I have lost my instruction and cleaning manual for Braun electric shaver #7680 and need to find replacement.

A drop of Braun oil should be applied to each of the foils. You will find the oil at shaveroutlet.com. See link below

http://shaveroutlet.com/shaver-accessories/braun-shaver-oil-p-465.html

Most likely, the oscillator in the drive unit is broken. You will find this part for model 7680 at shaversource.com. See link below for product and helpful disassembly video

http://shaversource.com/shaver-replacement-parts/braun-7000-series-syncro-motor-drive-unit-p-110.html

You will find a video at shaveroutlet.com. See link below and scroll down for video

http://shaveroutlet.com/shaver-replacement-parts/braun-7000-series-syncro-foil-and-cutter-p-141.html

7680 shaver wount turn off.

If the shaver is completely dead and the charging lights no longer illuminate when plugged in, the circuit board will need changed. If they still illuminate when plugged in, you can just change the batteries.

You will find the batteries and also the circuit board with batteries at shaveroutlet.com. You can order which you require. See links below

http://shaveroutlet.com/shaver-replacement-parts/shaver-replacement-battery-aa-nimh-p-108.html

http://shaveroutlet.com/shaver-replacement-parts/braun-syncro-circuit-board-with-batteries-select-models-p-772.html

There is a tip on the battery page for easier installation

shaveroutlet.com has an instructional video that shows you how to disassemble the shaver at the link below. It's the 4th video down

http://shaveroutlet.com/video_tutorials

The switch is part of the outer case and can be found at shaveroutlet.com. See link below

http://shaveroutlet.com/shaver-replacement-parts/braun-syncro-body-housing-select-models-p-811.html

To replace, you will need to gently pry off the cap that surrounds the cord hle on the bottom. Once removed, the side grips will pull away easily revealing 4 screws on the back. Remove screws to take the bask of case off and then lift out the 'guts'. Reassemble in reverse order

You will find the oil at shaveroutlet.com.  Seelink below

 

http://shaveroutlet.com/shaver-accessories/braun/braun-shaver-oil-p-465.html

 

Oil is applied to the foils.  About a drop per week

 

 

you will find helpful information on the item page for this item at shaveroutlet.com. see link below

http://shaveroutlet.com/braun-7000-series-syncro-clean-charge-base-replacement-part-p-118.html

I followed the instructions from Nick123456 for taking the shaver apart, cleaned all areas and oiled everywhere I could see moving parts around the motor. Then I put it back together making sure that the side screws were very tight. It is now much quieter and the shave seems OK but not brilliant. (Sorry about the typos in the original posting).

the red light tells you it is cleaning, a green flashing light tells you it's charging