Can’t find a 0.35 ohm 5% resistor anywhere

[ZedsDeadd]

Where do I find one or can I get one made?

 

[bertus]

Hello,

Have a look here:
https://au.mouser.com/ProductDetail/Vishay-Dale/CPCC05R3500JE31?qs=nHuOPoDtCcQIEwh96rLy6Q==

Bertus

 

[ZedsDeadd]

Hello,

Have a look here:
https://au.mouser.com/ProductDetail/Vishay-Dale/CPCC05R3500JE31?qs=nHuOPoDtCcQIEwh96rLy6Q==

Bertus

Sorry I don’t mention I think it’s a thin film resistor with the colour bands

 

[bertus]

Hello,

0.35 Ohms is not a standard value.
0.348 will be the closest, but with 5% tollerance, a wider change may apply:

Bertus

 

[ZedsDeadd]

Hello,

0.35 Ohms is not a standard value.
0.348 will be the closest, but with 5% tollerance, a wider change may apply:
View attachment 52164
Bertus

Here’s a picture of the resistor right in the middle

 

[bertus]

Hello,

Why do you think the resistor is faulty?
It looks quite ok to me.
Did you measure the resistor?

Bertus

 

[ZedsDeadd]

Hello,

Why do you think the resistor is faulty?
It looks quite ok to me.
Did you measure the resistor?

Bertus

That’s a screenshot of the same board as mine mine is blown

 

[ZedsDeadd]

That’s a screenshot of the same board as mine mine is blown

 

[bertus]

Hello,

According to the table I posted, it could be a 0.36 ohms resistor.
That should be more easy to find.

Bertus

 

[bertus]

Hello,

What is the size of the resistor?
That could determine the power of the resistor.
https://au.mouser.com/Passive-Components/Resistors/_/N-5g9n?P=1z0vidtZ1z0x6frZ1z0z819
You might also want to have a look WHY the resitor burned.
There can be an other part faulty that will have caused the resistor to burn.

Bertus

 

[ZedsDeadd]

Hello,

What is the size of the resistor?
That could determine the power of the resistor.
https://au.mouser.com/Passive-Components/Resistors/_/N-5g9n?P=1z0vidtZ1z0x6frZ1z0z819
You might also want to have a look WHY the resitor burned.
There can be an other part faulty that will have caused the resistor to burn.

Bertus

it’s about 10mm x 3mm which is a guess I don’t have anything to measure it by. It’s just smaller than a USB port

 

[ZedsDeadd]

.36 would mean the second band is blue but It definitely looks green

 

[bertus]

Hello,

A 2 Watt resistor would be about 9 X 3.5 mm.

Bertus

 

[73's de Edd]

You might also want to have a look (at) WHY the resi s tor burned.

Refer to post 7's photo of HIS board and then . . . . .
Look at the nearby . . . fractured outward . . . . case of a POWER FET and expect this burnt open part to be its source resistor, with the POWER FET being dead shorted internally.

 

[bertus]

Hello,

@73's de Edd , Yes, you are right, the transistor shows severe damage.
@ZedsDeadd , Can you take a picture from the front of the transistor?
It will need to be replaced.

Bertus

 

[davenn]

Here’s a picture of the resistor right in the middle

.36 would mean the second band is blue but It definitely looks green

3 is orange the resistor in the photo the first band looks brown = 1 and a 0.15 Ohm would be a standard value

.15, 1.5,15,150, etc

 

[ZedsDeadd]

1- screenshot of the same resistor that I found on google images

2- my blown resistor

3- transistor

 

[Bluejets]

I make it 0.15 ohm 5%.

 

[73's de Edd]

Sir ZedsDeadd . . . . .

All right now . . . . with R802's value being nailed down EXACTLY.

And since you could / did not come back with . . . the . . .or any . . .part numbering on the fractured power FET . . .don't you now think that it is due time that you should reveal this circuit boards numbering identifier, as well as its brand of manufacture and the sets model number.

The most to be seen from the snippet view of this board, is that it relates to a power supply board, with its related / assigned 800 series of device numbers.
The subject R802 resistor should be in the POWER FET source to ground and be having a current sense sampling voltage being fed back to the PWM controller.
BUT the instant that the junction on the POWER FET failed, it DUMPED the whole ~340VDC at 100'ish milliamperes (that's being ~34W . . .babycakes ! ) from the raw DC supply, right into this puny little 2W resistor.
So, you can now see the resultant double ended sparking /blasting out of that resistor, and expect that the now fused together FET D-G-S junction blob has ALSO sent a HEALTHY / 340V destructive voltage back down the gate feed path into the FET's controller IC.

This boards use of a Cy prefix for HV ceramic caps, relates to a similar assignment used by Samsungs.

Is this being your first attempt of repairing a board . . . instead of just your mass pulling of donor boards . . . . . ?

https://shortcircuitsolution.com/pages/about-us

https://www.google.com/maps/place/S...3b87c!8m2!3d35.0608551!4d-90.0004258?hl=en-US



73's de Edd . . . . . .

 

[VenomBallistics]

Mother of Zeus child ... you might want to wipe the isotopes off that capacitor before you replace things too.
Looks like a scene of Saving Private Ryan was filmed in there.