I think it would be very difficult to find a PA3001, unless you scavenge one out of a old unit. Even then, you would want to know if it was working okay to begin with, as you have experienced already. If you plan on trying a HA11225, try these guys. $1.67 is pretty cheap, $4 post delivery is more. https://www.utsource.net/ic-datashe...m1ED2gjQlpzjzkU8vV3h1Z50u-dP9d-lfoaAgTs8P8HAQ I have heard good and bad, but mostly good.