Razor makes louder noise--cutter drive pin somewhat loose in plastic drive block, Replaced cutter & comb with no change. Cutter seems to oscillate with shorter stroke than before--shaves poorly. Is drive block (assembly) replaceable?
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After dropping the razor it is very difficult to know what the problem is without examining it. Based on the symptoms you describe, I would guess that the the 'drive unit' is damaged. You will find this part available at shaveroutlet.com. See link below. Scroll down the page for installation help video
If you are having the same problem with both your old and new foils and cutters it sounds like there is a problem with the oscillator in the swivel frame. Sometimes the plastic oscillator inside will partially break and it can not vibrate under the load of the foil and cutters.
This swivel frame is part of the 'drive unit' and can be found available at shaveroutlet.com. See link below for item and scroll down the item page for installation video
The symptoms you describe indicate that the 'drive unit' is the problem. This part includes the swivel frame that the foils and cutters fit onto as well as the motor. Sometimes a piece of the plastic oscillator inside will break. The vibration causes the loud noise and it can not oscillate properly because of the break. You will find the part needed at shaveroutlet.com. See link below for this part and scroll down the screen for helpful installation video
8585 shaver gave higher tone and stopped cutting especially after a few days growth, even with new cutter and foil. Cutter wasn't pressing against the foil properly due to a bit of wear on the spring clip holding the cutter pin. Fixed with about 1cm of cigarette paper moistened and rolled into a 1-2mm ball. Stuffed that into cutter pin hole and rammed home with the cutter pin. Take the foil off and wiggle the cutter - if its feels loose, this might help, though the battery might just be getting old.
you are correct. it is not the fan causing your troubles. you have water getting into the fan blade and freezing next to the blade causing the noise. the ice maker is the most common problem. it maybe leaking behind the panels and causing water to form ice then get into the blade and make the noise. shut the i/m off for a few days and see if this stops the noises. if so, then check the fill tube, its a plastic tube from the rear of the unit into the i/m. if it is overflowing and leaking then you might need to adjust the tube so it doesnt leak when filling into the i/m. its somewhat simple but may seem hard. just put some type of a sealant around the tube to prevent water from running out of the tube. if this doesnt fix the problem, then you may have an i/m that needs replaced. but dont do that first. the tube is usually the problem.
The one piece motor drive which also contains the shaver head in the Braun wear out. They can be replaced by yourself or a shaver tech. A good place for parts, http://shaveroutlet.com/.
To disassemble the 7000 Series Braun shaver.
Disassembly of the 7000 Braun shaver is basically the same as the 8000 series Braun shaver listed below. The 7000 is actually easier to disassemble as the plastic is much thicker and the bottom socket cover pops right off as there are less tabs and they are bigger.
To disassemble the 8000 Braun Series shaver.
Remove the plastic cover on the bottom that covers the corded socket. Be careful, there are a total of two tabs on the short sides and four very small tabs on the long sides. I usedmy fingernail to create a space big enough to insert the corner of a credit card in the center of the long side opposite the blue light indicator, then gently removed the cover. Using a screwdriver could damage the plastic.
The two sides then pop off, they only fit on their respective side when replacing. Don't lose the two small black seals on the top of each side piece.
There are a total of four screws holding the body together. Remove the screws, using the proper flat blade or torx screwdriver. The shaver will then split into. You can then remove the the Motor Drive Unit and the separate circuit board with the batteries.
This would also be a good time to clean the goo buildup from around the shaver head.
Assembly is the reverse of above. The Motor Unit will only fit in one way, there is a flat side and a angular side. Be sure the pin for the trimmer is placed in its proper hole, or it won't extend.
I had a similar problem where one of the side covers popped off. I was able to reattach it, by carefully aligning the spring and pushing back into place. If you've lost the pin, you're out of luck. Braun does not make these kinds of parts available for user servicing, unfortunately.
However, the 7000 series models are all compatible with each other in terms of motor, battery, and razor head armature. You could try locating a moderately used example on the cheap (maybe less than $20) and then cannibalize it for the parts you need.
Do NOT send it off to Braun for servicing, as you will be charged much more than the shaver is worth. If it comes to that, you're better off just going with an 8000 series shaver.
Replace the drive unit yourself it is easy
Buy the drive unit $25: http://shaveroutlet.com/braun-other-parts-c-4_27.html
Open the shaver:
1) Use a small flat screw driver pry off the bottom (where the cord plugs in)
2) Remove the silver sides
3) Using a small torq driver remove the 4 scews
4) Open shaver
5) Remove circuit board with batteries
6) Remove and replace drive unit