Trying to fix a Dr.Scholl's Foot masager and I need help

Thread Starter

Amir Eghbal

Joined Jan 24, 2015
17
Hi ebveryone, I am pretty new to Electronics and had something to fix from which I wanted to learn a few things. Please help if you can. What I have is called Dr. Scholl's foot masager and it is not heating up. I have made a video and put it on youtube. Please watch and reply. Here is the link:
 

tracecom

Joined Apr 16, 2010
3,944
Hi ebveryone, I am pretty new to Electronics and had something to fix from which I wanted to learn a few things. Please help if you can. What I have is called Dr. Scholl's foot masager and it is not heating up. I have made a video and put it on youtube. Please watch and reply. Here is the link:
Your vid is private.
 

tracecom

Joined Apr 16, 2010
3,944
Someplace there is a heating element that isn't heating. The element may be inside the fan housing, and is probably a simple resistive element; it may even be an actual ceramic resistor. The element itself could be burned out, or there could be a fusible link that has opened up due to excessive current. You need to find the element, disconnect one end of it, and measure the resistance (ohms.) If the element has a fairly low resistance, it's probably okay, but if it's open, then it's burned out. If the element is okay, look for an open fuse or a loose wire to the element.
 

bwilliams60

Joined Nov 18, 2012
1,442
Can you take some clear pictures from a little further away so we can see the whole unit and then close up so we can see the circuitry and part numbers on the circuit board?
 

Thread Starter

Amir Eghbal

Joined Jan 24, 2015
17
Can you take some clear pictures from a little further away so we can see the whole unit and then close up so we can see the circuitry and part numbers on the circuit board?
So, I took some pictures, they are all jpeg, I can't upload it. I tried changing it to Gif. It still doesn't show on here. I am not sure why. Have you had this issue?
 

tracecom

Joined Apr 16, 2010
3,944
The heating element is that nichrome wire stretched back and forth in front of the fan housing opening. I guess that the silver object on the right with 55 printed on it is a thermal fuse, and may be open; check the continuity on it.
 

#12

Joined Nov 30, 2010
18,224
That thing marked AuOna is big enough to be a circuit breaker, a fuse, or a cycling device that responds to heat in that heater cavity. Be sure to check it to see if it is stuck, "open".
 

bertus

Joined Apr 5, 2008
22,278
Hello,

I have resized your images.
Not all have unlimited internet access.
There are still members with dail-up and with sattelite internet that have to pay for the time online.

Bertus
 

Thread Starter

Amir Eghbal

Joined Jan 24, 2015
17
The heating element is that nichrome wire stretched back and forth in front of the fan housing opening. I guess that the silver object on the right with 55 printed on it is a thermal fuse, and may be open; check the continuity on it.
Can I check it when it is on there or does it have to come off?
 

tracecom

Joined Apr 16, 2010
3,944
Can I check it when it is on there or does it have to come off?
You need to isolate one end from the rest of the circuit to measure the resistance, but before you cut anything, you need to know that nichrome wire cannot be soldered, so don't cut it. You may have to move back to the red covered copper wire, and open it; leave enough so that you can solder it back together.
 

#12

Joined Nov 30, 2010
18,224
I disagree with tracecom. The resistance of that silver box should be so close to zero ohms that it will be easy to tell whether it is open. Any other path has to go through the resistance wire which is probably hundreds of ohms, but this kind of judgement comes from experience, which you don't have. If you can't tell the difference between 1 ohm and several hundred ohms on your meter, you will have to disconnect something.
 
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