This isn’t a computer question, but I don’t know a better place to ask it.
I have an RCA wireless stereo speaker set, about 15 years old (pre Bluetooth).
The transmitter has a 4-position slide switch to select channel 1, 2, or 3, or
power off. It seems to make poor connections on all three channels. When
I jiggle the slider slightly, the signals to both speakers go in and out. Mostly
out. The switch is soldered to a PC board in ten places. I tried to solder a
single wire to a board once and the trace lifted away from the board. I don’t
think I can handle that job. Is it possible to clean such a switch? Might I
be able to find a replacement for just the transmitter? Or something??
— Jeff, in Minneapolis
A tip for replacing moderately sizable components is to get a desoldering bulb or wick to help with removing most of the solder so you do not have to use excess heat trying to melt it all at the same time. Make sure you allow it to cool well before fitting new one and soldering. IF you have any trouble with the solder flowing properly on resoldering, you may use a tiny bit of ‘Safe Flux’ to help the solder properly flow onto the surfaces. Safe or not, you will need to clean the excess flux off first with damp Q-Tips then with rubbing alcohol. AND use a small tip iron made for electronics.
You have to be a little bit crazy to keep you from going insane.