The Radio Information Board

Hey Guys,

Can anyone confirm what size fuses are supposed to be used for the TK-790H?? I have the main power leads fused at 30A and the ignition sense fused at 3A (it's what came w/ the unit). The unit however keeps blowing the internal fuse which I believe is 1.8A?? Can anyone maybe give me some insight as to why this may be happening and how I can prevent it??

I had a customer who jump starts other vehicles and blows that fuse. Also have had the .5 Amp one blown. I had to substitute the 1.8 to a 2 Amp fuse. Luckily, the blown fuse was the only problem in the radio.