C104 is the most common audio failure seen in the TS-450s and TS-690s model. If you have an audio issue, always check that cap first. Most of these radios are now at the age where all capacitors should be checked and replaced as needed. Also take a very good look at the memory battery on the back of the faceplate, if they leak they can cause a lot of damage. They're not too particularly hard to replace either.

@petermiles6557

6 ай бұрын

Thanks, good advice.

Great work peter, thanks for sharing.

Hello, I bought this radio recently on eBay, everything works, but there is no sound at all, it's deaf as hell, I'm devastated, I don't know what to do, or maybe I don't know how to turn something on?

wonderful. I am sure I can fix it myself. I was scared to try but now I'm sure ill be OK. thanks

@petermiles6557

Жыл бұрын

Good luck Fred, keen to hear how you go.

Thanks for the great video! Saved my butt (and a lot of $$$$).

@stevegooch2356

Жыл бұрын

Follow up question: C104 fixed the audio coming out of the speaker, BUT the ACC2 (pin 3) and DSP3 (for digital mode into sound card) audio is almost non-existent. Can you point me to where the fault might be for that?

Thanks Peter ...I think I will tackle mine now.! KD0TKX

I have the same issue where the cap was changed but the tracks to and from have perished. I see that one side of the cap goes to the resistor (track on underside of board) but the other side was tracked to in between the 2 black filters. Any idea where I can "wire" the cap legs to on the underside of the board to get the cap back into the circuit? ? The tracks are gone!

I'm having the exact issue. I'm comfortable with soldering but haven't done this kind of repair before. Any suggestions on sourcing capacitors, or does it matter as long as they are the correct value and type? I would probably need to get a solder sucker and a jig as well. I have a solder wick but a sucker seems much cleaner and precise.

thanks for sharing, but you owe it to yourself to get a better solder sucker.