Mk 118

Hello

My son and I just just made the mk118 radio and we are having a few problems. The red light turns on but there is no sound. I did instill the IC1 backwards and I fixed it but it still no sound. This is our first soldering project. It is for a science project and I appreciate any help.

Thank you.

If an IC has been put in backwards, most likely it has been destroyed.
Furthermore, this could just be anything. Most likely an assembly mistake and/or poor soldering.
If you can provide LINKS to HI-RES and SHARP pics of both SOLDER and COMPONENT side of your kit, we can take a look at your assembly.