Replacing Chip in watson 10-am PSU

[Sel]

I while back I bought second hand Watson PSU and it's been fine until Yesterday.
When I first turned it on with nothing connected to terminals it came on with a loud click but seemed to work fine.
I used it for an hour or two  only a few seconds at a time with very low load and no shorts.

Later when I tried to run a small motor there was a little crackle and smoke came out of the psu.
Opened it up and noticed that the NEC C324C chip was sparking if I pushed on one of the legs. It is burnt at the chip not a dry joint to the board.
Now the PSU still work but I have no voltage control it's stuck at max 20volts (rec 13.5)  but reads zero on the meter, the  Amps read as normal 0-20.

There's no other obvious fault, when checking the NEC C324C chip online it tells me it's a Quad op Amp.
Do I have to replace it with an exact match or could I use a  LM324 DIP-14 as these are a little cheaper and easier to get?

Any help please.


 

[Samogon]

Cheaper than 40 cents? Shipment would be 3-5$

[wraper]

There is no need to get particularly uPC324 and you can use LM324 as uPC324 is just a yet another flavor of LM324. It does not have LM letters as most other 324 only because NEC used uPC for their analog ICs and uPD for digital.

[Sel]

Excellent thanks for the information, I just wasn't sure.