Identify Resistor?

T

Tarquin1985

Hello, the attached images of a resistor are from an Amercan appliance. I'm trying to identify the exact resistor if someone could help me please?

Next to it on the circuit board is written R1, I believe this equates to 1K?

As you can see the resistor has burnt out and therefore the colours are difficult to distinguish.

Many thanks

P. S. Username: BANALLSHEDS, please to do not comment unless you have something constructive to contribute.

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R1 is just a reference. i.e. Resistor number 1.

Actually it doesn't look particularly overheated - just old. Have you measured its value?
 
I've not measured its value but it had burnt through the plastic which encased the wires and was hot enough to cause a mark against the metal lamp casing - the images probably don't reflect it in true colours but when you feel and see it up close you can tell it has been very hot.

I don't have any tools for measuring its value, my knowledge is quite limited and doesn't go much beyond removing and replacing.
 
Lots of people have multimeters. Find one of your acquaintances who has and measure it. It may save you a lot of trouble. It may still be ok and the fault may lie elsewhere.
 
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I've attached an image below, you can see on the circuit board where it was by the burn mark and the metal casing by the change of colour.

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My guess is you have connected something designed to work on 120V to a 230V supply.
 
Do you think that's then overloaded the resistor?

With it being American, the bulbs are difficult to find and my wife tried a bulb which is similar but not the exact type and that's when we smelt the burning.
 
Any idea which resistor I need to purchase to replace it?

I'll look into and check that we're not supplying it with the incorrect voltage.
 
The resistor has failed because too much current passed through it. That was caused by something else.
Just replacing the resistor will not fix the problem, a new one will overheat and burn in exactly the same way.
 
The bulb would not have caused this would it as it's just another resistor and after the resistor which burnt out?

Are American mains120V as appose to our 230V? I take it this is the likely cause?

If so, how can I reduce the volts?

Sorry if I sound like a novice, I'm not even qualified to that level.
 
Reducing the volts would cost way more than a new light fitting. I guess there must be something special for you about the fitting, but it probably isn't worth it. Yes, USA uses 120V 60Hz, we use 230V nominal, 50Hz.
 
As has been said, you have probably applied 230 V to an American device intended to operate on 120 V.
For information on resistor colour codes see https://www.digikey.com.au/en/resou...version-calculator-resistor-color-code-4-band
It looks as though the 4 colour bands are Brown, Black, Brown(?) and Black
This indicates 1,0 and 1 zero ( i.e. 100 ohms, which is reasonable for a circuit of this nature.)

However, the last (Black) band indicates a tolerance and I do not know that Black is a recognized tolerance indicator.
 
Yeah, just checked what it's worth. I thought the item was worth more but I think the best place for it is in the bin.
 
D

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