Hello everyone! I haven't been here for a long time ...
In the first lines, Captain Obvious wants to say that a complete analogue of our multicooker is now releasing TEFAL.
Yes, this is a new generation with bluetooth gadgets, but the presence or absence of bluetooth does not affect the taste of the soup and the cooking time of the lamb shoulder.
So search the Internet for the combination of the words "TEFAL Cook4me" - a lot of recipes and videos. Even, KMK, more than in the days of Mulinex.
Secondly, after 4 years of everyday use (buckwheat with cottage cheese in the morning during the working week strongly contributes to the observance of the weight-loss-supporting balance of the BZHU, and on weekends - all sorts of goodies that make it necessary to maintain the weight-loss balance of the BZHU) the encoder began to fail (synonym - the valcoder ; what we spin and what we click "OK"). It looks like this: you twist it, and it reacts inhibited. Skips clicks. Patience (in half a year ...) finally ended, and I disassembled, cleaned, assembled the device. And now everything works "like from a store" again. But, of course, it is advisable not to clean the encoder, but to replace it.The item costs from 120 to 240 rubles (depending on the seller's greed. Digi-Key wholesale price $ 1.28. "One and a half dollars, Karl! One and a half dollars!").
There are no markings on the part, but judging by the appearance, dimensions and internal structure, this part was made by BOURNS, an encoder type PEC12R-4120F-S0012
you can also use PEC12R-3120F-S0012.
If your encoder starts to glitch, it's better to buy / order a new one in advance. While your patience is running out, he will just arrive.
DO NOT ATTEMPT to access the knob through the "face" of our alien - the silver face, the front panel and knob of the knob can be removed ONLY from the inside.
I won't do a photo report [yet], everything is as simple as an orange. Any housewife who has a soldering iron (better for 40 watts), a Phillips screwdriver (No. 1, but No. 2 is also possible), tweezers, cotton swabs, a toothpick and a little acetone can quite cope with this task.
It is believed that the soldering iron is equipped with solder, flux (RMA-223, LTI-120, SKF, crushed rosin dissolved in alcohol, or simply rosin - are listed in descending order of preference). The presence of a braid for soldering parts from printed circuit boards is highly appreciated - this will greatly simplify the removal of the knob for cleaning / replacement. It would be very good to have silicone grease for lubricating moving electrical contacts (you can spray. Well, you lubricate rubber seals on plastic windows with silicone every spring and autumn?), Or technical petroleum jelly (but WD-40 is completely unsuitable! , a cosmetic vaseline with perfume will go ...).
HINT # 1: In the process of disassembly, take a photo (at least on your phone). In case you accidentally pull off a connector (even Nekrasov wrote that housewives in Russian villages are OGO-GO!) - you will know where he came from and where he should be turned.
HINT # 2: Take something like a tray for freezing ice cubes and put the screws removed at different stages of disassembly into the cells of that tray in order from left to right in accordance with the stage - so as not to confuse which screw to screw where during assembly.
HINT # 3: A housewife can always harness the house (or even wild) owner to work, promising something tasty from a repaired multicooker. Flattery, blackmail, and even (especially if the housewife is OGO-GO!) Direct threats are also good.
Disconnect the power cord, remove the condensate receiver, remove the bowl, close the lid.
We spread a towel on the table and put our "alien" on it, bottom to top.
We unscrew and take out a single visible screw; from the side of the screw we pry on and take out the lattice bottom - it is flexible, we just pull it "neatly but firmly" - it will bend itself where it needs to be.
Unscrew and remove the two small screws holding the "trough" with the PCB.
We unscrew the two large screws holding the rubber bushings, take them out together with the bushings.
The "trough" with the printed circuit board can be brought out from under the edge of the case to the middle and up.
There are three connectors on the board, just disconnect the big white one. But it's easier - all three. These are VERY durable connectors (type JST) and, if there was no factory defect during installation, it is simply not realistic to damage them, even if you just pull the wires. And we do not touch the three power wires (blue, red and black) on the other edge of the board, because they do not interfere with anything.
We pull the lower part of the body up a centimeter by one and a half or two. It is convenient to rest your thumbs on the metal bottom, and with the rest of your fingers to pull the edges of the case up.
Now you can remove the silver face and pull out the ribbon cable with a large white connector.
We put the multicooker aside.
Put a silver face on the towel - face down.
We unscrew and take out 7 screws, remove and put aside the panel that they hold.
We take pictures, pull out the cables of the cable from the clips on the case, move the large connector from the board to the side, put the cable aside.
We pull out the small connector in the same side.
Unscrew and remove the three screws holding the controller case.
We remove the plastic case with the controller, passing the cable of wires going down somewhere and the connector into the hole from which they once got out. We put the case with the controller aside.
Gently squeeze out the rubber mounts of the tweeter with tweezers from bottom to top (this is better than pulling from above!). The squeaker hangs on the wires.
Unscrew and remove the two screws holding the knob board.
Gently pull on the board with the knob, pulling the shaft out of the "OK" knob.
YOU DID IT!!! The board with the knob is in your hands.
The face can be handed over to enthusiastic family members for a major wash. While you are soldering, it will just dry up. At the same time, it is advisable to carefully disengage the latches, separate the front panel from the silver case (in this case, the "OK" handle will be released just like that, effortlessly, bonus) and remove the "Cancel" button.
Solder the old knob. The holes in the PCB are large; if you do not spare the flux, the solder will easily collect in the braid and the knob will literally fall out of the board. If anything - search the net for instructions on using the braid ("solder wick how to use").
If there is no new knob, we disassemble and clean the old one:
- With a cotton swab dipped in acetone, wash off the flux from the body and contacts of the knob so as not to stain its insides,
- Gently bend 4 legs holding the lower part;
- Separate the lower part;
- We slightly bend the flexible contacts "down" towards the removed case. We tightly wrap a little cotton wool on a toothpick, moisten it in acetone and wipe the contact arcs on flexible contacts;
- We slightly bend the flexible contacts towards the center (ALWAYS A LITTLE!), So that their contact arcs begin to walk along the not yet worn out radii of the fixed contacts;
- Only if there is a new grease! old grease from the stationary contact plate on the removed housing; change the cotton wool on a toothpick, moisten it in acetone and wipe the stationary contact plate; We wrap a little fresh cotton wool on a toothpick and apply a very thin layer of grease to the fixed contacts.
- Putting the knob as it was.
We solder the knob into the board.
We wash the board with acetone to remove the flux residues.
We collect the "alien" in the reverse order of disassembly. When installing rubber bushings, pay attention - there is a ledge on the plastic; this protrusion should fit into the recess in the bushing.
The reason for the defect: the flexible contacts sawed through the coating of the fixed contacts to the base (if they took it apart, they saw that copper glows in some places). It would be nothing, copper also conducts current, but the sawn-off edges cause "bounce" when the rotary encoder is rotated. Bouncing is multiple short-term contact closings / openings. This is normal; bounce is always present in mechanical contact groups. But only at the edge of the contact, when opening / closing. The controller program is written to suppress (ignore) this bounce. And with wear, bounce occurs constantly, with any movement of the contact. And the controller, ignoring the bounce, also ignores the edge of the contact - that is, it does not perceive the useful signal. In the process of the bulkhead, I (and you, I hope) transferred the contacts to a non-worn area. But sooner or later it will wear out too. So the knob will have to be changed sometime. MECHANICAL WEAR. Simply washing-cleaning-lubricating the factory-installed knob will never work.
No defects, usually manifested in electronic blocks over time (oxidation of tracks, swollen electrolytic capacitors, etc.), were not found in my multicooker. Despite the fact that for 4 and a half years she has been cocked to a delayed morning start almost every evening.