I recently acquired a Guitar combo.
The power amp had been removed. Consequently the power to the preamp
board was also missing.
I have bought a hy2003 to replace the power amp ( with dedicated psu
and transformer.
I have built a 15v power supply + regulator for the preamp.
Unfortunately the only signal that comes through the preamp is
intermitant and seemingly when the input is at its strongest.
Is my 15v transformer too low a current ? (rated at 6VA) or is it
something more serious ? :?: