A500 died.

[arttu80]

Does your GVP HD8+  use its own power supply? If not, there's little chance that old commodore cheapskate supply will provide enough amps for that. Anyway, put that old brick aside and make yourself a favor and make PSU of PC ATX supply. It will provide good service for years to come.

Use this source for your coversion;

http://www.ianstedman.co.uk/Amiga/amiga_hacks/Amiga_Power_supplies/amiga_power_supplies.html

Just my 'two cents' on subject. Good luck!