Another Electra TDC7100B!

[delly82]

Hello all, bit of advise please. Not the same issue as another recent topic ive just read, dryer appears to be working fine. put on a new belt recently.
It will work fine, then at some point on in the cycle, it will make a very loud loud humming/buzzing noise. Motor will strain and move very slowly, then you will hear a click, and it will begin to rotate perfectly in the opposite direction. Also when it does it’s 3 beeps to let me know the cycle has finished, it continues to make the buzzing / humming sound, with drum slowly turning, until i turn the dial to the off position. Im hoping it could be the capacitor connected to the motor that may be failing. But unsure. Any advice welcomed. ill include a link to a vid with the issue.
Thanks again

[video]https://www.youtube.com/shorts/0SsbnOwSIpU[/video]

[electrofix]

that sounds like the reversing relays may have a problem on the board

Dave

[delly82]

Thanks Dave, Are the relays a plug and play job, or would they be soldered to the main board? Had an Indesit before and the board was on the right side of the machine, near the base. Looks like the board on this one is possibly behind the main control panel. Thanks again.

[electrofix]

realys are soldered into the board

to give you an idea what i am thinking although i cant prove it without testing

you have 3 wires going to the motor , one is neutral the other two are energised alternatively to make the motor go clockwise or anticlockwise. The problem you are getting looks like both of these wires are energised at the same time

if the capacitor was at fault i would expect the motor to have trouble starting whereas you motor starts easily when the fault goes

Dave

[delly82]

Makes more sense, aside from the issue, the dryer is doing its job. (for now), just a pain that it doesnt switch itself off. When the cycle finishes, it continues to make that noise, and spin very slowly. Anyway, cheers Dave.

[electrofix]

so the minute you turn it on does the drum try to turn before you push start ?

Dave

[delly82]

Hi Dave, Nope, the dryer works as expected for around 20-30 mins. Open the door, throw laundry in, close the door, turn the dial and push start. works fine.
then as i said makes the weird noise, drum slows to a crawl, i hear a click and it starts to rotate fine in the opposite direction. When the cycle finishes, it beeps 3 times to let me know its finished, but the noise continues and the drum slowly keeps turning.

Dale.

[electrofix]

weird fault but does sound like a board.

very strange it works ok for a while

if it makes this noise for too long there is a real risk of the motor overheating

Dave

[delly82]

Thats why i initially thought it was the capacitor, something along the lines of its on its way out, and it isnt providing enough current to the motor? then it clicks to turn the other way, but is fine. it is a weird one. But as soon as the cycle finishes, I turn it off at the wall anyway. Thanks for the help mate.

Dale.

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