Pop Crackle & Bang

[tansis]

Today is a sad day
for today my faithfull Hi-fi amp has ceased to function,
seven years it has filled the air with joy and kept my
mug of tea warm since being rescued from the rubbish
bin outside a TV shop.

Time and prolonged thermal stress has finally caught up
with the NAD 3140 , but being a bit of an animal the old girl
went out in style and managed to trash a 15" bass cone :lol:
before vapourising trackwork and exploding two electrolytics.

Now rather than rebuild the original mess , I have decided to
go with a new circuit and re-use the case as it saves hassle with the twenty something phono sockets and other various connectors that inhabit
the rear plate, plus the power supply is still good and the transformers are of the shielded variety. Rectified and smoothed these each produce 48vdc fused at 3.15 amps.

Any suggestions for amplifier IC's to look at would be most welcome.
Was toying with the idea of a TDA 2052 for ease of construction or similar lower power device operating in a bridged mode.

[60 watts is not crucial but it is good to have in reserve]

 

[Sebi]

LM4780 from National is a good choice.

 

[Nigel Goodwin]

I would suggest repairing the NAD would be a better option, certainly replacing the NAD's power amplifiers (which is a fairly well respected quality amplifier!) with some cheap and nasty IC amps is sacrilege!.

 

[Exo]

Yeah, try to repair it, don't let a few molten pcb tracks stop you...
I once replaced over 100 pcb tracks with wires in a lightning-struck television... Don't laugh - It worked (after replacing some other components asswell)