need schematic for Blackstar HT 1B

[fredcapo]

Blackstar HT1B see no filament on tubes, cd input seems to work. Need a schematic thanks.

[soundguruman]

you can follow the filament without a schematic
but make sure the power is unplugged
open it and see if there is a filament fuse
many of the new amps have a filament fuse

between pins 4-5 and 9 on a preamp tube, you will usually see 6.3 volts AC
sometimes the filament is powered by DC on the same pins.

If you are unfamiliar with measuring, have a tech do it for you.

[Jazz P Bass]

I think that the heaters are 12Vdc.

[oc disorder]

Right on JPB!... In the HT 5 the positive 15 volt rail for the I.C.'s is also used to power V1 dual heater/filament .
It's a 1 watt 15 ohm resistor and my guess is, that's what's faulty!