Repairing a DC Electronic Load Battery Tester

See my upgrade with a permanent fix! Here:
   • How to turn a cheap DC Load into a high po...  

These are the models you find on eBay, Amazon, Aliexpress, etc.
Known as the DL24, DL24A, DL150, DL150B, DTL150, ATORCH, MakerHawk or no model name at all!
Usually advertised as a DC Electronic Load or Battery Tester.

This one is supposed to handle 200V, 20A, up to 180W. But I let the smoke out far below that!
Watch to see a diagnosis of the failure, replacing a big MOSFET, jumping over traces, and testing the modifications.

Electronic Loads:

180W, with dual vertical fans, IRFP260, as shown in my video:
https://amzn.to/4ddPSxE
https://amzn.to/4dhwMqj

150W, single horizontal fan, IRFP264, but otherwise identical to the one above:
https://amzn.to/4a1keAD

180W, Atorch DL24 or DL24P style with single horizontal fan, likely IRPF264 or Y140NS10 but I haven't taken one apart, 4 button interface, color screen:
https://amzn.to/4aUujQR
Nice review:    • Full review of DL24P Battery Capacity Test...  

IRFP260 (original) at DigiKey: https://www.digikey.com/short/5md117rw
IRFP260N (used in video) at Amazon: https://amzn.to/4aIlFoy
Some say the 'N'ew generation is not as robust as the original, even though it has higher specs.

Thermal paste: https://amzn.to/3U4ROzq

PANAVISE PCB Holder:
https://amzn.to/3WzDyAS

Flexible High Temp Silicone Wire 10/12/14/16/18 Gauge:
https://amzn.to/4hh7Y3q

Amass XT90 Connectors:
https://amzn.to/4gbghfG