John Marles is a very savvy, honest individual. No, those power supplies are not supposed to "max out" hour after hour.
This is why I investigated, and found the top three weak points in the Megawatt, experimented, and deduced the three answers to reduce failure rate at over-max loading.
I have had one of my modified 36-amp (400 watt) Megawatts producing maximum amperage for eleven days straight. With an ambient temperature in excess of 90F.
The few mods I did renders the Megawatt near bulletproof.
Get a wire grill screen guard for the original fan.
Cut the segments out of the aluminum case cutout leaving a large hole
Attach the wire fan guard. An immense increase in air flow
Put small legs under the Megawatt case. Otherwise most of the air inlet is blocked if sitting flat.
Replace 2 largest capacitors with Panasonic low ESR 105c 680uf 200 volt units, the replacements are slightly smaller.
Replace 2 schottky rectifiers (30 HSQ 100) with EIGHTY AMPERE, 150 volt rectifiers. Both grades of rectifier are identical physically.
