fixing a treadmill
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by G0RITGood evening I am working on a Reebok oneGT40s treadmill. It had a flashing display which the replacement of D3 rectified. However the lift motor now runs when the mains is turned on and does not stop. If I then select start so the tread motor runs and disconnect the up lead to the lift motor it stops. If I then reconnect the lead the lift motor works as it should with the controls. It will continue to work correctly until the mains is turned off and on again, or the safety device is removed and replaced. It then runs again and only by disconnecting and reconnecting the up lead will it operate...
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by AstonishedHi friends of electronics
What you see in the video and pictures attached is the circuit for charging the batteries of a DC motor.
The problem is that this circuit cannot charge the batteries (3 1800mAH NiMH batteries) any more. When the circuit was OK, its green LEDs lit up one at a time to show that the batteries have charged more. But now that the circuit is flawed, LEDs light up as you see in the video and at the same time successive beeps are heard.
Please help me fix this circuit.
(the datasheet of the IC: https://pdf.datasheet.live/28... -
by juergenbHi,
i am asking for some Help.
I have one of these Nescafe Aeroccino (Milk Frother) things with a bad motor.
The Motor didn´t start anymore and internet is full of users just swapping the motor for a Mabuchi RF-500TB-12560.
So i got a few of these from Banggood.
I swapped the motor and now i have a new fault condition.
In a working Frother you would press the start button, it will light red and work for a few minutes.
If you press longer it will light blue and just mixup the milk.
With the new Motor it just starts... -
by sbt123hi there,im having a look at repairing a wood lathe for my dad,(charnwood w821)the problem is when turning up the variable speed control,the motor starts to stop and start by itself,if i continue to turn up the speed it will trip the mcb in the consumer unit,there is also a slight smell of burning from the speed controll box.,Another strange symptom is the lathe can be unplugged from the mains after switching it off and the motor will spin a couple of times by itself,so far ive put a new speed controll potentiometer on and new motor brushes,ive also tested the motor windings and everything looks...
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by shelby5041hi
i found a nice higher end vision fitness T9700 treadmill..i would like to attempt at repairing it
it seems is dead..i get 0dcv to the top display panel
the motor controller board is where the 115vac is input at and there is a circuit breaker at that location too.
on the motor controller/power supply board there are several led status lights that are all off...according to the serv manual they should all be on to indicate that portion is ok
the 2 fuses on the board are good
the circuit breaker seems to be ok
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