UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - DIY18V DC power supply for Hacker Sovereign II

Jolly 7 · 23rd Oct 2019, 8:54 am

Thanks Mike. I have no hum on FM, MW and LW using my circuit. I also ran the radio from another DIY power supply using an LM317 and there is no hum either. I have seen pictures of the VP408 but am not sure what might be causing the hum. If it is difficult to repair, making a supply similar to mine is inexpensive and easy. The main expense would be the transformer and housing, unless you are able to use your existing one. In addition to the Philips transformer and housing, I used a PCB from an old surge protector and the DC cord with the correct plug cut off an old wall wart.

23rd Oct 2019, 8:54 am	#3
Jolly 7 Octode Join Date: Feb 2018 Location: Southampton, Hampshire, UK. Posts: 1,061	Re: DIY18V DC power supply for Hacker Sovereign II Thanks Mike. I have no hum on FM, MW and LW using my circuit. I also ran the radio from another DIY power supply using an LM317 and there is no hum either. I have seen pictures of the VP408 but am not sure what might be causing the hum. If it is difficult to repair, making a supply similar to mine is inexpensive and easy. The main expense would be the transformer and housing, unless you are able to use your existing one. In addition to the Philips transformer and housing, I used a PCB from an old surge protector and the DC cord with the correct plug cut off an old wall wart.