http://www.youtube.com/watch?v=YjvzU3DFBL8
Here is video... I have replace an6680, an6675 and crystal, but same problem again
Please help 🙁
Here is video... I have replace an6680, an6675 and crystal, but same problem again
Please help 🙁
hi
i have had this problem with that model, inttermitant speed and speed suddenly increasing.
Around the motor there is a sensor /servo coil, this is a printed flexible circuit board coil that terminates in 2 vertical pins/wires soldered to the main board, at the point where the wires attach the circuit becomes broken. you will have to take out the main board to inspect this part and then it is not ovious. on one occasion the part measures ok but when assemled was causing problems, (crack in the coil).
the good news is that this part is availible as a spare from technics.
also do a search on this forum for this model for more info
i have had this problem with that model, inttermitant speed and speed suddenly increasing.
Around the motor there is a sensor /servo coil, this is a printed flexible circuit board coil that terminates in 2 vertical pins/wires soldered to the main board, at the point where the wires attach the circuit becomes broken. you will have to take out the main board to inspect this part and then it is not ovious. on one occasion the part measures ok but when assemled was causing problems, (crack in the coil).
the good news is that this part is availible as a spare from technics.
also do a search on this forum for this model for more info
hi there,
the part is described as FG coil assembly, number is SFM2172-01A
the service manual can be had at vinylengine.com
the pages are 12 and 13. drawing reference 7.
i would recommend that this work be done by a experienced technician, this part is very delicate when soldering, there is quite a bit of dismantling required and there is also mains is present on the pcb.
good luck
the part is described as FG coil assembly, number is SFM2172-01A
the service manual can be had at vinylengine.com
the pages are 12 and 13. drawing reference 7.
i would recommend that this work be done by a experienced technician, this part is very delicate when soldering, there is quite a bit of dismantling required and there is also mains is present on the pcb.
good luck
You will want a full service manual for good troubleshooting and I don't see it at vinylengine.
I have a paper copy and I'll see what I can do.
Meanwhile, check the board for bad solderings, especially around transistor Q201.
I have a paper copy and I'll see what I can do.
Meanwhile, check the board for bad solderings, especially around transistor Q201.
Alright, are you equipped with adequate service tools like a good DMM and a scope?
I ask because the troubleshooting needs at least these instruments.
/Hugo
I ask because the troubleshooting needs at least these instruments.
/Hugo
tnx 🙂 all IC was changed and tested before, everything is ok with them. i have put them on another mk2, and they are working without any problems :S
if i unplug the pitch, the behavior is still same. i have changed the motor, behavior is still same.
but the motor from defected technics starts a little bit slower in a good technics. i think it is little bit burned up
but the motor from defected technics starts a little bit slower in a good technics. i think it is little bit burned up
No, I think the bearing needs some oil.
If you have a good working unit, why don't you try changing the complete PCB and see what you get?
(I unsolder the pins where the transformer wires are attached.)
If you have a good working unit, why don't you try changing the complete PCB and see what you get?
(I unsolder the pins where the transformer wires are attached.)
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