Laptop 12volt power supply

Sadly, I have had 2 of style referenced in this thread. Both worked fine initially but failed after a couple of hours (laptop only draws about 35W). Am accumulating numerous 'tips' I will never use!

Interestingly, although externally identical, the PCBs/heatsinks within were very different quality, although the circuitry looked very similar. In both cases it was the same transistor on the input side which had failed and one day if I'm bored I might attempt repair.

Currently using one (ebay) which looks more like a regular laptop rectangular PSU, but haven't had it long enough to comment on reliability. If that one fails then I will permanently stick with the NETTO inverter and mains PSU /forums/images/graemlins/cool.gif

Vic
 
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