So I am diagnosing a problem on an S344 CANISTER. It turns on, the green panel lights go up and down, but the motor never comes on. I opened it up and determined that power is going to the small board astride the motor, but the motor itself never gets power. What is the likelihood A) the control panel is bad B) the motor control board is bad. One or the other I assume. Triacs to be replaced? Who's the Miele wizard here.
MIELE PLATINUM ELECTRONIC PROBLEM
- Thread starter mattinla
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kirboover
Well-known member
I am no Miele wizard, but
usually in vacs with control boards, it is something in the circuit board. Not the panel. I would check capacitors, triacs, and traces.
Best of luck, Avery
usually in vacs with control boards, it is something in the circuit board. Not the panel. I would check capacitors, triacs, and traces.
Best of luck, Avery
vacuumdevil
Well-known member
Generally it's the motor control board. Test the output with the meter and find out what happens.
Miele Platinum Canister continued.....
The motor tests good! Spins up fine when electricity is directly applied to motor windings attached to board but will not spin up even when board is getting electricity and control panel is lit! Is this definitely the board gone bad then?
The motor tests good! Spins up fine when electricity is directly applied to motor windings attached to board but will not spin up even when board is getting electricity and control panel is lit! Is this definitely the board gone bad then?
madman
Well-known member
Triac on the board is probably toasted. Remove the board and inspect for visual signs of a fault.
vacuumdevil
Well-known member
madman
Well-known member
It's probably like one triac. You could do it yourself. I mean, I guess I wouldn't mind doing it if you pay for parts and shipping. It would take only a minute.
Is bypassing an option?
Ok so I’m thinking sort of old school here. Could you just wire things directly feom the switch to the motor and have the unit operate without the control board? Yes you would no longer have speed control but do you really need it anyway? I would think the motor will run at top speed wired direct.
I hate control boards. Expensive and usually problematic. I try to keep my older appliances with no control boards running as I’ve had a few that have control boards and learned my lesson that control boards are often disasterous.
If you end up not repairing it and want a decent high end vacuum with no control boards consider an Aerus Lux Classic model. I don’t believe it has a control board.
Jon
Ok so I’m thinking sort of old school here. Could you just wire things directly feom the switch to the motor and have the unit operate without the control board? Yes you would no longer have speed control but do you really need it anyway? I would think the motor will run at top speed wired direct.
I hate control boards. Expensive and usually problematic. I try to keep my older appliances with no control boards running as I’ve had a few that have control boards and learned my lesson that control boards are often disasterous.
If you end up not repairing it and want a decent high end vacuum with no control boards consider an Aerus Lux Classic model. I don’t believe it has a control board.
Jon
huskyvacs
Well-known member
The circuit board is there for a reason, its to regulate the operating temperature of the motor, motor speed, voltage, all that stuff. There is a reason why Mieles cost so much. It would be like ripping the ECU out of a modern car. They are premium vacuums.
Take the vacuum's circuit board to a computer or electronics repair shop and have them help you replace the parts individually. All you really need is to understand what parts you need, a multimeter, and a soldering gun. You really don't even need to know how they work as long as you have the right ones and copy the new parts the same way the old ones came out. That's how I've repaired a lot of stuff, lol
Vacuum store clerks are not usually computer wizards and A/V geeks, and they run a business, so speaking as a whole for whoever comes in with a fancy vac like that, they do not want to risk their company (or your warranty) on replacing little components one at a time from 3rd party sellers, they will try and get the entire board directly from OEM. Of course OEM will not sell it because they wouldn't make anything off it so they want you to buy the entire motor with it.
Appliance and car mechanics are getting that way too, you buy parts off eBay and expect them to install them for you, they will laugh you out the door and say that they can not do that or will not do it "its against their policy". It's getting to where if you want something fixed anymore, you have to learn it yourself. You would think they would want money and business....but I guess not.
Take the vacuum's circuit board to a computer or electronics repair shop and have them help you replace the parts individually. All you really need is to understand what parts you need, a multimeter, and a soldering gun. You really don't even need to know how they work as long as you have the right ones and copy the new parts the same way the old ones came out. That's how I've repaired a lot of stuff, lol
Vacuum store clerks are not usually computer wizards and A/V geeks, and they run a business, so speaking as a whole for whoever comes in with a fancy vac like that, they do not want to risk their company (or your warranty) on replacing little components one at a time from 3rd party sellers, they will try and get the entire board directly from OEM. Of course OEM will not sell it because they wouldn't make anything off it so they want you to buy the entire motor with it.
Appliance and car mechanics are getting that way too, you buy parts off eBay and expect them to install them for you, they will laugh you out the door and say that they can not do that or will not do it "its against their policy". It's getting to where if you want something fixed anymore, you have to learn it yourself. You would think they would want money and business....but I guess not.
human
Well-known member
Triac = self-destruct device
Manufacturers load their appliances up with circuit boards these days because they don't want them to last too long as it cuts into their bottom line when you don't have to replace the item on a regular basis. They also update the circuit boards' design and make the old ones obsolete and unobtainable fairly quickly to force your hand on replacing the machine. The most insidious part is in re-positioning products as "consumable," manufacturers have successfully conditioned consumers to regard said products' ridiculously short lifespans as "normal". The bottom line is your vacuum's pre-set expiration date has been exceeded and the self-destruct mechanism has thus been activated. Welcome to the age of engineered obsolescence.
Manufacturers load their appliances up with circuit boards these days because they don't want them to last too long as it cuts into their bottom line when you don't have to replace the item on a regular basis. They also update the circuit boards' design and make the old ones obsolete and unobtainable fairly quickly to force your hand on replacing the machine. The most insidious part is in re-positioning products as "consumable," manufacturers have successfully conditioned consumers to regard said products' ridiculously short lifespans as "normal". The bottom line is your vacuum's pre-set expiration date has been exceeded and the self-destruct mechanism has thus been activated. Welcome to the age of engineered obsolescence.
madman
Well-known member
Jo - I don't know, depends on the design. As Husky says, it may be there for the motor's safety. Of course you could bypass it, but the real question is whether you should.
Husky - there are totally legitimate reasons why repair businesses (like mine) refuse to use customer supplied parts. There really is a liability to it, and besides that, if the cheap ebay part breaks, the customer ALWAYS thinks the repairman is at fault, because people (customers) are stupid. So it's a liability to your business's reputation as well.
Also, I find it humorous how some of you believe that a tiny little one-sided pcb with literally just two components is 'complicated.' lol Try fixing any circuit board on a car. Double-sided, even multi-layered boards, with components smaller than a grain of rice - thousands of them! - that can only be repaired with specialist tools, tweezers, and the steady hands and patience of a brain surgeon. Not to mention that the ordinary car computer runs 5 MILLION lines of code.
Husky - there are totally legitimate reasons why repair businesses (like mine) refuse to use customer supplied parts. There really is a liability to it, and besides that, if the cheap ebay part breaks, the customer ALWAYS thinks the repairman is at fault, because people (customers) are stupid. So it's a liability to your business's reputation as well.
Also, I find it humorous how some of you believe that a tiny little one-sided pcb with literally just two components is 'complicated.' lol Try fixing any circuit board on a car. Double-sided, even multi-layered boards, with components smaller than a grain of rice - thousands of them! - that can only be repaired with specialist tools, tweezers, and the steady hands and patience of a brain surgeon. Not to mention that the ordinary car computer runs 5 MILLION lines of code.
