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Re: Capacitor
Did you inspect the brushes and the commutators?
http://themotordoctor.com/motor_tuneups.htm
It is like driving on the road real fast then you will not notice all the bumps on the road, but if you drive real slow you will feel all the bumps and holes on the road. The commutators and the brush surfaces may be too rough right now.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Capacitor
@MIPS, thanks.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Capacitor
Commutator is fine, I cleaned it up.
The brushes on the other hand are somewhat unevenly worn in a leading-trailing edge direction and I could have put them back swapping them around I suspect. I will turn each one 180 degrees tomorrow if I get time as it means stripping the entire mixer body again, sigh...
Is it possible to grind/sand the brushes flat again? Asking as it will be some time before I can get new ones.Comment
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A901e Kenwood Chef
I have a Kenwood Chef 901e, We replced the motor brushes as they were worn out and now the chef is turning on at only 1 speed.
I have replcaed the Triac and the .15UF and .1 Uf capacitor but it made no difference at all. Please if anyone has any input it would be much apprecitaed.Comment
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Re: Capacitor
I have a Kenwood Chef 901e, We replced the motor brushes as they were worn out and now the chef is turning on at only 1 speed.
I have replcaed the Triac and the .15UF and .1 Uf capacitor but it made no difference at all. Please if anyone has any input it would be much apprecitaed.Comment
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Re: Capacitor
I have also repaired a chef A901 with motor speed issues. I had already replaced the caps and resistors. I found that there are two screws on the edge of the motor. If you unscrew these slightly and then adjust the pressure on the arm slowly till it regulates the speed. The speed now works correctly from slow to fast. There is a contact which has some feedback to the trigger circuit which maintains the motor speed. the gap is about 1cm/ or 1/2 in but could vary slightly between models. Both gaps have to be the same. Anyone wish to add their twopennuth?Comment
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Re: Capacitor
Further to my post the distance can be varied. By adjusting the screws in and out in line with checking the operation of the speed control will correct any speed issues. As the motor has to be outside of the machine to do this it is advisable to strap it down and take precautions against electric shock. It seems there is a contact which opens and closes which triggers the triac. Old fashioned mechanical means.Comment
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Re: Capacitor
I just want to pop a line here saying thanks for all the info in this thread, it might be old but then so am I and so is the A901e that I'm restoring ;-)
Special thanks to mips for the diagrams, they were really helpful in taking things apart, and will surely be again when i get to putting it all back together.
For anyone needing spare parts that hasn't found them yet, kenwoodchefrestore.co.uk is very helpful and gives a very fast service both for emails and orders.
Having replaced the capacitors, triac and resistor my motor is now running nicely, and I've got the speed control working. As the post from biker48 (above) mentions the 2 screws (with the springs) at the far end of the pcb from the speed control knob do indeed adjust the speed range of the speed control knob. I have a memory of reading somewhere out there that the speed of the motor should be 45rpm, but not sure at what point on the speed control knob it should be this speed. Anyone out there have any wisdom on this?Comment
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Hi people, I hope this is the correct spot to post this, I'm new to the forum.
I have an RTX 3080 Founders Edition which has a burnt up capacitor (it was in parallel with another capacitor which appears damaged too), so I am hoping to be able to identify the capacitor values and order replacements.
I hope these photos make it clear which component I am referring to:
(yes, the soldering is a bit botched from removing the blown one, I know)
I have found the board schematic (attached), but there does not seem to be a boardview available. I have never... -
hello.
the chip has completely blown and i am unable to see the number on the chip. any idea what chip this is?... -
I replaced some capacitor which is located on optical pickup pcb which is shown in the table below(PCB #2).Because it have been out of order.
Now,It works very well,But I just have found that all caps (6svpc100my and other part number as well) ,which is shown in the table below, has ultra-high ripple current spec.
It is not able to obtain any capacitor which can be a substitute for this ultra-high ripple current nichicon capacitor.
So I replaced it with samxon and rubycon's general capacitor(GP,YXA series).
I know that these capacitor will not last as long as nichicon capacitor... -
I desoldered samwha NF capacitor(50v 5.6uf) from PCB circuit of 29inch CRT TV which have symptoms of no display after I heard sound of inrush of current to TV whenever I switch on this television.
I measured ESR value of this non-polarized capacitor(samwha NF capacitor 50v 5.6uf) by means of MESR-100 ESR meter and It displayed 0.3 ohm
And When I measured its capacitance with digital multimeter and LCR-T4 Mega328 meter, It displayed 10uf from DMM and 8uf from LCR-T4 meter.
I found catalogue of samwha capacitor(samwha-catalogue_3.pdf file), which is attached to this thread,... -
When I tried to repair LG 29 inch CRT TV, I found that the ESR value of samyoung SMS capacitor(160v 2.2uf), which is very close to D1879 transistor, is 6 ohm.
Judging from above ESR Meter Table,I think It is necessary to replace this sms capacitor.So I visited local electronics shop,and I purchased 160v 2.2uf rubycon YK capacitor.
But when I browse through rubycon YK datasheet,I found that there is no ripple current rating for 160v 2.2uf specification. But On the contrary, I found 39 mA ripple current rating for 160v 2.2uf SMS capacitor.
Rubycon YK DataSheet (b...
Comment