- Joined
- May 3, 2020
- Messages
- 229
that's a buffer, I think, with tri-state outputs. It's an obvious thing to blow and probably nothing else it is damaged. Did you short an output or something?
First, rotate the picture! Then purchase a replacement on Digikey. That is the McMaster of the electronics world. Mouser is also good. The chip is a 74125 chip. SN means Texas Instruments, I think, and the ACHT is sort of a speed and current rating. So get the same chip if you can. Digikey is a bit industrial but you'll be able to find it. Check the package before you buy. You might consider buying a DIP socket, if this problem is likely to happen again.
I recommend this de-soldering tool. Add a little solder to the joint and suck it before the flux is used up. www.amazon.com/gp/product/B0932TJX9X After you can see the solder is removed from each pin, you're allowed a tiny amount of prying. If you come in too hot, you might pull a trace off the board, which makes everything harder.
First, rotate the picture! Then purchase a replacement on Digikey. That is the McMaster of the electronics world. Mouser is also good. The chip is a 74125 chip. SN means Texas Instruments, I think, and the ACHT is sort of a speed and current rating. So get the same chip if you can. Digikey is a bit industrial but you'll be able to find it. Check the package before you buy. You might consider buying a DIP socket, if this problem is likely to happen again.
I recommend this de-soldering tool. Add a little solder to the joint and suck it before the flux is used up. www.amazon.com/gp/product/B0932TJX9X After you can see the solder is removed from each pin, you're allowed a tiny amount of prying. If you come in too hot, you might pull a trace off the board, which makes everything harder.