Sound Problem Camera Has No Sound In Play Back Mode. The Volume Control Has No Effect.

Also how do I reconnect the fan?
It sounds like you may have a broken potentiometer (aka volume knob) for the master volume control. If that is the case, you would need to replace it with a new one (or take it to an electronics technician to diagnose and repair).
Regarding the fan disconnection, this likely isn't causing your issue but you would still want to reconnect it as it keeps your amplifier cool while in use. Reconnecting is fairly straightforward - all fans have 2 or 3 wires that connect to corresponding terminals on the amp. Just make sure you don't mix up which wire is positive and negative, and make sure they are connected firmly and securely.

If you have plugged the input to the LFE socket the volume control may not have any effect coz' its ment to be controlled by the AV receiver in this mode. Connect to the L/R scoket ( any one will do ).

there is generally no sound on the video part of the digital camera. you have to upload it and play it on the computer to get the sound.

The problem you are describing is a problem with one of the chips in the camera that controls image processing. It seems to have failed and needs to be replaced.

Olympus will charge a flat rate repair fee for this product. The cost is $105 plus your local sales tax. This covers parts and labor, factory cleaning and diagnostic check, 6 month warranty and the cost of shipping the product back to you is all included in that price.

I hope this doesnt come across condencending as you're used to cameras, but to clarify, the monitor volume on the camera is up yes? Both the volume control and the monitor volume - both in camera?

Did you set up the camera to capture sound? This Camera has a Functions menu which is deep as the ocean, and standard movie capture does not also pick up sound. Additionally, if playing the movie back over an external device, use the A/V cable not USB, and get a High Capacity SD/MMC memory card if you want more than a few moments of video with sound. I would finally recommend an audio input device, as even when in Movie sound capture mode, the volume is never very loud.
Read the advanced manual completely.

Try to look for the sound icon in your task bar. select properties then try to check options then select all settings that are supposedly running in your system uncheck those settings that are set to mute then adjust the volume lever to higher level.ex. Right Click sound icon,-open volume control, When volume controls appear click on the properties,-then select all settings that you might be using then close the volume control panel. then try to run again. if possible it needs restart to take effect the new settings.

Some cameras you CANNOT play back on the camera, but it only works on the computer. Nothing is wrong, because that camera is basic. So yeah.

check if the digital compression option is off.turning it on should make the sound equal.also might want to check your volume setting on the main menu when you turn it on.only problem is you need the remote.hope this helps in some way.

sound or volume can be lowered or turned off using zoom control button