem. Work from the physical connection toward the software settings.
Check the physical path
Power off the tuner and inspect both F-connectors. Look for loose shielding, a shorted center conductor, water ingress, or a damaged coaxial cable. If a multiswitch or DiSEqC switch is installed, confirm that it has power and that cables are connected to the labeled ports.
Check the tuner and driver
Open the operating system’s device manager and confirm that the tuner is detected without a warning. Close other TV applications that may have locked the device. Reinstall or update the official driver only after recording the current version.
Verify satellite settings
- Correct satellite position and transponder list
- Correct LNB type and local oscillator frequency
- Correct voltage and tone settings
- Correct DiSEqC port and command mode
Separate signal from quality
Signal strength can appear high even when signal quality is zero. Test a known active transponder and watch quality while making small alignment or setting changes. Do not start with a blind scan until the tuner locks a reliable transponder.
Document every change and restore the last known working configuration if the problem becomes less clear.