Braun 5749 Series 5 5040s stopped working. Its locked, how can I fix it

SOURCE: Braun 6520 shaver stops working after one use on batteries

dear sir, i have one like yours,your shaver need to change the battery.

SOURCE: braun 6512 shaver stop working

hi i would say that you have major problem with this did you drop it sounds like a problem with the circuit contact braun or shavers uk kevin.

SOURCE: braun 7526 shaver switch

Managed to fix it - actually was a 7680. Only do this if you:

1. have a small screwdriver set

2. are handy putting little delicate plastic pieces and springs together again

3. are prepared to face the possibility that you might break the shaver entirely

4. you are out of warranty so you don't care if you invalidate it

THE PROBLEM is caused by a small flat metal assembly that acts as a spring to hold the blue button in place. That is held by 4 small glue posts. The glue breaks down, the flat spring falls out of place and the blue button is no long in the right place.

TO OPEN UP THE SHAVER

a. gently remove the plastic cover around the electrical socket underneath, using a small flathead screwdriver to pry it open

b. the two metallic sides of the shaver can be pulled away starting at the bottom of the shaver

c. uncrew the four screws on the underside of the shaver

d. remove cutter block, battery/lcd block (make sure you don't lose the grommet around the lcd display

e. pull the spring and little plastic latch off the underside of the switch, make sure you remember how to put it back (took me almost 20 mins to figure out how to get that back afterwards)

f. slide the switch all the way up and pull it off the slide - you might need a little gentle force and a flathead screwdriver to coax it off - be careful you don't break anything here

g. remove the trimmer from the rest of the switch

h. put the blue piece back in place (mine had fallen out), then glue the flat metal spring back in place. I smeared brush-on crazy glue on the flat surfaces to hold it in place, I would imagine a four drops of reasonably strong glue on each of the glue posts would work best. Wait for the glue to dry and achieve strength.

i. slide the trimmer back into place, then the plastic latch and spring - this is the tricky part. Make sure the switch can slide on/off in all positions properly.

j. put the display/battery & cutter block back in place. put the back of the shaver on, hold the shaver together with your fingers and test the switch works in all positions without jamming. If so put the four screws back, followed by the metallic sides followed by the plastic cover of the electrical socket.

GOOD LUCK!!

Ron_Ray

• 13 Answers
• Posted on Mar 28, 2009

SOURCE: Braun 5520 Shaver Stopped Working

The "Braun 5520" doesn't have the 2 screws under 2 small caps on bottom, as described by so many on these boards.
The round plastic plug receptacle 'itself' is the release. (Twist-Release the outer ring.)
Look on the base, where you plug the AC cord in.... Just inside the rim, you will see two small 'recesses', opposite each other, that allow a wedge tool (like a large screw driver) to turn the rim counter-clockwise (left) 45 degrees, releasing the base and housing.
Once this is unlocked, slide the cover off and pop the black retainer cover off to reveal the "PC Board W/Batteries" module/assembly. (Batteries are NOT replaceable by themselves.)
There is a tiny (and I mean "tiny"!) resistor that burns out in the circuit board and causes the majority of power malfunctions in these models.
You can order a new PC Board (with batteries) for approx. $40.00. (+ S&H)
One place is: "http://www.electricshaverstore.com/get_item_5505631_braun-pc-board-w-batteries.htm".
(Fits Models: 5510, 5515, 5520, 6515, 6520, 6510, 6512 - Types: 5505, 5506, 5705, 5706)


Or, find other by Googling "Braun 5520 Circuit board assembly", and/or replace this model with your number.

SOURCE: I have the same problem with my Braun 7570 as the Jan.8, 2008 writer about the 7526 or 7680 shaver. The blue button came off but the shaver still works

This button wears out or just fails with time, but is replaceable.

Braun 7526 Syncro Body Housing with Trimmer
$12.99, Fits Model: 7526, Type: 5493, Includes back case, front case with trimmer/switch, side grips and bottom 'plug', 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.