Možda bi mogao i jeftinije proći.
Ako sat rec. koristi eksterno napajanje, kupi drugi adapter sa istim el. karakteristikama i možda ti pomogne.
Ako je napajanje ugrađeno u njega ili ako ovo prethodno ne pomogne stvari se malo kompliciraju:
Citiraj:
-The external shield, and the shields of all connectors, should be connected together. If the power supply design is non-isolated, this external ground should be connected to the ground plane of the PCB at only one point; this avoids large current through the ground plane of the PCB. If the design is an isolated power supply, this external ground should be connected to the ground plane of the PCB via a high voltage capacitor, such as 2200pF@2KV. If the connectors are mounted on the PCB, the outer perimeter of the PCB should contain a strip of copper connecting to the shields of the connectors. There should be a break in copper between this strip, and the main ground plane of the circuit. The two should be connected at only one point. This way, if there is a large current between connector shields, it will not pass through the ground plane of the circuit.
-A star topology should be used for ground distribution, avoiding loops.
-Isolated power supplies require careful checking for parasitic, component, or internal PCB power plane capacitance that can allow AC present on input power or connectors to pass into the ground plane, or to any other internal signal. The AC might find a path back to its source via an I/O signal. While it can never be eliminated, it should be minimized as much as possible. The acceptable amount is implied by the design.
|
Vrlo je izvjesno kako te čeka čačkanje po samoj tiskanoj pločici receivera. Možda bi neki RTV servis mogao pomoći oko toga.
Ako nemaš volje/znanja/vremena ili iz bilo kojeg drugo razloga se ne želiš time baviti, uvijek možeš prodati taj receiver i kupiti drugi (i po mogućnosti isprobati novi prije nego ga kupiš).