I have a rogers majestic that has a "fuse lamp" 6.3v at 250 mili amps that is in line with the "c" voltage. It has been bypassed in the radio. The schematic calls for two 4 1/2 volt batteries in series. I think that is why my volume was low. If the fuse lamp is bypassed, is the radio is getting more voltage than needed? I was giving it 9 volts, but if the fuse lamp drops 6.3, and is bypassed, should corrected voltage be 2.7?

The lamp is only dropping 6 volts if it glows. Your C circuit, assuming it's for grid bias, shouldn't pull any current at all, so the lamp will have zero volts drop.

The lamp is only dropping 6 volts if it glows. Your C circuit, assuming it's for grid bias, shouldn't pull any current at all, so the lamp will have zero volts drop.

:The lamp is only dropping 6 volts if it glows. Your C circuit, assuming it's for grid bias, shouldn't pull any current at all, so the lamp will have zero volts drop.
So if the lamp doesnt glow and its just a fuse, then why does the volume not go very high. Somebody bypassed the lamp, so why would they do that unless maybe they didnt have a replacement lamp. The schematic shows 9 volts c voltage. I'm giving it 2.7 volts, and the volume is loud enough. Should I unsolder the lamp wire bypassing it and screw in a lamp in the socket(wasnt one in the socket when I got the radio)