Last, but (hopefully) best ever modified and complete NAD 3020

[poundy]

So recap finished today. Next I will move on to start the FET mod

 

[poundy]

So I've finished the heat sink. Took a while to get it the way I wanted it, now I can start looking at the mod

So this heat sink isn't going to work. I should have realised, BJT'S are reversed positions for the PNP's, and that puts the gate on the wrong side. So back to the drawing board with this. May even make one from scratch

 

[poundy]

so having scrapped the previous heatsink idea(and attaching with the heat pads,Ive made the basic shape now and dry fitted the FETS
Doing it this way verticaly, it gives me much more on the board to play with for the mod

 

[Mooly]

your metal working skills are much better than mine.

 

[poundy]

Must admit I'm quite pleased but not finished yet I only used a vice to bend the sheet river

 

[Mooly]

Well it looks good to me

 

[poundy]

I don't think this looks too bad,and I now have the feet attached so I can secure to the board and ground it

 

[Mooly]

Your metalwork looks very neat.

 

[poundy]

Cheers ,do you think it will be substantial enough?

 

[Mooly]

It looks as substantial as the original (as much metal to dissipate the heat) and it is vertical and so yes, its probably as good as the original if not better.