Makita 440 Cap types?

[adamfromayr]

Hi Guys

I have a Makita 440 Vacum and when i was switching it on it wouldnt work but LEDS were on at switch

When i opened it up looked okay

The power is going to the switches okay, i tested the motor direct to 240v it is fine

So the only other bit is this small PCB and im a rookie and cant/wont pay £50 for a new board or $80

So was wanting to replace the capcitators, can anyone please let me know what the small cap types are at the top? and the big long one ive already removed?

So i can buy new caps and replace them,

[petehall347]

Re: Makita 440 Cap types?

that is a resistor .

[petehall347]

Re: Makita 440 Cap types?

did you look at the brushes yet ?

[adamfromayr]

Re: Makita 440 Cap types?

Yes put brand new brushes in the last two looked okay also, thanks for the tip

Does anyone know the type of resistor and small caps at top??

thanks again

[Per Hansson]

Re: Makita 440 Cap types?

All components you call capacitors and have given numbers in the photo in your OP are resistors.

[mariushm]

Re: Makita 440 Cap types?

Like everyone says, those are resistors.

You can grab a multimeter and measure the resistor you broke off.
You can desolder at least one leg of the other resistors and then measure those, or you can just figure out the value using the colors http://www.resistorguide.com/resistor-color-code/

The capacitors are the ones with code starting with C and they look fine from here.

Other points of failure could be that chip on the heatsink (with 3808 on it, which is probably mosfet or transistor or triac or something like that) and maybe that sot-223 chip with code TC1 (temperature compensation? maybe some temperature over-protection?)

[R_J]

Re: Makita 440 Cap types?

The large resistor you cut out is 10W0r047J it is recommended to also check R18 3.9k

[kc8adu]

Re: Makita 440 Cap types?

the yellow cap and r 1 thru 4 are failure prone.
that provides low voltage supply for the controller.
its simply clamped by a zener and filtered by a lytic.

[adamfromayr]

Re: Makita 440 Cap types?

BRILLIANT!!!!!!!!!!!! Thanks for all youe AWESOME TIPS And replys guys, BIG THANK YOU


That has been so so helpful each reply has been very very helpful, the yellow cap prone to blowing and what its for THANKS Kv8adu for that

i seen that yellow cap in a youtube video! Thanks R J for the code for the large resistor i already ordered the yellow caps and wil now order the R18 and 10w0r047j

Okay i will order in new resistors but not sure what those top ones are but i will try the long one and yellow one first

Will update soon to let you and others know x

[adamfromayr]

Re: Makita 440 Cap types?

I cant find anything on google with those codes, is there any alternatives to what resistors i should buy?

Ive already ordered the yellow ones but wanted to try and get new heatsink with 3808

and 10W0r047J and R18 3.9k

[adamfromayr]

Re: Makita 440 Cap types?

http://resistor.cherryjourney.pt/

got the resistor codes just the long one and other ones now

[adamfromayr]

Re: Makita 440 Cap types?

I Spoke to soon

Got the new yellow caps and they too big

anyone know where i can get the other heatsink with 3808

and 10W0r047J and R18 3.9k

[R_J]

Re: Makita 440 Cap types?

It looks like the triac is a BTB16-6008, If the original is bad, remove it from the heatsink and replace it.
Why don't you check the parts and see if they are bad instead of just replacing them?

[adamfromayr]

Re: Makita 440 Cap types?

Im so busy im building a new CNC Machine also, and a new board is £50

Also havent learnt yet how to do that, seen youtube videos but id be better replacing i think as at least then i know what bit were new etc

basically im new to soldering, and never tested a cap or resistor before, not yet

see the big yellow ones too big, not sure how i made that mistake

[adamfromayr]

Re: Makita 440 Cap types?

HI

Think ive all 3 x new codes for parts i need now?

Is this correct guys?

thanks again

[adamfromayr]

Re: Makita 440 Cap types?

i cant find these parts anywhere on google ebay, im in the UK

aN USE An RS Account?

[petehall347]

Re: Makita 440 Cap types?

x2 series .. farnel have them .
http://uk.farnell.com/w/c/passive-co...s?st=x2+series

[petehall347]

Re: Makita 440 Cap types?

resistor looks ok .. test with your meter .

[petehall347]

Re: Makita 440 Cap types?

also try cpc in case there is free shipping ...http://cpc.farnell.com/search?st=MKP3382

[stj]

Re: Makita 440 Cap types?

cpc = free shipping if you spend atleast £5
RS = free shipping on anything.